No. S1802 TECHNICAL Page 1 of 56 SPECIFICATION ANSI C39.1 Requirements for Electrical Analog...

TECHNICAL SPECIFICATION

No. SS1802

Page 1 of 56

REV 6 DATE: 07/6/15

CATEGORY CIRCUIT BREAKERS / SWITCHGEAR

SUBJECT HIGH VOLTAGE CIRCUIT BREAKERS (230kV, 115kV & 69kV)

APPROVED BY

Author Date

Principal Engineer-Substation Date

Substation Standards Committee Date

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HIGH VOLTAGE CIRCUIT BREAKERS

(230kV, 115kV & 69kV)

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TABLE OF CONTENTS

1. SCOPE ............................................................................................................................................................. 3

2. BID SUBMITTALS ............................................................................................................................................. 3

3. REFERENCED STANDARDS AND CODES ........................................................................................................... 4

4. DEFINITIONS ................................................................................................................................................... 7

5. SERVICE CONDITIONS ..................................................................................................................................... 7

6. SEISMIC QUALIFICATION REQUIREMENTS ...................................................................................................... 9

7. TECHNICAL REQUIREMENTS .......................................................................................................................... 10

8. TESTING ........................................................................................................................................................ 25

9. INSPECTIONS AND HOLD POINTS .................................................................................................................. 29

10. TECHNICAL DOCUMENTATION TO BE SUBMITTED WITH BID ........................................................................ 30

11. DRAWINGS AND DOCUMENTS ...................................................................................................................... 31

12. SHIPPING AND PACKAGING .......................................................................................................................... 37

13. MANUFACTURER’S REPRESENTATIVE TECHNICAL SUPPORT /TRAINING ....................................................... 39

14. WARRANTY ................................................................................................................................................... 39

15. QUALITY ASSURANCE ................................................................................................................................... 40

APPENDIX A - 245 KV HIGH VOLTAGE 2000A CIRCUIT BREAKER PERFORMANCE REQUIREMENT DATA SHEET .......... 42

APPENDIX B - 245 KV HIGH VOLTAGE 3000A CIRCUIT BREAKER PERFORMANCE REQUIREMENT DATA SHEET .......... 43

APPENDIX C - 123 KV HIGH VOLTAGE 2000A CIRCUIT BREAKER PERFORMANCE REQUIREMENT DATA SHEET .......... 44

APPENDIX D - 72.5 KV HIGH VOLTAGE 2000A CIRCUIT BREAKER PERFORMANCE REQUIREMENT DATA SHEET ......... 45

ATTACHMENT 1 - CONTRACTOR’S BREAKER PERFORMANCE DATA SHEET ................................................................ 46

ATTACHMENT 2 - CIRCUIT BREAKER ALARM CONTACTS TABLE ................................................................................. 54

ATTACHMENT 3 - CIRCUIT BREAKER SCHEMATIC DIAGRAM ..................................................................................... 56

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1. SCOPE

1.1 This contractor shall furnish and deliver 230kV, 150kV and/or 69kV High Voltage Circuit Breaker (HVCB), materials and accessories as specified herein, inclusive of the respective Performance Required Data Sheets included in Appendix (A, B, C and D).

1.2 The high voltage circuit breakers furnished shall be complete with all accessories ready for installation, connection and immediate service.

2. BID SUBMITTALS

2.1 High Voltage Circuit Breaker Data. The Contractor shall provide the appropriate completed Attachment – Contractor’s Breaker Performance Data Sheet for each breaker rating & type proposed.

2.2 Description of the circuit breakers to be used, including manufacturer, make and model, number of years the proposed breaker(s) has been manufactured, and a utility client list with year of purchase.

2.3 Basic technical description of proposed equipment. This information will be used to verify performance ratings and requirements of this specification. Provide specifics on interruption and dielectric design, operating and control mechanisms, include assembly and outline drawings and stored energy system schematic diagrams. Specifically, indicate whether line capacitors or resistors are being proposed for transient recovery voltage control.

2.4 Foundation plan requirements including details and location of the breaker footings, anchor bolt size and placement, conduit penetrations, and anchorage design loads for static and operational conditions, as well as seismic loading conditions as determined in the Seismic Qualification report.

2.5 Outline drawing showing estimates for overall dimensions, shipping dimensions, shipping weights (each component), and locations of components and accessories.

2.6 Preliminary circuit breaker lifting requirements including, but not limited to, sling and spreader bar requirements, approximate lifting weight, and rigging connection details.

2.7 Photographs and Operation and Maintenance instruction books of the proposed circuit breaker(s).

2.8 Contractor’s guaranteed electrical performance specifications.

2.9 Quality Assurance Manual(s)

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2.10 Certified design test reports (in pdf format) as per C37.09 on each type of high voltage circuit breaker to be furnished of the same rating and design being proposed by the Contractor. This will be used to verify the electrical and mechanical ratings, performance and service life of the proposed breaker including capacitance current switching rating, transient recovery parameters, and related line current switching surge factor.

2.11 Seismic qualification reports and anchorage calculations

2.12 Users list (Specify utility client(s), make, model, quantity, delivery and in-service date(s).

2.13 A list of recommended spare parts. Each part listed shall include its unit price and lead-time of delivery. The bidder shall provide unit prices of spare parts for delivery along with the breaker as well as for delivery after the receipt of the breaker by the District, as required by the Purchase Order. In the later case, the bidder shall guarantee the stated prices for a period of eighteen (18) months after the delivery of the breaker.

2.14 A listing and price of any special tools needed for installation or maintenance.

2.15 Indicate the price per day for field supervision and technical assistance.

2.16 A proposed schedule, submitted in Microsoft Project 2000 or later, shall address the following items:

2.16.1 Design drawing submittal, drawing approval, and final drawing issue.

2.16.2 Factory testing and shipping schedule including shipping plans.

2.16.3 Delivery date.

2.16.4 Field Testing completion date, if purchased.

2.17 Indication that a contract administrator shall be assigned as a point of contact within one (1) week of the purchase order being placed and that regular updates including monthly schedule updates shall be provided.

3. REFERENCED STANDARDS AND CODES

3.1 The high voltage circuit breaker and equipment furnished shall conform to the following industry standards:

3.1.1 American National Standards Institute, Inc. (ANSI)

3.1.2 Institute of Electrical and Electronic Engineers (IEEE)

3.1.3 National Electrical Manufacturers Association (NEMA)

3.1.4 National Electrical Safety Code (NESC)

3.1.5 National Electrical Code (NEC)

3.1.6 American Society of Testing and Materials (ASTM)

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3.1.7 Underwriters Laboratories, Inc. (UL)

3.1.8 American Society of Mechanical Engineers (ASME)

3.1.9 California Code of Regulations (CCR)

3.1.10 California Building Code (CBC)

3.1.11 American Society of Civil Engineering (ASCE) Standards 7-05

3.1.12 The high-voltage circuit breakers and equipment furnished under this specification shall conform to the latest revisions of the following Industry Standards.

3.1.13 The following publications listed below form part of this specification:

Number Title Description

IEEE C37.04 Rating Structure for AC High-Voltage Circuit Breakers

IEEE C37.04a Rating Structure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis, Amendment 1: Capacitive Current Switching

IEEE C37.04b Amendment 2: Transient Recovery Voltage

ANSI 37.06 AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis – Preferred Ratings and Related Capabilities

ANSI C37.06.1

Guide for High-Voltage Circuit Breakers Rated on Symmetrical Current Basis Designated “Definite Purpose for Fast Transient Recovery Voltage Rise Time”s

IEEE C37.082 Standard Methods for the Measurement of Sound Pressure Levels of AC Power Circuit Breakers

IEEE C37.09 Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

IEEE 37.09a Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis, Amendment 1: Capacitance Current Switching

ANSI C37.010 Application Guide for AC High Voltage Circuit Breakers rated on a Symmetrical Current Basis

IEEE C37.011 Application Guide for Transient Recovery Voltage on AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

IEEE C37.012 Application Guide for Capacitive Current Switching for AC High-Voltage Circuit Breakers on Symmetrical Current Basis

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IEEE C37.11 Standard Requirements for Electrical Control for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

IEEE PC37.12 Guide for High Voltage (>1000V) Circuit Breaker Instruction Manual

ANSI C37.2 Electrical Power System Device Function Numbers

IEEE C37.90 Relays and Relay Systems Associated with Electric Power Apparatus

IEEE C37.100 Definitions for Power Switchgear

ANSI C39.1 Requirements for Electrical Analog Indicating Instruments

ANSI C57.12.28 Switchgears and Transformers – Pad-Mounted Equipment – Enclosure Integrity

ANSI C57.13 Standard Requirements for Instrument Transformers

ANSI C57.13.1 Guide for Field Testing of Relaying Current Transformers

ANSI C57.13.2 Standard Conformance Test Procedure for Instrument Transformers

ANSI C57.13.3 Guide for the Grounding of Instrument Transformer Secondary Circuits and Cases

ANSI C57.19.00 General requirements and Test Procedure for Outdoor Power Apparatus Bushings

ANSI C57.19.01 Performance Characteristics and Dimensions for Outdoor Apparatus Bushings

ANSI C57.19.100 Guide for Application of Power Apparatus Bushings

ANSI C84.1 Voltage Ratings for Electric Power systems and Equipment (60 Hz)

ASTM D2472-00 Standard Specification for Sulfur Hexafluoride

ICS 1 General Standards for Industrial Controls and Systems

ICS 6 Enclosure for Industrial Controls and Systems

IEEE 4 Standard Techniques for High Voltage Testing

IEEE 693 Recommended Practices for Seismic Design of Substations

NEMA SG 4 Alternating Current High-Voltage Circuit Breaker

NFPA 70 National Electrical Code

NESC C2 National Electrical Safety Code

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CCR TITLE 8 Unfired Pressure Vessel Safety Orders – California Code of Regulations

CCR TITLE 17 Subarticle 3.1, Regulations for Reducing Sulfur Hexafluoride Emissions from Gas Insulated Switchgear sections 95350 to 95359

CBC California Building Code

ACSE 7-05 Minimum Design Loads for Building and other Structures

3.2 All codes and standards referenced in this specification shall be those in effect at the time of Purchase Order award.

