COMPACT TYPE TRANSFORMER SUBSTATIONS-MYD 2000-036.A.pdf

8/10/2019 COMPACT TYPE TRANSFORMER SUBSTATIONS-MYD 2000-036.A.pdf

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TEDA-MYD/2000-036.A

TURKISH ELECTRICITY DISTRIBUTION CO.MATERIAL MANAGEMENT AND PURCHASING DEPARTMENT

TECHNICAL SPECIFICATIONFOR

COMPACT TYPE MV/LV DISTRIBUTION TRANSFORMER SUBSTATIONSWITH AIR INSULATED METAL ENCLOSED MODULAR CUBICLES

APRIL- 2000SEPTEMBER2003 (REVISED)


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TECHNICAL SPECIFICATIONSFOR

COMPACT TYPE MV/LV DISTRIBUTIONTRANSFORMER SUBSTATIONS

WITH AIR INSULATED METAL ENCLOSED MODULAR CUBICLES

CONTENTS

1. GENERAL1.1. Subject and Scope1.2. Standards1.3. Regulations1.4. Service Conditions

2. DESIGN AND STRUCTURAL CHARACTERISTICS2.1. Type2.2. Arrangement and Dimensions2.3. Constructional Characteristics

2.3.1. General2.3.2. Constructional Characteristics of Metal Enclosed Substations2.3.3. Constructional Characteristics of Concrete Enclosed Substations

2.4. Degrees of Protection2.5. Water Tightness2.6. Protection Class2.7. Ventilation2.8. Doors and Locking Systems2.9. Installation of Equipment2.10. Internal Arc Withstand

3. ELECTRICAL EQUIPMENT3.1. Distribution Transformer3.2. MV Metal Enclosed Switching and Control System (MV Cubicles)3.3. LV Distribution Panel3.4. Internal Cable Connections3.5. Earthing System3.6. Internal Lighting

3.7. Battery Rectifier Group3.8. Protection Control and Signalization System

3.8.1. Protections belonging to MV/LV Distribution Transformer3.8.2. Fault Detection Equipment

4. NAMEPLATES AND DANGER NOTIFICATIONS

5. ANTICORROSION PRECAUTIONS5.1. General5.2. Painting5.3. Galvanizing

6. INSTALLATION IN THE FIELD

7. TESTS7.1. Type Tests7.2. Routine Tests7.3. Acceptance Tests and Provisions

7.3.1. Sampling and Acceptance Tests7.3.2. Acceptance Criteria7.3.3. Provisions For Acceptance Tests7.3.4. Acceptance Procedure


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8. MISCELLANEOUS CONDITIONS8.1. Transportation8.2. Spare Parts8.3. Special Tools and Test Devices8.4. Documents to be Submitted with the Bid8.5. Documents to be Submitted for Approval

8.6. Prototype Manufacturing and its Approval8.7. Bid Prices8.8. Warranty

ANNEXESANNEX-1: Type DrawingsANNEX-2: Bill of MaterialsANNEX-3: Schedule of Guaranteed CharacteristicsANNEX-4: Information FormANNEX-5: Type Numbers of Compact Substations


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TECHNICAL SPECIFICATIONFOR

COMPACT TYPE MV/LV DISTRIBUTIONTRANSFORMER SUBSTATIONS

WITH AIR INSULATED METAL ENCLOSED MODULAR CUBICLES

1. GENERAL

1.1. Subject and Scope

This specification covers the design, manufacturing and test conditions of externally operatedcompact type (not walk-in type) MV/LV Distribution Transformer Substations with a highestsystem voltage up to 36 kV (36 kV included) where the following equipment are utilised;

Air insulated metal enclosed modular cubicles (MMMH-air), as MV Switchgear andControlgear,

Distribution Transformers up to 1000 kVA rated power (1000 kVA included), as MV/LVDistribution Transformers.

The prefabricated/factory-built substations within the scope of this specification shall have afactory-built metal or concrete enclosure and shall be supplied completely with all the equipment(MV/LV Distribution Transformer, MV Cubicles, LV Panel, Fault Detection Equipment and otherauxiliary accessories) as assembled and tested in the factory.

Compact Type MV/LV Distribution Transformer Substations with Air Insulated Metal EnclosedModular Cubicles in the scope of this technical specification shall hereinafter be referred asCompact Substation.

1.2. Standards

All materials and equipment that shall be used for Compact Substation shall be manufacturedand tested according to the current revision of Turkish Standards (TS), InternationalElectrotechnical Commission (IEC) Standards and other standards.

TS STANDARDNUMBER

IEC, EN,ISOSTANDARD

NUMBERTHE NAME OF THE STANDARD

TS EN 61330 IEC 61330 MV/LV Prefabricated Transformer SubstationsTS 3033 IEC 60529 Classification of degrees of protection provided

by enclosuresIEC 60787 Application guide for the selection of fuse-links of

high voltage fuses for transformer circuitapplication.