3.3 Permission for deviation from this specification and referenced codes and standards must be obtained in writing from District.

3.4 It shall be the Contractor's and/or Manufacturer's responsibility to be, or to become, knowledgeable of the requirements of these Codes and Standards.

3.5 Any changes or alterations to the equipment to make it meet Standards and Codes requirements shall be at the expense of the Contractor.

3.6 Whenever equipment proposed by the Contractor, cannot fully meet the requirements of this specification, such exceptions must be clearly stated by the Contractor.

3.7 The American National Standards Institute (ANSI) device function numbers shall be used to denote all protective devices, circuit breakers, breaker's auxiliary contacts, etc., on all applicable drawings.

3.8 Electrical equipment, 600 volt and below shall bear the approval label of Underwriters Laboratories (UL).

3.9 Any conflict with the standards above and these specifications shall be brought to the District’s attention. The District will then identify the governing standard.

4. DEFINITIONS

4.1 “Contractor” is defined as the provider of the materials/equipment defined in this specification.

4.2 “District” is defined as Sacramento Municipal Utility District (SMUD).

5. SERVICE CONDITIONS

5.1 ENVIRONMENTAL CONDITIONS

5.1.1 The outdoor equipment will be subjected to the following conditions of:

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A. Average outdoor ambient air temperature between -10C to 40C with a

maximum of 47C for 6 hours

B. High ambient sunlight exposure – solar radiation (50W/sq-ft)

C. Relative humidity from 0 to 100%

D. Severe wind gusts of up to 95mph

E. Dust and Sandstorms.

5.1.2 Temperature Limitation:

A. The temperature rise and total temperature of the various parts of the circuit breaker shall to conform to ANSI and IEEE Standard except the ambient shall be 400C with a maximum of 470C for 6 hours.

5.2 Seismic Withstand

5.2.1 The circuit breaker shall be designed to resist the governing load combinations of wind, seismic, operational and transportation loads.

5.2.2 Generally the seismic load combination will govern; however the submittal report shall include engineering calculations in determining the governing load combinations.

5.2.3 The design wind pressure shall be in accordance with the CBC.

5.2.4 The unit shall also be designed to withstand normally expected transportation shocks, depending on the mode of transportation, so that it shall be received at site without damage of any kind.

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6. SEISMIC QUALIFICATION REQUIREMENTS

6.1 Circuit breakers shall be qualified to the requirements of the latest revision of IEEE Standard 693, “Recommended Practice for Seismic Design of Substations”.

6.2 The breaker shall meet the requirements for the moderate seismic qualification level specified in IEEE-693, Annex C.

6.3 Supporting structures shall be furnished and qualified with the circuit breakers.

6.4 Frequency modifying devices shall not be allowed.

6.5 The circuit breaker equipment, accessories and supporting structures shall be designed such that there will be no damage nor loss of function, and the equipment will be remain operational during and following the specified seismic loading.

6.6 The in-service configuration of the breaker shall be as follows:

6.6.1 The breaker will be located on the District supplied concrete slab at grade level.

6.6.2 The slab-on-grade shall be assumed rigid.

6.6.3 The breaker shall be anchored with the anchor bolts supplied and installed by the District, through the Contractor supplied anchoring appendages, after the breaker is placed on the slab. Note: Vendor to prepare and submit design calculation for anchor bolts.

6.7 ANCHORAGE The Contractor shall submit an engineering calculation verifying the anchor bolts diameter and concrete anchorage (embedment) in accordance with Table 1911 A.2 of the CBC. The calculation shall be based on the governing load condition for anchorage. The anchor bolt design shall assume a concrete compressive strength of 4000 psi and special inspection, in accordance with the CBC, will be provided.

6.8 QUALIFICATION REPORT

6.8.1 The Contractor shall use the report templates as outlined in latest issue of IEEE 693 Annex S for submittals.

6.8.2 The report shall be stamped by a registered State of California Professional Civil, Mechanical or Structural Engineer.

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6.9 The anchorage calculation shall be submitted with the Qualification Report for the District’s approval and be wet stamped by a Registered California Civil Engineer. Submittal shall be in accordance with Section 11.3 Submittal Schedule.

7. TECHNICAL REQUIREMENTS

7.1 CONTRACTOR’S QUALIFICATIONS

7.1.1 Contractor shall be fully experienced, reputable, qualified and regularly engaged in the manufacture of outdoor, free-standing, SF6 insulated high voltage circuit breakers ion a high voltage utility substation environment.

7.1.2 The particular design of the HVCB proposed shall have been proven in operation for a minimum of five (5) years in the North American utility industry.

7.1.3 Contractor shall submit a list of North American clients where Contractor has sold the proposed high voltage circuit breakers.

7.2 ELECTRICAL CHARACTERISTICS

7.2.1 The circuit breaker shall meet or exceed all ratings specified in High Voltage Circuit Breaker Data Sheets (Appendices A, B, C, and D) and as defined in Section 3.0.

7.2.2 The circuit breaker shall be outdoor, dead tank type, using SF6 gas for effective arc extinction, and be integrally equipped with current transformers.

7.2.3 High voltage circuit breakers shall employ SF6 for insulation and current interrupting medium using one interrupter per phase with capability for single point servicing. Interrupters shall be of a single pressure “puffer” design. The circuit breaker shall provide full service under the operating conditions described in this specification without sacrificing the normal design life or requiring excessive maintenance.

7.2.4 Each high voltage circuit breaker shall have a hot dipped galvanized structural steel base.

7.2.5 All exposed bolts and washers shall be hot dipped galvanized to inhibit corrosion. Consideration shall be given to assure corrosion due to the contact of dissimilar metals is prevented.

7.2.6 The completely assembled circuit breaker shall have adequate mechanical strength to withstand without damage all stresses due to operation within the rated short circuit current.

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7.2.7 The circuit breaker shall also be capable of withstanding all stresses resulting from open/close operations, and when following the published instructions from manufacturer for installing, moving, and maintaining in the service conditions specified without damage of any kind or functional degradation during the installed design life.

7.2.8 The circuit breaker shall be designed such that no component shall change its characteristics prematurely due to aging, temperature variations, moisture, and corrosion. It shall not wear or loosen excessively with operation and shall not require delicate or frequent adjustments or frequent periodic lubrication beyond the design intent.

7.2.9 All exposed parts on circuit breakers shall be weatherproof.

7.2.10 The circuit breaker shall be designed for easy installation and shall permit reasonable access to all parts for required inspection, maintenance, and adjustments.

7.2.11 Original and replacement parts shall be designed and manufactured such that they can be easily assembled or replaced in the field.

7.2.12 Contractor shall provide a list of all individual component parts with the original manufacturer’s part number in addition to the contractor’s part number.

7.2.13 Contractor shall identify those parts which will require replacement as part of the Contractors preventative maintenance program and shall include anticipated and/or required replacement intervals.

7.2.14 Bolts or nuts which must be loosened or removed when maintaining circuit breakers shall be easily accessible with the proper tool and shall be protected from rusting or corrosion.

7.2.15 All nuts and studs shall be securely locked in place to prevent loosening during operation.

7.2.16 All moving parts shall be made free from objectionable friction due to corrosion or galling of pins, shafts, bushings, etc., using proper corrosion resistant and non-galling materials.

7.2.17 Corrosion resistant cotter pins, fasteners, and washers shall be used throughout.

7.2.18 All clevises and hangers shall be designed to allow rotating pins to move without excessive wear of cotter pins and other fasteners.

7.2.19 Where lubricant is required, the Contractor shall recommend a non-corrosive and non-congealing lubricant and a convenient means shall be provided for its application.

7.2.20 The Contractor shall recommend the maintenance time interval for lubrication.

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7.2.21 All equipment furnished hereunder shall be designed and constructed to comply with all applicable laws and regulations of the State of California, including the General Industry Safety Orders, which must be complied with before equipment can be used lawfully by the District.

7.2.22 Capacitance Current Switching

A. All circuit breakers shall be rated for capacitive switching applications with re-strike performance class C2

B. The circuit breaker shall be capable of switching capacitive currents as defined for a Definite Purpose Circuit Breaker as identified in ANSI C37.06. Additionally, the breaker shall be rated to switch overhead line charging current equivalent ratings listed for definite purpose circuit breakers as identified by ANSI C37.06. The rated transient overvoltage factor shall not exceed 2.0.

7.2.23 Out-Of-Phase Switching

A. The HVCB shall be suitable for switching under out of phase conditions with an opening of 180-degree (full phase opposition) and a closing angle of 90 degree; out of phase current rating shall be 25% of rated symmetrical interrupting capability

7.3 GENERAL REQUIREMENTS AND ACCESSORIES

7.3.1 Interrupters shall be interchangeable within a breaker and between breakers of the same class. Unless otherwise approved, all like breaker parts including bushings shall be interchangeable.

7.3.2 The breaker shall have an operation counter visible from outside of the breaker.

7.3.3 The operation counter shall advance by one number on a trip operation and shall not advance the number on a closing operation.

7.3.4 A reliable and legible mechanical position indicator shall be furnished to indicate the open and closed positions of the circuit breaker. The words "open" on green background and "closed" on red background shall be used. The indicator shall be in an easily viewed location and shall be visible when all doors are closed.

7.3.5 For grounding connection to the station ground grid, the circuit breaker shall be solidly connected through the frame by welding with two ground connections capable of carrying fault currents equal to rated short-circuit current.

A. The grounding connections shall be located at the base below poles 1 and 6.

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B. Two NEMA two-hole stainless steel pads shall provide the ground connections to the circuit breaker and shall be welded to the structural frame.

7.3.6 The gasket seat design shall be such that the gasket will not be displaced by pressure caused by circuit breaker operation at the rated short-circuit current and the related required performances.

7.3.7 The Contractor shall furnish all special tools required to replace any part, maintain, install, and operate the high voltage circuit breaker, including tools required for manual opening and closing of the circuit breaker. Typical special tools are manual spring charging motor tool, SF6 gas fill kit, travel time adaptor, etc.

7.3.8 The circuit breaker shall have provision for using travel recorder equipment such as the Vanguard circuit breaker timer device to perform time travel analysis.

7.3.9 If the proposed circuit breaker design is not compatible to the Vanguard Contractor shall state such limitation of the circuit breaker in the bid.