TS 822 Galvanized Plain and Corrugated Steel Sheets(Hot-Dip Galvanized)

TS 914 Hot dip galvanized coatings on fabricated ironand steel articles - specification and test methods

ISO1459,1460,1461 Hot-dip galvanized coatings

ISO 4998 Continuous hot-dip zinc-coated carbon steelsheet of structural quality

TS 4313 ASTM D 3359 Paints and Varnishes Determination ofadhesion

ISO 4628/3 Paints and Varnishes evaluation of degradationof paint coatingsPart 3: Assesment of degree of rusting.

TS 3367 IEC 60439-1 Low-voltage switchgear and controlgearassemblies - Part 1: Type-tested and partially


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type-tested assembliesTS 500 Requirements for design and construction of

reinforced concrete structuresTS 2093 IEC 68-2-11 Environmental testing- Part 2: Tests Ka: Salt mistTS 267 IEC 60076-1 Power TransformersTS 5248 IEC 60298 A.C. metal-enclosed switchgear and controlgear

for rated voltages above 1 kV and up to and

including 52 kV

Other standards with equivalent or tighter requirements shall be accepted. The bidder shall submitwith the bid an English or Turkish copy of the applicable standard.

1.3. Regulations

The compact substations shall be manufactured and tested in compliance with the followingregulations:

Regulations for Electrical Power Installations Regulations for Earthing in Electrical Installations

1.4. Service Conditions

Unless otherwise specified in the Bill of Materials, the factory-built substations to be purchased shallbe outdoor type, suitable for use under the following conditions:

- Altitude : 1000 m.

- Ambient temperature (0C)

Minimum : - 25

Maximum : 40

Average over 24 hours : 35

- Ambient pollution : Yes

- Maximum solar radiation : 500 W/m2

- Relative humidity (%)

Minimum : 95

Maximum : 60

Average : 80

- Ice formation : Class 10, 10 mm

- Exposure to earthquakes

Horizontal acceleration : 0.5 g

Vertical acceleration : 0.4 g

- System earthing : Solidly or resistance earthed neutral system

2. DESIGN AND STRUCTURAL CHARACTERISTICS

2.1. Type

i) According to its operation, it is an externally-operated type,ii) According to enclosure, it shall be in

Concrete enclosed,

Metal enclosed

types.


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2.2. Arrangement and Dimensions

i) Types, compartments and dimensions belonging to the Compact Substations are shown inprincipal drawings given in ANNEX 1.

ii) All the equipment that shall be used in Externally Operatedsystems shall be placed in

three independent compartments arranged as follows. From these compartments;

MV Compartmentshall include the MV Metal Enclosed Switchgear and Controlgear.

Transformer Compartmentshall include the MV/LV Distribution Transformer.

LV Distribution Compartmentshall include the LV Distribution Panel.

Compartments shall be separated from each other by partitions defined in the principaldrawings.

iii) Shape, dimensions and colors of Compact Substations shall be harmonious to theenvironment and to the industrial esthetic scales.

iv) In the Compact Substations, incoming and outgoing of MV and LV cables coming fromunder the ground at a depth of 800 mm to the tank/base section from the sides, and

connections to the MV and LV equipment by achieving the minimum bending radiirequirement of single core MV and LV cables up to 1x240 mm2 cross section (240 mm2cross section is included)shall be possible.

The necessary watertightness shall be achieved after the entrance of cables to theTank/Base section. Necessary materials to achieve this requirement shall be provided bythe Manufacturer with the Compact Substation.

v) Concrete Enclosed Compact Substation shall be over the ground level in a mono-blockstructure, and its enclosure (Enclosure shall include the sidewalls, doors and ventilationpanels) shall be buried in the earth, and yet it shall be composed of Tank/Base Sectionhaving foundation function.

NOTE: In case that the dimensions of Tank/Base Section contained in the Mono-block

Structure do not comply with the requirements given above (Article 2.2.v), this requirementmay be achieved by another tank/base section manufactured in the factory. The assemblyof the section under consideration to the mono-block main unit in the field shall be doneunder the observation and responsibility of the Manufacturer.

Watertightness shall be achieved against leakages to the enclosure from the joints betweenthe main unit and the tank/base section. The Purchaser shall not make an additionalpayment for the operations defined in this section (NOTE Section).

vii) Metal Enclosed Compact Substation shall be composed of an enclosure made of metal. Theenclosure shall include sidewalls, doors and ventilation panels. Tank/Base section shall beprovided by the SUPPLIER that meets the requirements of the structure defined in Article2.2.v. This section can be made of concrete by formwork method in the factory, as well as inthe field. The quality of concrete used in the manufacturing shall be at least BS 35,according to TS 500.