7.3.10 Time analyzing test equipment, devices and accessories, other than the Vanguard, shall be furnished without additional cost to the District.

7.3.11 Pressure tanks and other pressurized components shall conform to the requirements in; ANSI/IEEE C37.04, ASME Boiler Construction Code for Unified Pressure Vessels, and CCR TITLE 8 Unfired Pressure Vessel Safety Orders - California Code of Regulations.

7.4 OPERATING MECHANISM

7.4.1 Each circuit breaker shall have a single mechanism for simultaneous three-pole closing and tripping, suitable for 125 volt dc operation and control.

7.4.2 The District’s power supply for other auxiliaries will be 120 volt AC, single phase.

7.4.3 The operating mechanism shall be designed to provide for closing and tripping the breaker by remote electrical control.

7.4.4 The operating mechanism shall be located in the control cabinet. The operating mechanism shall be gang operated to simultaneously close or open all three poles.

7.4.5 The operating mechanism, together with its auxiliary switches, terminal blocks, etc., shall be designed and mounted such that there is sufficient space for easy access to all of its parts that require inspection, maintenance, and adjustments.

7.4.6 For purposes of inspection and adjustment, means shall be provided for safe manual operation of each circuit breaker, at a conveniently accessible place.

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7.4.7 The mechanism shall be so designed that the circuit breaker may be closed or opened by one person.

7.4.8 The mechanism shall be mechanically and electrically trip-free with an anti-pump feature.

7.4.9 The Contractor shall furnish a motor compressed spring operating mechanism per C37.12. Solenoid mechanisms are not acceptable. The Contractor shall specify the type in the Bid.

7.4.10 The closing mechanism shall not prevent or delay the rated interrupting time.

7.4.11 The opening mechanism shall be designed such that it ensures positive opening of the breaker within the rated interrupting time when the tripping impulse is received in the fully closed or any partially closed position.

7.4.12 Motor compressed spring operating mechanism shall be provided with the following devices:

A. Means to prevent over charging of spring(s)

B. Means to prevent insufficiently charged spring(s) from attempting a close operation

C. Mechanical indication that spring(s) is charged, not fully charged, or discharged

D. Alarm contact for spring not fully charged.

7.4.13 Motor compressed spring operating mechanism shall be capable of at least two (2)close-open operations at rated short circuit current after which the spring compressing motor shall not require more than 15 seconds to fully compress the closing spring.

7.4.14 The operating mechanism shall have provisions for manually charging the closing spring.

7.4.15 For motor-operated spring charge mechanism, the breaker shall be equipped with an excessive run time alarm. The alarm contacts shall close if the spring recharge motor continues to run after the prescribed recharging time.

7.4.16 Motor compressed spring operating mechanism shall be provided with a charging motor which normally operates from 120 VAC and alternatively from 125 VDC.

7.4.17 The circuit breakers charging motor control circuit shall automatically switch to operate the charging motor from the 125 VDC alternate power source when the normal AC power source is lost.

7.4.18 An alarm contact shall be provided to indicate when the charging motor is supplied from the alternate power supply.

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7.4.19 Coil springs, when used, shall not carry current and shall be used in compression only.

7.5 MOTORS

7.5.1 Motors shall meet the following requirements:

A. All operating mechanism motors shall be suitable for across-the-line starting.

B. Any motor that is not capable of withstanding locked rotor current without damage shall be provided with thermal overload protection.

C. The circuit for operation of the mechanism motor shall be wired independently of the control circuits.

D. Motors shall be able to start fully loaded and to accelerate their loads to rated speed with only 80 percent of motor rated voltage at the motor terminals.

E. Motors shall be able to deliver their rated output in normal operation when the voltage at the motor terminals is within the range of plus or minus ten percent of the motor’s rated voltage.

F. In sizing motors, no portion of the motor service factor above 1.0 shall be used in continuous operation of the motor.

G. Motors shall have windings with Class F insulation with a temperature

rise of 60C for all types of motor enclosures when delivering their rated horsepower in continuous operation.

H. Motor winding insulation shall be impervious to moisture and be protected against light acid conditions, conducting dust, etc., if such protection is not inherent in Bidder’s Class F construction.

I. The service factor (minimum of 1.15) and the type of insulation used shall be indicated on the nameplate.

7.6 SF6 GAS SYSTEM

7.6.1 SF6 gas shall be new and not recycled. SF6 gas shall comply with ASTM D 2472-00.

7.6.2 A pressure (density) gauge and measuring system with switches shall be furnished for each separately pressurized SF6 system.

7.6.3 The pressure gauges shall be capable of withstanding and monitoring the operating pressure and full vacuum.

A. Full vacuum shall mean a vacuum with an absolute positive pressure of 200 microns of mercury.

B. Shutoff valves shall not be used to satisfy this requirement.

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7.6.4 All pressure gauges, pressure switches, valves, and relays, shall be readily accessible and located in suitable, outdoor weather-tight enclosures.

7.6.5 The gauge(s) shall be readily visible from the ground without opening doors on the circuit breaker.

7.6.6 The SF6 high voltage circuit breakers shall utilize a temperature compensated gas density monitor.

7.6.7 The SF6 gas pressure switches shall have two adjustable alarm settings to provide two separate and distinct levels of alarm.

A. The first alarm point, “Low Gas”, will alarm with no breaker activity.

B. The second alarm point, “Low-Low Gas”, will alarm and the breaker will lockout.

C. The settings shall be factory set and not require re-adjustment in the field.

7.6.8 The circuit breaker shall be equipped with SF6 gas pressure and temperature monitoring devices that will provide analog inputs (4-20 mA or 0-10 VDC) to the SEL 2411 per Attachment 3.

7.6.9 Four form “C” contacts shall be provided for pressure below each alarm set point.

7.6.10 Four additional form “C” contacts shall be provided for pressure below the lockout set point.

7.6.11 All gauges shall be scaled in pounds per square inch gauge pressure.

7.6.12 The mechanical operation as well as the electrical operation of the pressure switches shall be tested during “final testing.”

A. The setting at which the pressure switch operated shall be furnished.

7.6.13 All gas piping, fittings, gauges and other connections shall be made leak tight.

7.6.14 Valves used in the gas systems shall have seats designed to ensure a leak-tight breaker with low maintenance requirements.

7.6.15 An SF6 service port shall be provided to facilitate adding gas as necessary. The design shall incorporate a single point for SF6 filling with a leak-tight, self-sealing DILO type disconnects.

7.6.16 Provisions shall be made for withdrawal of gas from each gas system of the circuit breaker for purposes of measuring the moisture content, dielectric strength and other characteristics of the gas when the circuit breaker is not in service.

7.6.17 Means shall be provided for removing the SF6 gauges and/or switches from the equipment and reinstalling without loss of SF6.

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7.6.18 Means shall be provided for testing the settings without depleting the interrupter vessel.

7.6.19 ASME safety relief valves shall be used on all pressure vessels.

7.6.20 Certification that each valve has been tested shall be supplied to District along with the safety relief valve settings and sizing records/calculations.

7.6.21 SF6 gas for filling the breaker completely shall be provided by the Contractor.

7.6.22 The SF6 gas shall be delivered to the substation site in cylinders with the necessary regulator, hoses, and fittings required for filling.

7.6.23 The Contractor shall provide written instructions for filling as well as gas drying, if required. Each circuit breaker shall be furnished with sufficient quantity of SF6 gas to initially place the circuit breaker in service.

7.7 CONTROLS

7.7.1 The control circuit for the operating mechanism shall be in accordance with C37.11 and shall operate from a 125V DC source.

7.7.2 The circuit breaker shall be capable of operating within the voltage ranges as specified in C37.06, and shall be complete with all necessary auxiliary relays for operation from the nominal DC control voltage.

7.7.3 Within the control cabinet the Contractor shall furnish a Local/Remote maintenance cut out switch (Electroswitch catalog #24204B: four decks) and a device 52CS, manually operated control switch, Electroswitch type CSR series 24. The maintenance cut out switch shall be provided to prevent remote operation of the breaker during maintenance. The 52CS switch shall be provided for the purpose of local opening and closing of the power circuit breaker when the maintenance cut out switch is in Local/maintenance position. The 52CS switch shall include RED and GREEN LEDs to indicate the power circuit breaker is closed or open, respectively.

7.7.4 The maintenance cut out switch shall be provided to prevent remote operation of the breaker during maintenance.

7.7.5 For all breakers, two independent trip circuits, primary and backup shall be provided.

A. Each circuit shall consist of a trip coil and auxiliary contacts.

B. The failure of one trip coil shall not damage or impair the operation of the other coil.

C. The auxiliary contacts in the primary trip circuit shall be taken from auxiliary switches different from those in the backup trip circuit.

D. Both trip circuits shall be wired to terminal blocks for District’s use.

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E. The second trip circuit will separately include all the interlocking functions associated with the first trip circuit.

7.7.6 Control relays and control circuit shall be provided which will assure electrically trip-free and non-pumping breaker control.

7.7.7 A manual trip device shall be furnished, accessible from the control cabinet, which shall not require external power.

7.7.8 Cut-off and latch-checking switches shall be provided as necessary.

7.7.9 The control relays and circuit shall be such that the tripping or closing operation will be completed when the control switch contacts have been only momentarily closed, but within the pick-up time of the control relays.

7.7.10 The transient voltage in the entire control circuit, due to the interruption of the control current, shall be limited to 750 volts crest.

7.7.11 All meters and instruments which have to be reset shall be mounted less than six (6) feet above the base of the circuit breaker.

7.7.12 Two independent alarm contacts for each function shall be provided with contact output wired to terminal blocks,

A. One for local annunciator and

B. One for RTU.

7.7.13 Alarm contacts shall be electrically separate, open during normal conditions, and self-resetting.

7.7.14 The alarm contacts furnished with the circuit breaker shall include but not be limited to the contacts listed in Attachment 2: Circuit Breaker Alarm Contact Table.

7.7.15 Auxiliary switches shall conform to the following:

A. A minimum of twenty-four (24) spare single pole auxiliary switches in addition to those used for circuit breaker control circuits shall be provided for District’s use.

B. Switches shall be convertible in field from “a” to “b” contacts.

1 As an alternative, twelve (12) “a” contacts and twelve (12) “b” contacts may be provided.

2 The contacts shall be rated 250 volts dc, and not less than 5 amperes interrupting current.

3 The auxiliary switches shall be provided with dust tight covers.

7.7.16 Alarms shall be wired per Attachment 2: Circuit Breaker Alarm Contact Table.

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7.7.17 An SEL-2411 Programmable Automation Controller (Schweitzer Engineering Laboratories, Inc.) Catalog # 11A3A3A5X0X1631 shall be installed in the circuit breaker control cabinet for the alarms listed in Attachment 2: Circuit Breaker Alarm Contacts Table. A 3ADC circuit breaker shall be installed in the control cabinet to supply 125 VDC power to the SEL-2411 Programmable Automation Controller. Refer to Attachment 3 Drawing (typical all circuit breakers) to wire the SEL-2411.

7.8 CONTROL CABINET

7.8.1 Cabinets and compartments that house aux electrical equipment and operating mechanism shall be NEMA 3R and not less than No. 12 US Gauge.

7.8.2 Proper clearance shall be provided for all internal electrical equipment so the doors may be closed without interference with any control device (e.g., knife switch in open position).

7.8.3 Cabinet front access doors shall be split double-wing type, if width of cabinets/compartments exceeds three (3) feet, to minimize interference with adjoining structures and equipment.

7.8.4 Cabinet doors shall be grounded in all positions

7.8.5 Edges and corners of cabinet and compartment shall be grounded down and rounded.

7.8.6 The breaker control cabinet shall be provided with a screened, louvered vent to allow for air circulation for the anti-condensation heaters inside the control cabinet.

7.8.7 Gaskets shall be attached to the cabinet, swing door, connection compartment.

A. Gasket materials shall permanent and maintenance free.

B. Cork gaskets are not acceptable.

7.8.8 All cabinet and compartment shall be equipped with door stops to hold the doors open during servicing, inspection and maintenance.

7.8.9 Hinged doors for full opening with provisions for holding doors in the open position.

7.8.10 A handle with three point latching mechanism handle with padlocking provisions shall be provided for holding and locking doors in closed position.

7.8.11 All breaker controls and terminal blocks shall be consolidated in the control cabinet, including current transformer secondaries.

7.8.12 The control cabinet shall be equipped with a lighting fixture and door switch,

7.8.13 A duplex, single-phase, 120 VAC, 3-pole receptacle with GFI protection in a weatherproof box shall be externally mounted to the cabinet.

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7.8.14 The control cabinet shall be in an accessible location mounted at a convenient operating height.

A. All gauges and controls shall be located not lower than 3 feet, or higher than 5ft-6 inches above the top of foundations.

B. The cabinet door handles shall be located approximately four feet above the top of foundations.

7.8.15 The interior surfaces of the control cabinet shall be painted white.

7.8.16 A removable gasketed steel plate or approved equal at least 1/8-inch thick shall be provided in the bottom of the control cabinet to accommodate four each 4 inch conduits.

7.8.17 Control cabinet shall be electrically bonded to the breaker frame and shall have a separate grounding point for field connection.

7.8.18 Provide a 12” copper ground bar inside the control cabinet with separate wire connection points for each individual circuit. Provide a minimum of 20% unused spare terminals on each ground bus.

7.9 HEATERS

7.9.1 Heaters shall be provided as follows:

A. Thermostatically controlled heaters shall be supplied to prevent moisture condensation in the control and operating mechanism housing.

B. The heaters shall be installed in the lower portion of the cabinet and be of sufficient distance from the electrical connections, wiring, and devices to minimize deterioration of wiring insulation and components.

C. A separate two-pole circuit breaker shall be provided for each cabinet heater circuit.

D. Heaters shall be rated 240 V and operated at 120 VAC.

E. Heaters shall be suitable for continuous operation and shall be arranged for connection to a circuit independent from any other circuit.

F. Heaters shall be provided with a guard to prevent accidental contact.

7.10 FIBER DISTRIBUTION BOX

The circuit breaker cabinet shall house a Multilink Multilite 2 panel wall mount fiber distribution box (Catalog #WM-2X), mounted in such a way as to allow clear access for all fiber terminations.

7.11 WIRING

7.11.1 All wiring design, construction, drawings, and tests shall comply with the District Engineering Specification SS0001 and SS1009, which are included as attachments to this specification.

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7.11.2 All alarms, auxiliary contacts, current circuits, power supplies and control circuits shall be connected to terminal blocks located in the breaker control cabinet.

7.11.3 No conduit penetration is permitted in the top of the control cabinet, pull boxes, junction boxes and instruments on the breaker.

A. All conduit penetration shall be made from the bottom.

B. If not possible, side penetration is permitted when installed with adequate drains and seals.

7.11.4 Closing and trip coil leads, instrument transformer secondary leads and similar wiring shall be securely anchored.

7.11.5 Terminal blocks for current and potential transformer circuits and for 120 VAC and 125 VDC power supply circuits shall be separate from each other and from terminal blocks for control wiring.

7.11.6 Terminal blocks shall comply with the District Engineering Specification SS1009.

7.12 POWER SUPPLIES

7.12.1 A single phase 120 or 277 Volt AC power supply will be provided by SMUD for lights, heaters, receptacles, and motors.

7.12.2 Contractor shall furnish and install a single-phase buck-boost transformer connected as a grounded autotransformer to step down the supply voltage of 277 Volt to 120 Volt. The KVA capacity of the transformer shall be large enough, but not less than 10kVA, to supply the single-phase load requirements of the circuit breaker and an external load of 2500Watt at 120Volt.

7.12.3 The AC circuits for heaters, outlets, lights, and auxiliaries shall each be equipped with a circuit breaker or pullout fuse block in their hot phase.

7.12.4 The motor circuit shall provide a paired fuse clip in the neutral with a copper slug installed in it.

7.12.5 Provision shall be made for an ungrounded 125VDC incoming supply.

7.12.6 All devices and associated circuits for closing, tripping, and alarm functions shall be rated for 125VDC operation unless otherwise specified.

7.12.7 The close, primary trip and backup trip DC circuits shall each be equipped with separate pullout fuse blocks.

7.12.8 The primary and backup trip circuits shall have copper slugs installed in the clips provided for cartridge fuses. The District will provide these trip circuits with 30A circuit breaker protection at the station DC distribution panel.

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7.13 CURRENT TRANSFORMERS

7.13.1 Current transformers shall be multi-ratio, bushing type and shall meet the requirements of ANSI Standard C57.13.

7.13.2 Quantity, ratio and accuracy class of the CT’s shall be per data sheets (Appendices A, B, C, and D).

7.13.3 The Contractor shall provide certified accuracy curves for the current transformers furnished.

7.13.4 Certified excitation curves for each turns ratio and ratio correction factor curves for each turns ratio shall be included in the instruction manual.

7.13.5 Polarity shall be clearly indicated on all current transformers.

7.13.6 The current transformer secondary wiring shall have oil and water resistant insulation and flame resistant covering, and be designed and installed with adequate supports and bracing to withstand, without injury, the mechanical shocks incident to handling and operation of all electrical, mechanical and thermal stresses due to the momentary and three-second current rating of the circuit breaker.

7.13.7 One or more separate conduits and required fittings shall be installed on the outside of the circuit breaker to provide a dust-proof and rainproof enclosure for current transformer leads from the current transformers to the control cabinet.

7.13.8 The terminal blocks shall be readily accessible and located not more than seven feet above the circuit breaker foundation pad.

7.13.9 All current transformer taps shall be wired directly to CT shorting blocks in the cabinet.

7.13.10 Provisions shall be made for conveniently short circuiting and grounding any pair or all the leads of any one current transformer at short circuiting terminal blocks, using G.E. No. EB27B06S, Buchanan No. 4B106P, or District approved equal, located in the breaker control cabinet. This shall be accomplished without short circuiting at the same time the leads of any other current transformer.

7.13.11 The secondary leads of bushing current transformers shall be clearly and permanently marked at the terminal blocks with the lead designation in accordance with NEMA Standard Publication No. SG4.

7.13.12 Clearly identify bushing number and tap for each lead.

7.14 BUSHINGS

7.14.1 High voltage circuit breakers shall be furnished with sulfur hexafluoride SF6 gas insulated porcelain entrance bushings.

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7.14.2 Bushings shall conform to the electrical and mechanical performance requirements of ANSI C57.19.00 and ANSI C57.19.01.

7.14.3 Each bushing shall be provided with a NEMA four-hole or six-hole terminal connectors as required.

7.14.4 Bushing top terminal connector shall exceed the current rating of the breaker and shall be on aluminum or silver plated copper pads.

7.14.5 Gas filled bushing shall meet all applicable pressure vessel codes and California regulations.

7.14.6 The bushing color shall be ANSI No. 70, Gray.

7.14.7 Bushing numbers and pole numbers shall be clearly marked on all applicable schematics and wiring diagrams.

7.15 SOUND

7.15.1 During operation, the maximum allowable sound levels shall not exceed those stipulated in NEMA Standard SG4.

7.16 SURFACE PREPARATION AND PAINTING

7.16.1 All surfaces of frames, tanks, and other parts exposed to possible corrosion shall be made of corrosion resistant material or protected against corrosion.

7.16.2 Stainless steel, aluminum and galvanized surfaces need not be painted.

7.16.3 The painting surfaces shall be shot blasted or sandblasted, or chemically cleaned and shall be given at least two coats of rust inhibitive paint by the manufacturer.

7.16.4 After cleaning, the equipment shall be primed and finish painted in accordance with Steel Structures Painting Council Standard Specifications (SSPC-SP6) or approved equal.

7.16.5 All paint finishes shall meet ANSI C57.12.28-1988, Section 5.

A. Vinyl and/or lead based paints are not acceptable.

B. The total dry film thickness shall not be less than 4 mils.

7.16.6 The color of the exterior finish coat shall be ANSI No. 70, Gray.

7.16.7 The Contractor shall furnish one (1) pint of ‘touch up’ paint for each circuit breaker supplied. The type, quality, and color of the paint shall be the same as that of the finish coat applied in the factory.

7.17 NAMEPLATES

7.17.1 Circuit breaker nameplates shall be furnished made of stainless steel or other non-corrosive material with all data stamped thereon.

7.17.2 Nameplate data shall be stated in English units.

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7.17.3 Nameplates shall contain the information outlined in IEEE C37.04 including the total SF6 gas capacity in pounds.

7.17.4 The breaker voltage rating shall be stated as the maximum operating voltage without breaker modification or bushing replacement.

7.17.5 The circuit breaker nameplate data shall also include the interrupter pressure and the operating system pressure indicating the normal, alarm and lockout values.

7.17.6 Operating fluid and gas system schematics depicting the relationships of all valves and gauges shall be permanently attached to the inside of the mechanism cabinet door.

7.17.7 A suitable diagrammatic current transformer nameplate shall be installed on the inside of the control cabinet door near the terminal blocks. The nameplate shall include:

A. Current transformer serial number(s),

B. Actual turns between taps,

C. Thermal rating factor (TRF) and,

D. ANSI accuracy class.

7.17.8 All devices, terminal blocks, control panels, compartments, and cabinets shall be identified with engraved lamacoid nameplates in accordance with Specification SS1009.

7.17.9 All nameplate engraving shall be approved in advance by the District.

7.18 FOUNDATION AND ANCHORAGE

7.18.1 Anchorage

A. The Contractor must provide the design for the circuit breaker anchor bolts.

B. The design shall determine the anchor bolt size in accordance with Section 1925.1 of the CBC utilizing the governing load combinations as determined in the Contractor’s seismic qualification.

C. The anchor bolt diameter shall be a minimum of 1inch; the anchor bolt quantity shall be (4).

7.18.2 The anchor bolt design shall assume a concrete compressive strength of 4000 psi and special inspection, in accordance with CBC, will be provided.

A. The calculation must include a tabular listing of the loadings and the load combination at the ground line.

B. The District will supply the anchors in accordance with the design.

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C. The anchorage calculation shall be submitted with the Qualification Report for the District’s approval.

8. TESTING

8.1 GENERAL

8.1.1 The high-voltage circuit breakers and accessory equipment furnished under this Specification shall be fully tested to demonstrate rated electrical and mechanical performance.

8.1.2 Except as otherwise specified, Contractor shall furnish all labor and materials for tests, including:

A. Testing facilities,

B. Power and instrumentation,

C. Replacement of damaged parts.

8.1.3 Each test report shall indicate that all required tests have been performed and that the circuit breaker is in accordance with this specification.

8.1.4 The Contractor’s inspector shall sign the test report.

8.1.5 The Contractor shall not ship the equipment until the District’s representative has approved the certified circuit breaker factory test reports.

8.2 DESIGN TESTS

8.2.1 Contractor shall document that specified design testing has been completed on each design of circuit breaker furnished.

8.2.2 Design tests shall be conducted in accordance with ANSI Standards C37.06, C37.09, and NEMA Standard SG-4 including but not limited to the following:

A. Bushing Dielectric Tests

B. Dielectric Withstand Tests:

1 Withstand test voltages for 245 kV high voltage circuit breakers shall be as follows:

Low frequency 1 minute dry withstand, rms 425 kV

Impulse withstand, full wave, 1.2 x 50 sec, full wave withstand, positive or negative, Crest 900 kV

2 Withstand test voltages for 123 kV high voltage circuit breakers shall be as follows:


Impulse withstand, full wave, 1.2 x 50 sec, full wave withstand, positive or negative, Crest 550 kV

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3 Withstand test voltages for 72.5 kV high voltage circuit breakers shall be as follows:


Impulse withstand, full wave, 1.2 x 50 sec, full-wave withstand, positive or negative, Crest 350 kV

C. Short circuit current interrupting tests

D. Load current tests

E. Capacitor switching current tests

F. Out-of -phase switching current tests

G. Mechanical operation life tests:

1 Mechanical life tests shall include 500 operations with normal lubrication and adjustment, with no replacement of parts required at intervals more frequent than 500 operations.

2 These tests shall be made on a complete mechanism with at least one complete pole.

3 These tests shall not be performed on the District’s breaker without prior consent of District.

H. Control voltage

I. Design tests on pressurized components

J. Tests shall be made with all current transformers in place.

8.3 PRODUCTION TESTS

8.3.1 The Contractor shall perform all production tests required by the applicable standards listed in Section 3 and this specification. The tests shall include, but not be limited to, the tests below.

8.3.2 Certified copies of all required production tests shall be furnished to the District for review and approval.

8.3.3 A copy of the certified test reports shall be included in the shipment.

8.3.4 Circuit breakers and accessory equipment furnished under this specification shall be fully tested as specified herein to demonstrate compliance with the specified ratings and performance.

8.3.5 Except as otherwise specified, Contractor shall furnish all labor and materials for tests, including testing facilities, power and instrumentation, and replacement of damaged parts.

8.3.6 The high voltage circuit breaker(s) shall be completely assembled in preparation for testing.

8.3.7 All current transformers, controls, relays, and other ancillary equipment associated with the circuit breaker shall be installed for the testing.

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8.3.8 All production tests shall be included in the bid price.

8.3.9 All production tests shall be witnessed by District unless authority to proceed without witnessing is granted.

A. At least two weeks written notice of test schedules shall be provided by Contractor.

B. The District may, at his option, witness all tests, parts of tests, or none of the tests.

C. In any case, the Contractor shall maintain his testing schedule.

8.3.10 Acceptance of tests or waiving of tests shall not relieve Contractor from responsibility for furnishing material in accordance with the requirements of these specifications.

8.3.11 All test equipment shall have a Calibration Certification that the unit has been calibrated within 12 months prior to testing.

A. A copy of certification shall be submitted to District.

8.3.12 The Contractor shall submit certified reports of production tests as soon as the tests are completed and available.

8.3.13 All production tests shall be conducted on each breaker and accessory equipment prior to shipment in accordance with applicable sections of ANSI Standard C37.09 and NEMA Standard SG4, including but not limited to the following:

A. 60 Hz ac Hi-Pot Test

B. Control and Secondary Wiring Check Tests

C. Coil Check Tests

D. Bushing Current Transformer Tests, including excitation, polarity, accuracy, ratio, and 1 min power frequency withstand test.

E. Gas receiver Tests

F. Pressure Tests

G. Tank Leakage Tests

H. Bushing Tests

I. Timing Tests including travel record (Equipment: Vanguard circuit breaker timer device).

1 Contractor shall provide a compact disk of the following timing tests:

Close

Open

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Trip-free

J. Mechanical Operation Tests

K. Dielectric Tests on Major Insulation

L. Secondary Control Wiring and Dielectric Tests

M. Contact Resistance Tests

N. Low Frequency Voltage Withstand test

O. Stored Energy System Tests

8.3.14 Production tests shall also include the following:

A. Hi-pot test of current transformer wiring.

B. Demonstrate low air/gas/hydraulic alarms and block closing/lockout features.

C. Demonstrate/prove operation of all control devices and relays:

D. At rated ac and/or dc voltages.

E. Close at 80 percent of rated voltage.

F. Trip at 70 percent of rated voltage.

G. Demonstrate anti-pumping feature of overall breaker operation.

H. Operation of all three phases to demonstrate safe operation, synchronization of the three poles, and general features.

I. Contact resistance shall be measured in micro ohms at 100 amperes.

J. Test results shall be corrected to 20ºC and the correction factor shall be indicated on the test report.

K. Power factor testing shall be performed in accordance with the latest Doble publication “Test Data Reference Books” applicable to the specific type of SF6 circuit breaker.

L. Hot collar tests shall be performed on all bushings. Test results shall be stated in amperes, watts, percent power factor and capacitance.

8.4 FIELD TESTS

8.4.1 District will conduct mechanical and electrical tests of the circuit breakers after delivery and installation at the site to determine correctness of operation and overall conformity to the requirements of the specifications. Tests to be performed are as follows:

A. SF6 moisture and leak check

B. Doble power factor

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C. Mechanical operation tests including, but not limited to, breaker linkages, interlocks, and lockouts.

D. Contact Resistance Tests

E. Stored Energy System Tests

F. Bushing Current Transformer tests, including excitation, polarity, and ratio.

G. Breaker timing tests including travel record (Equipment: Vanguard circuit breaker timer device):

1 Close

2 Open

3 Trip-free

8.4.2 Contractor shall replace at no cost to District, any portion of a breaker found defective in design, material, or workmanship as a result of tests made by District or by the operating experience or performance tests on similar circuit breakers purchased by others indicating inability of the breaker to properly perform.

9. INSPECTIONS AND HOLD POINTS

9.1 The District or its representative may at any time perform audits, inspections, or observe the Contractor/Manufacturer's operations. The Contractor/Manufacturer shall cooperate and provide access to documentation, manufacturing, or testing. The District's inspector shall be provided with full access to the facilities used for manufacturing the breakers.

9.2 These inspections do not relieve the Contractor of his responsibilities for full compliance. The District will notify the Contractor of any situation where the work is not in accordance with the requirements of these specifications.

9.3 All costs incurred by the Contractor as a result of inspection, auditing, or rejection of material shall be considered incidental to the work.

9.4 The Contractor shall schedule, implement, and enforce the following manufacturing hold points:

HOLD POINT RELEASE OF HOLD POINT

Start of fabrication District approval of Approval Submittal

Start of factory test District authorization to proceed with testing

Shipment District approval of test reports, final submittal, and

authorization to ship

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9.5 The Contractor shall not proceed beyond any hold point until authorized to do so by the District, in writing, as outlined above.

10. TECHNICAL DOCUMENTATION TO BE SUBMITTED WITH BID

In addition to the information required elsewhere in the Request for Quotation, and Specifications, (herein after referred to as Contract Documents) the Contractor shall submit with its proposal complete and accurate data and information regarding the following:

10.1 Power Circuit Breaker Data. The Contractor shall provide the completed Attachment 1 – Contractor’s Breaker Performance Data Sheet (for each breaker type) with his proposal.

10.2 All Bid Data required in the Bidding Schedule.

10.3 Description of the circuit breakers to be used, including manufacturer, make and model, number of years this breaker has been manufactured, and a utility clients list with year of purchase.

10.4 Basic technical description of proposed equipment. This description shall include interruption and dielectric design and indicate whether line capacitors or resistors are being proposed for transient recovery voltage control.

10.5 Outline sketch showing estimates for overall dimensions, shipping dimensions, shipping weights (each component), and locations of components and accessories. Included in the submittal shall be the sketch/drawing with significant detail such that it can be verified that the support steel configuration will bolt up to the existing foundation anchor bolts.

10.6 Preliminary circuit breaker lifting requirements including, but not limited to, sling and spreader bar requirements, approximate lifting weight, and rigging connection details.

10.7 Photographs and instruction books of the proposed circuit breaker(s).

10.8 Guaranteed electrical performance specifications.

10.9 Quality Assurance Manual(s).

10.10 Certified design test reports on each type of power circuit breaker to be furnished of the same rating being proposed by the Contractor.

10.11 Type and description of operating mechanism.

10.12 Users list.

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10.13 A list of recommended spare parts. Each part listed shall include its unit price and lead-time of delivery. The bidder shall provide unit prices of spare parts for delivery along with the breaker as well as for delivery after the receipt of the breaker by the District, as required by the Purchase Order. In the later case, the bidder shall guarantee the stated prices for a period of eighteen (18) months after the delivery of the breaker.

10.14 A listing and price of any special tools needed for installation or maintenance.

10.15 Indicate the price per day for technical assistance in the field.

10.16 A proposed schedule, submitted in Microsoft Project 2000 or later, shall address the following items:

10.16.1 Design, drawing submittal, drawing approval, and final drawing issue.

10.16.2 Factory testing and shipping schedule including shipping plans.

10.16.3 Delivery date.

10.16.4 Installation completion date, if purchased.

10.16.5 Field Testing completion date, if purchased.

10.17 Indication that a contract administrator shall be assigned as a point of contact within one (1) week of the purchase order being placed and that regular updates including monthly schedule updates shall be provided.

11. DRAWINGS AND DOCUMENTS

11.1 GENERAL

11.1.1 The Contractor shall prepare and submit drawings and technical documents in accordance with the requirements of the attached District Engineering Specification SS0001 and applicable ANSI and IEEE standards. Symbols shall be in accordance with the ANSI and IEEE standards. In case of conflict, the District’s standards shall take preference.

11.1.2 All electronic drawing submittals shall be in AutoCAD 2009 or earlier format.

11.1.3 Contractor shall, with each submittal of drawings, include a copy of a transmittal letter and a list of all drawings furnished. Transmittal letters shall specify the subject matter, the specification number, the District's contract number, the project(s), and project(s) bill of material item number(s), as required for identification by the District.

11.1.4 The sequence of submittal of all drawings shall be such that all information is available for checking each drawing when it is received. All catalog commercial items shall be submitted with complete descriptive literature.

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11.1.5 The Contractor shall use the District title block for all drawing submittals. The District will furnish a disk with the District title block after award.

11.1.6 Each drawing submittal, together with its transmittal letter and a list of drawings, shall be handled expeditiously. If required to meet the project schedule, the submittal shall be sent by overnight mail.

11.1.7 All submittals shall be sent to:

11.1.8 SACRAMENTO MUNICIPAL UTILITY DISTRICT Attention: Project Engineer (see Attachment 1) P.O. Box 15830 Mail Stop EA201 Sacramento, CA 95852-0830

11.1.9 When other than "APPROVED" submittal are returned, the Contractor shall make the necessary revisions and shall resubmit. Each submittal shall state the revision number, the date, and the subject in a revision block.

11.1.10 The Contractor shall revise submittal, as required, without unnecessary delay and return it to the District.

11.1.11 The District will review and return the documents as described in SS0001. Final documents shall be submitted no later than two (2) weeks after the District returns a submittal marked FINAL DRAWING - Submit in accordance with SS0001.

11.1.12 Any manufacturing or fabrication work performed prior to the approval of drawings, shall be at the Contractor's risk. In such a situation, the Contractor shall make all changes necessary to make the equipment conform to the provisions of the contract, without additional cost to the District.

11.2 SUBMITTAL DOCUMENTS

11.2.1 Outline drawings showing plan, elevation, and section views; mounting dimensions and including locations of control cabinet, terminals, conduit, and ground pad location detail, NEMA 4 hole terminal details; and weights.

11.2.2 Seismic Qualification Report in accordance with Annex S of IEEE 693 and Anchorage Calculations.

11.2.3 Foundation diagrams showing location of anchor bolts and static and dynamic forces that the foundation must withstand.

11.2.4 Drawings showing nameplate, AC and DC schematic/elementary diagrams, control and mechanism wiring, details of primary and secondary disconnecting devices, maintenance and renewal parts bulletins and the following information:

A. Trip coil, closing relay, and closing coil currents in amperes.

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B. Time in cycles from application of closing energy until the breaker contacts touch.

C. Pneumatic and/or hydraulic or spring operating system (See Note 1)

D. SF6 gas system

Include gauges, manifolds, valves, safety devices, filling provision(s), pump(s), etc. for pneumatic and/or hydraulic or spring operating system, and SF6 gas system, as applicable.

E. List of devices by manufacture, type, and rating located in the breaker cabinets

F. Space heater data including location, size, voltage, and total load

11.2.5 Current Transformer Information:

A. Drawing showing dimensions, mounting, and terminals.

B. Current transformer characteristics showing secondary saturation, ratio, and phase angle error; resistance value for all taps; metering correction factors for each ratio for Burdens B0.5, B1, B2, and B4.

C. Wiring diagrams of current transformers, including terminal block connections, polarity, and ratio diagrams.

11.2.6 Inspection and test reports documenting:

A. Maximum DC resistance of the power carrying circuit from terminal to terminal of the circuit breaker,

B. Actual contact opening time from energization of trip coil to contact parting (Include time travel record curve), and

C. Test reports of Bushing Current Transformers including Excitation and Ratio tests.

11.2.7 The Contractor shall provide the District with the characteristics of the SF6 gas being supplied prior to shipment of the SF6 gas.

A. The District will use these characteristics as criteria for shipment acceptance.

B. All SF6 gas shall be certified by the Contractor to be in compliance with ASTM D 2472.

11.2.8 Photographs showing:

A. The unit overall,

B. The control cabinets interior, and

C. Details of installation of devices in the control cabinets such as relays, terminal blocks and wiring (after wire labeling is complete)

11.2.9 Schedule.

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A. Within five (5) working days following notification of award of contract, the Contractor shall issue a production schedule covering engineering, manufacture, equipment delivery, and submittals in accordance with these specifications. The schedule shall be depicted as a bar chart with specific dates. At least the following details shall be clearly noted in the schedule:

1 The "Hold Point Dates" as defined in "INSPECTION AND HOLD POINTS"

2 Contractor scheduled fabrication milestones

3 The document submittal dates as defined in the following section "SUBMITTAL SCHEDULE"

4 Shipment date from factory

5 Receiving date at Delivery Site

B. Any proposed revision to the production schedule must be submitted to the District within five (5) days of the occurrence of an event driving the revision.

11.2.10 Any other drawings or data required for the design of the circuit breaker installation or related facilities.

11.2.11 Operations and Maintenance Instruction Manual

A. Contractor shall furnish two (2) draft copies of a complete Operation and Maintenance (O&M) manual for installation, operation and maintenance requirements for the 230kV High Voltage Circuit Breaker (HVCB). Submit for review within thirty (30) calendar days after receiving the District Representative’s approval of all required submittals pertaining to any mechanical, electrical or instrumentation equipment or systems, as applicable. The final O&M manual shall be provided to the District prior to delivery of the specified equipment.

B. The District will return one marked-up review copy of the draft Operation & Maintenance manual to the Contractor for corrections.

C. The Contractor shall return one (1) corrected copy for checking of conformance to District comments.

D. After receiving approval of the draft Operation & Maintenance manuals from the District, the Contractor shall prepare four (4) transmittal sets. Final approval of the Operation & Maintenance manuals will be made by the District.

E. Computer File Backup

1 Final Operation & Maintenance manual text material shall be in adobe acrobat (PDF) electronic format. Two copies of computer

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disks with the final approved text written for the equipment Operation & Maintenance manuals shall be transmitted to the District.

2 Drawings which have been generated by the Contractor shall be in AUTOCAD. Two copies of computer disks with the final approved AUTOCAD Drawings shall be transmitted to the District.

F. FORMAT

1 Prepare data for each Operation & Maintenance Manual in the format of an instructional manual.

2 Binders: Commercial quality, 8-1/2 x 11 inch three-ring binders with hardback, cleanable, plastic covers; three inch maximum ring size. When multiple binders are used, correlate data into related consistent groupings.

3 Cover: Identify each binder with typed or printed title OPERATION AND MAINTENANCE INSTRUCTIONS; list title of Project; identify subject matter of contents.

4 Arrange content by system under Attachment numbers and sequence of Table of Contents of these Specifications.

5 Provide tabbed flyleaf for each separate product and system, with typed description of product and major component parts of equipment.

6 Text: Manufacturer’s printed data, or typewritten data on white bond paper.

7 Drawings: Provide with reinforced punched binder tab. Bind in with text; fold larger drawings to size of text pages.

G. Contents

1 Title Sheet/Table of Contents: Provide for each Operation & Maintenance manual a title sheet/table of contents indicating title of Project; names, addresses, and telephone numbers of Design Engineer, Engineer and sub consultants with name of responsible parties; schedule of products and systems, indexed to content of the volume.

2 Contact Representative for each product or system: list names, addresses and telephone numbers of manufacturers and supplies, including local source of supplies and replacement parts.

H. Product Data:

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Mark each sheet to clearly identify specific products and component parts, and data applicable to installation. Delete inapplicable information. List the following design data in the Table of Contents:

1 HVCB design description.

2 Schematic representation of pertinent system components, including SF6 gas

3 System, alarms, control and protection, and Owner interface points.

4 Detailed functional description of each component of the HVCB.

5 Detail electrical diagram of connections.

6 SF6 bushing outline, including strike and creepage distances.

7 Foundation loading data and supporting calculations.

I. Each Operation & Maintenance manual shall include, but not be limited to, the following:

1 Provide a listing in table of contents for design data, with tabbed flysheet and space for insertion of data. Include a Bill of Materials for all equipment furnished.

2 Name, address and telephone numbers of corporate and local vendor contacts.

3 Detailed description of the function of each principal component of the HVCB.

4 Performance and nameplate data.

5 Installation instructions.

6 Procedure for start-up, shut-down, and break-in.

7 Proper adjustment.

8 Test procedures and trouble-shooting guide.

9 Procedure for operating.

10 Shutdown and grounding instructions

11 Procedure for maintaining current interrupting contacts.

12 Emergency operating instructions and troubleshooting guide.

13 Safety precautions including manufacturer’s code of safe practice.

14 Complete nomenclature and part number of replaceable parts.

15 Maintenance Requirements: Include routine preventive maintenance procedures and guide for disassembly, repair, list of special tools required, and reassembly instructions; and alignment, adjusting, balancing, and checking instructions.

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16 Provide complete preventive maintenance program with maintenance schedule in tabular form.

17 Provide original manufacturer’s spare parts list for specific equipment, exploded diagrams of specific equipment, electrical schematics for specific equipment, and diagrams required for maintenance. Provide current price list for spare parts.

18 Provide list of special tools required for maintenance tasks.

11.3 SUBMITTAL SCHEDULE

The following documents are required for the overall design of the project and shall be submitted for approval within the following schedule after award of contract:

11.3.1 Five (5) working days – Production Schedule.

11.3.2 One (1) week for Layout - Plans, Elevations, Sections & Details, Seismic Qualification Report & Anchorage Calculations, and Foundations.

11.3.3 Two (2) weeks for schematics and elementary diagrams, nameplates.

11.3.4 Connection/Wiring diagrams and all other required information shall be submitted one (1) week after District’s approval of the schematic and elementary diagrams.

11.3.5 In addition to the above, Inspection and Test Reports and Photographs shall be submitted in the final form before release for shipment. The District may require modification or additions if documents are incomplete or fail to meet the requirements herein. If these documents require revision, the release of the hold point before shipment may not be granted until the revision is completed.

12. SHIPPING AND PACKAGING

12.1 The circuit breaker shall be shipped completely assembled, except sub-frame if required, and filled with SF6 gas at reduced pressure.

12.2 SF6 gas for filling the breaker completely shall be provided with the following documentation:

12.2.1 SF6 gas cylinders shall be stamped with the Tare weight and a serial number.

12.2.2 The invoice or bill of lading (packing list) shall contain;

A. Quantity of bottles (cylinders)

B. Gross weight of bottles

C. Tare weight

D. Serial numbers of bottles

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E. Total weight in lbs of SF6 used in the breaker for shipment

12.3 The Contractor shall prepare shipment as follows:

12.3.1 Special attention shall be given to prepare the equipment for shipment ensuring that no damage occurs during transit and that all parts are properly protected from moisture and corrosive conditions.

12.3.2 The equipment shall be adequately packed, crated and braced to protect against damage during shipping, handling and storage for up to 1 (one) year. The manufacturer’s recommendations for storage will be followed.

12.3.3 The exterior of shipment shall be clearly marked with the Contractor’s Name, the District’s Name and Project Name specified in Attachment 1.

12.3.4 A copy of the instruction book and certified assembly drawings shall be sent with the equipment

12.3.5 A packing list shall be prepared for each shipping container. One copy shall accompany each shipment of the equipment, and one copy shall be mailed to the District Project engineer at the following address:

12.3.6 SACRAMENTO MUNICIPAL UTILITY DISTRICT Attention: Project Engineer (see Attachment 1) P.O. Box 15830 Mail Stop EA201 Sacramento, CA 95852-0830

12.3.7 The Contractor shall clearly identify the equipment in the shipping bill with the Contract number and bill of material item number.

12.4 The delivery shall be made in an open flat bed truck only. No exception will be allowed. The District is only equipped to off-load from an open flat bed truck

12.5 The Contractor shall furnish the District with drawings and explanation of any special internal blocking and wedging installed only for transportation

12.6 The Project Engineer listed in Attachment 1 data sheet shall be notified by telephone as follows:

12.6.1 When the high voltage circuit breaker shipment leaves the factory

12.6.2 If shipped by ship:

A. When the ship shipping the circuit breaker leaves port

B. When the ship shipping the circuit breaker arrives in the US port at which the circuit breaker will be unloaded, as applicable

C. When the transport shipping the circuit breaker from the US port departs form that port, as applicable

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12.6.3 Between 24 and 48 hours before arrival of each shipment at the location specified in Attachment 1 data sheet.

12.7 If proper notification is not provided to the District to make arrangement for receiving of the shipment, the Contractor shall be responsible for all cost incurred due to redelivery of the said equipment.

12.8 The Contractor shall deliver the high voltage circuit breaker to the location specified in the Contractor’s data sheet (Attachment 1) included in this specification.

12.9 The Contractor shall deliver the equipment only during working week days from 7:30 AM to 3:00 PM Monday through Friday except holidays to the address listed in Attachment 1 data Sheet.

13. MANUFACTURER’S REPRESENTATIVE TECHNICAL SUPPORT /TRAINING

13.1 The contractor’ field Engineer shall be present and provide supervision services of field installation which is to be performed by District personnel of the HVCB, and complete pre-energization inspection of the equipment.

13.2 The Filed entire shall have a through working knowledge of the complete HVCB, including internal and external components.

13.3 The Contractor’s Field Engineer shall furnish supervision for field installation as specified. Supervision services hall be for a period of two (2) eight hour days during installation of one HVCB at a District electrical substation facility. The supplier shall be responsible for all cost associated with travel and accommodation for their Filed Engineer(s) during this two day period.

13.4 Once the HVCB has been placed in services, the Contractor shall provide the services of their filed Engineer to instruct District Electrical Substation O&M personnel in the proper performance of their operation and maintenance duties as it pertains to the HVCB. The Contractor shall provide these services for a period of two (2) eight hour days. These services may be performed at a District training facility or onsite at a substation facility located in Sacramento County, CA.

13.5 It will be the responsibility of the contractor to pay all their travel and lodging expenses related to the required field services

14. WARRANTY

14.1 Contractor/Manufacturer warrants that all work to be performed or equipment to be supplied shall be capable of accomplishing the service anticipated by the Specifications and shall be free from defects as to material, design, and workmanship, and operate successfully, without objectionable noise or undue vibration under any condition of operation.

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14.2 District shall have authority to reject any work or material, or any part thereof, which does not, in their opinion, conform to the plans, drawings, or specifications, suitability for purposes intended, and contract, and it shall be permissible to do so at any time during the progress of the work and until its acceptance.

14.3 Such inspection shall not relieve Contractor/Manufacturer from any obligation to perform said work, or provide equipment, in accordance with the plans and specifications, or any modifications thereof, suitable for the purposes intended. Work not so constructed shall be removed and made good by Contractor/ Manufacturer at no additional cost to District, including cost of removal, transportation and re-installation, whenever so ordered by District, for a period of one year from date of energization.

15. QUALITY ASSURANCE

15.1 The components and parts used in the construction and assembly of the HVCB shall be of new and current manufacture. The use of used or obsolete components and parts will not be acceptable.

15.2 All parts, equipment and accessories shall conform in strength, quality of material and workmanship to recognized industry standards.

15.3 Contractor shall have a formal quality assurance program. The quality assurance program shall consist of systematic procedures that provide confidence that the work is in accordance with these specification.

15.4 An uncontrolled copy of the quality assurance manual shall be provided with the bid. The manual shall have descriptive information and details of the program. This information shall include program organization, documentation requirements, and quality control procedures.

15.5 The persons responsible for quality assurance shall be experienced in identifying quality problems. They shall have authority to enforce quality requirements and to recommend and initiate solutions.

15.6 Quality control procedures shall include testing procedures, acceptance criteria, repair methods, and the quality control requirements of these specifications.

15.7 Quality control procedures shall include procedures to assure developing and maintaining the quality of software over the commercial life of “intelligent” software for digital electronic devices and instruments furnished by the Contractor and Sub-Contractors, as applicable.

15.8 Documentation requirements shall include certification of material, audit and inspection records, deficiency corrections, and equipment calibration records.

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15.9 The Quality Assurance Program shall be documented and presented to the individuals performing the work through a formal training program. Inspections and audits shall be performed and documented to ensure that the program is being followed.

15.10 The District reserves the right to reject the quality assurance program as inadequate and request augmentation to the program prior to contract award.

15.11 No material or equipment shall be shipped from point of manufacture before it has been inspected by District, unless the District authorizes inspection to be made elsewhere. The District shall have access to the facilities for unrestricted inspection of the work. The District shall have the right to perform engineering or quality assurance inspection visits at the Contractor’s manufacturing facility at any time.

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APPENDIX A - 245 kV High Voltage 2000A Circuit Breaker Performance Requirement Data Sheet

1. Type of breaker Dead Tank

2. Insulating medium SF6 gas

3. Nominal voltage rating 230 kV

4. Maximum voltage rating 245 kV**

5. Frequency and phase 60 Hz, 3 phase

6. Continuous current (47oC) 2000 Amp.

7. Rated short circuit current 40 kA sym rms at 245 kV

8. Close and latch capability 104kA (peak)**

9. Short time capability (3 sec) 40 kA

10. Parameters transient recovery voltage per ANSI/IEEE C.37.06:

a. Rated time to point P, T2, sec 520

b. Rated rate, R, kV/ sec 2.0

c. Rated delay time, T1, sec 2

11. Impulse Withstand Voltage, 1.2x50 sec wave 900 kV

12. Power frequency withstand (dry) 425 kV

13. Rated Interrupting time 3 cycles

14. Duty cycle OCO-15S-CO

15. NESC Vertical Clearance unguarded parts 13 ft - 9 in (Min)*

16. Bushing Creepage 212 inch (Min)

17. Bushing Current Transformers

a. Quantity per bushing 2

b. Type Relay accuracy

c. Class C800

d. Ratio 2000:5 (Multi-Ratio)

e. Thermal rating factor 2.0

18. Seismic Zone Moderate

*Per table 124-1 NESC.

**Per latest ANSI/IEEE Standards

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APPENDIX B - 245 kV High Voltage 3000A Circuit Breaker Performance Requirement Data Sheet




4. Maximum voltage rating 245 kV**



















c. Class C800




*Per table 124-1 NESC.


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APPENDIX C - 123 kV High Voltage 2000A Circuit Breaker Performance Requirement Data Sheet




4. Maximum voltage rating 145 kV



















c. Class C800





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APPENDIX D - 72.5 kV High Voltage 2000A Circuit Breaker Performance Requirement Data Sheet




4. Maximum voltage rating 72.5 kV**



7. Rated short circuit current 31.5 kA sym rms at 72.5kV

8. Close and latch capability 82 kA (peak)**

9. Short time capability (3 sec) 31.5 kA



b. Rated rate, R, kV/ sec --

c. Rated delay time, T1, sec --










c. Class C800




*Per Table 124-1 NESC.


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ATTACHMENT 1 - Contractor’s Breaker Performance Data Sheet

CONTRACTOR / MANUFACTURER :

SMUD Equipment No (s):

Circuit Breaker Rated

Voltage:

Project Site Location:

Address:

SMUD Project Engineer:

Phone No.:

Fax No.:

Mobile No.:

Email Address:

1.0 Site Conditions

1.1 Location

1.2 Elevation (above mean sea level )

1.3 Ambient Temp Range -10°C to 47°C

1.4 Wind Speed 95 mph

1.5 Earthquake load Qualify equipment to IEEE 693 moderate

seismic performance level. A support

structure shall be provided with the

equipment and shall be part of the

qualification. Frequency modifying

devices shall not be allowed.

Qualification shall conform to IEEE 693.

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(CONTRACTOR TO COMPLETE ALL DATA FOR EACH TYPE OF CB PROPOSED)

Circuit Breaker Model Number

2.0 General Technical Data

2.1 Rated nominal voltage (kV, rms)

2.2 Rated maximum voltage (kV, rms)

2.3 Rated voltage range factor, K 1.0

2.4 Rated frequency (Hz) 60

2.5 Rated continuous current (47C) (A, rms)

2.6 Rated short-circuit current at rated

maximum voltage

(kA, rms)

2.7 Rated Short circuit current (3 second) (kA, rms)

2.8 Rated Short Line Fault interrupting

capability

2.9 Rated out of phase switching current (kA, rms)

2.10 Rated capacitance switching current (amps, rms)

2.11 Rated standard operating duty cycle

2.12 Rated interrupting time (cycles)

2.13 Closing and Latching capability (kA, peak)

2.14 Closing Time (main contacts make) (ms)

2.15 Minimum reclosing time (ms)

2.16 Permissible tripping delay (sec)

2.17 Arc extinction time, max/min (ms)

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2.18 Opening time from energization of trip

coil to contact parting.

1. At rated voltage (ms)

2. At minimum voltage (ms)

2.19 Main contact material

2.20 Number of interrupters per phase

2.21 Maximum impact noise level, during

operation, at a point 3 feet from the

breaker

(dBA)

3.0 Withstand Voltages

3.1 Power frequency withstand (dry) (kV, rms)

3.2 Full wave impulse (1.2 x 50 sec.)

between terminals & to earth

(kV, peak)

4.0 Operating Mechanism

4.1 Type – Pneumatic or Spring

(closing/opening)

4.2 Operating Voltage (VDC) 125 VDC

4.3 Closing Current at 125 VDC (amps)

4.4 Trip Current at 125 VDC (amps)

4.5 Closing voltage range (V)

4.6 Tripping voltage range (V)

4.7 Number of trip coils

5.0 Air Supply System ( where applicable)

5.1 Compressor Motor Voltage (V)

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5.2 Compressor Motor Output (hp)

5.3 ASME safety valve certifications (Yes or No)

5.4 Capacity of Air Reservoir

5.5 Maximum Design Pressure

5.6 Operating Duty ANSI

5.7 Number of CO Operations without

recharging

5.8 Safety Valve Working Pressure

6.0 Minimum Number of Operations

before the Breaker Must Be Removed

from Service for Maintenance or

Inspection

6.1 No load mechanical operations

6.2 Full load non-fault operations

6.3 Rated short-circuit current breaking

operations

6.4 Expected number of man-hours

required to perform a complete

maintenance inspection of one breaker

(including gas handling time)

6.5 Number of breaker operations without

motor operations.

7.0 Current Transformers

7.1 Poles 1, 3 and 5:

1. No of CT's per pole

2. Rated prim./sec. current

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3. Accuracy class:

7.2 Poles No. 2, 4 and 6:

1. No of CT's per pole

2. Rated prim./sec. current

3. Accuracy class:

7.3 Number of CT's per Circuit Breaker

8.0 Auxiliary Power Requirements

8.1 Spring Charge Motor Horsepower Hp

8.2 Full Load Current at 125 VDC

8.3 Locked Rotor Current at 125 VDC

8.4 Total connected 1 phase load at 120

VAC

kW

9.0 Bushings

9.1 Manufacturer/part number

9.2 Material

9.3 Dry-1 min 60 Hz withstand (per ANSI) (kV rms)

9.4 Wet-10 s 60 Hz withstand (per ANSI) (kV rms)

9.5 Phase-to-ground external strike

distance

(in)

9.6 Phase-to-phase external strike distance (in)

9.7 External creep distance (in)

9.8 Cantilever strength (Ft-lbs)

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9.9 Acceptable terminal load (lbs)

9.10 Rated current (A)

9.11 Color

10.0 Gas System

10.1 Rated SF6 pressure at 20C (psig)

10.2 SF6 alarm pressure at 20C (psig)

10.3 SF6 lockout pressure at 20C (psig)

10.4 Type of pressure relief device

10.5 Setting of pressure relief device (psig)

10.6 Total required SF6 gas supplied for

each breaker

(lbs)

11.0 Weights, Dimensions, and Clearances

11.1 Total weight (with SF6 gas) (lbs)

11.2 SF6 Gas Weight (Net) (lbs)

11.3 Bushing (1P) (lbs)

11.4 Weight of the heaviest piece of

equipment to be handled during

construction (name the item)

(lbs)

11.5 Total Shipping Weight of Circuit

Breaker

(lbs)

11.6 Height of Circuit Breaker Overall (inches)

11.7 Length of Circuit Breaker Overall (inches)

11.8 Width of Circuit Breaker Overall (inches)

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11.9 Phase Spacing Between Circuit

Breaker Poles

(inches)

11.10 Clearances Required Above Circuit

Breaker

(inches)

11.11 Clearance to Ground (inches)

12.0 Spare Parts and Special Tools

(Specify “included” or state price.)

12.1 One set of special tools for erection,

dismantling and maintenance of

breakers

12.2 One hand reclosing lever for manual

slow closing the circuit breaker

12.3 One SF6 gas charging kit including

services hoses and connectors, SF6

cylinder, etc.

12.4 One extinction chamber

12.5 One SF6 pressure switch

12.6 One set of gaskets for single-pole

breaker

12.7 One set of cabinet heater elements

12.8 One motor of each type

12.9 One set of operating mechanism for the

breakers

12.10 10% of parts relative to the operating

devices such as closing, tripping,

control and relay coils. (Minimum of 2

pieces)

12.11 One complete bushing assembly

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13.0 Auxiliary Control Equipment

13.1 SEL-2411 installed per Sec 8.7.17

13.2 Multilink Multilite 2 fiber distribution

box (Catalog #WM-2X) per Sec 8.10

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ATTACHMENT 2 - Circuit Breaker Alarm Contacts Table

Alarm Circuit Breaker Alarm Contacts Table

Contact

# Alarm Contact Functional Description Alarm Point for District’s Use

1 SF6 GAS PRESSURE LOW ALARM BREAKER TROUBLE TO ANN.POINT #3

2 LOW SPRING CHARGE ALARM BREAKER TROUBLE TO ANN.POINT #1

3

LOSS OF AC MOTOR VOLTAGE WITH

AUTO-TRANSFER BREAKER TROUBLE TO ANN.POINT #1

4

LOSS OF DC PRI. TRIP

UNDERVOLTAGE RELAY BREAKER TROUBLE TO ANN.POINT #1

5

LOSS OF DC SEC. TRIP

UNERVOLTAGE RELAY BREAKER TROUBLE TO ANN.POINT #1

6 LOSS OF DC MOTOR BREAKER TROUBLE TO ANN.POINT #1

7

LOSS OF DC CLOSE

UNDERVOLTAGE RELAY BREAKER TROUBLE TO ANN.POINT #1

8 MOTOR EXCESS RUN TIMER BREAKER TROUBLE TO ANN.POINT #1

9

PRI. BLOCK TRIP AND BLOCK

CLOSE, SF6 GAS PRESSURE LOW

AND LOW SPRING CHARGE ALARM

PRI. CB BLOCK TRIP AND BLOCK CLOSE TO

ANN.POINT #2

10

SEC. BLOCK TRIP AND BLOCK



SEC. CB BLOCK TRIP AND BLOCK CLOSE TO

ANN.POINT #2

11

BLOCK CLOSE LOW SPRING

CHARGE CB BLOCK CLOSE TO ANN.POINT #2

12 SF6 GAS PRESSURE LOW ALARM

WIRE TO SEL-2411 DIGITAL INPUT IN301 PER

Attachment 3 Drawing

13

PRI. BLOCK TRIP AND BLOCK





14

SEC. BLOCK TRIP AND BLOCK





15 LOW SPRING CHARGE ALARM



16

BLOCK CLOSE LOW SPRING

CHARGE



17

LOSS OF AC MOTOR VOLTAGE WITH

AUTO-TRANSFER



18

LOSS OF DC PRI. TRIP

UNDERVOLTAGE RELAY



19

LOSS OF DC SEC. TRIP

UNERVOLTAGE RELAY



20 LOSS OF DC MOTOR



21

LOSS OF DC CLOSE

UNDERVOLTAGE RELAY



22 MOTOR EXCESS RUN TIMER



23 LOCAL/REMOTE SWITCH 43



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Alarm Circuit Breaker Alarm Contacts Table

Contact

# Alarm Contact Functional Description Alarm Point for District’s Use

24 CB STATUS 52a



25 CB STATUS 52b



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ATTACHMENT 3 - Circuit Breaker Schematic Diagram

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