The assembly of Tank/base section to the main unit in the field shall be under theobservation and responsibility of the Manufacturing. Water tightness shall be achieved onthe joint between the main unit (metal enclosure) and the tank/base section against waterleakages to the protection. For these operations, no additional payment shall be made bythe Purchaser.

viii) The floor covers of the MV compartment and LV Distribution Compartment shall bedismountable for cable connections to the MV cubicles and LV Panel, yet it shall be fixedfirmly not to injure the operating personnel due to the discharge of pressure that may occur


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during an internal arc. Floor cover shall be placed at least 10 cm above the ground level.There shall be no Floor Cover in the Transformer Compartment.

ix) Design of the compact substation shall ensure easy and safe fulfillment of regular service,

inspection, test and maintenance operations.According to this;

Normal operation works such as control of switching devices in the MV cubicles and LV

panels, measurements on the MV-LV input and output circuits shall be easily carried out.

All control and protection units shall be easily accessible.

Measurements and tests on MV and LV cables such as location of fault, checking ofphase sequence, dielectric tests shall be performed easily and safely.

x) Compact Substation, with all its equipment mounted, shall be suitable for land transport andshall have 4 lifting lugs or hooks at the bottom or at the top that allow easy lifting.

xiii) Transformer Compartment of the Compact Substation,

Shall be suitable to accommodate a 3 phase, having expansion tank, hermetic or dry typeDistribution Transformer up to 1000 kVA rated power (1000 kVA included) with a highest

system voltage of 36 kV.

Shall have oil sump or reservoir for possible oil leakages and flows from the oil typetransformers. Necessary precautions shall be taken to prevent leakage of oil from theenclosure to the soil.

Aperture in the rail axis of the transformer shall be adjustable for transformers havingdifferent rail apertures. (Rail apertures are 670 mm for transformers up to 630 kVA, and820 mm for 1000 kVA transformers (1000 kVA is included)).

2.3. Constructional Characteristics

2.3.1. General

Of the Compact Substation;

Its roof shall withstand minimum 250 daN/m load.

Including the covers providing the access to the tank section, the cover shallwithstand 500 daN/m load.

All the structure shall withstand to 300 daN/m internal and external pressure.

2.3.2. Constructional Characteristics of Metal Enclosed Substations:

i) The doors and the ventilation panels shall be made of hot dip galvanized steelsheets and having thickness at least 2 mm.

Zinc coating mass (the total amount of zinc on both surfaces of sheet of one squaremeter) of hot dip galvanized steel sheet shall be;According to TS 822, nominal value 381 g/m2 max. (the average of the triple

spot test shall be 275 g/m2), or

According of ISO 4998, coating designation shall be Z275 (the average of thetriple spot test 275 g/m2).

Steel sheets shall not be joined by electrical arc or oxygen welding; the methodswhich shall not cause damage to the galvanizing shall be preferred.


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ii) The enclosure shall be coated to 10 cm height from the ground level, with doublecomponent polyurethane acrylic based paint.

iii) The roof of the enclosure shall be thermally insulated.

iv) Unless otherwise stated in the Bill of materials, inner and outer surfaces of the metal

enclosure shall be painted with resin bonded powder coat of RAL 7032 color. The

thickness of the coating shall be 65 15 . The parts of the tank in contactwith the ground shall be coated with bitumen-latex emulsion.

2.3.3. Constructional Characteristics of Concrete Enclosed Substations

i) Design calculations and fabrication of concrete enclosures shall fulfill therequirements of TS 500. Concrete quality shall be at least BS 35 according to TS500.

ii) Pressure withstand test of concrete shall be carried out according to TS 3114 andthe results shall be evaluated according to TS 500.

iii) Connection of the Compact Substation between the roof and the enclosure shall bedismountable type. At the roof, there shall be eyebolts with screw or a similar

system convenient for lifting the roof with a crane.

2.4. Degrees of Protection

For accessing and contacting the live parts, as a measure against touching the moving parts,against dust and water, according to the IEC 60529;

Protection and ventilation panels shall provide a degree of protection IP23,

Wire fence that shall be located in (in case of its usage) shall provide a degree of protectionIP2X.

2.5. Water Tightness

The roof of the enclosure shall ensure a perfect water tightness and shall have adequate slopeto ensure self-draining. The measures shall be taken to prevent accumulation of water on thefloor and ingress of water through vertical surfaces.

2.6. Class of Enclosure

Enclosure Class of the Compact Substation that shall be purchased in the scope of thisspecification shall be 10.

2.7. Ventilation

Cooling of the Compact Substation shall be carried out by natural ventilation. Ventilation panelsshall be manufactured from sheet steel having at least 2 mm thickness and shall be hot dipgalvanized. Pre-prepared galvanized sheet steel may also be used, provided that the galvanize

coating should not be damaged during the manufacturing.

2.8. Doors and Locking Systems

i) The compartments shall have large enough doors (appropriate for entering and exiting ofthe device having the largest dimensions) with hinges that can be opened outwards and canbe locked. The doors shall be manufactured from galvanized sheets having at least 2 mmthickness.


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ii) The doors shall prevent entering in the closed position and shall not be able to bedismounted when they are closed. Door wings shall be strengthened by reinforcements fromthe inner side for the required strength.

iii) The doors shall be opened in a way not to hinder the operation and shall be equipped by astopping arrangement strong enough for the wind pressure, and maintaining the openposition at least 120.

iv) The lower edge of the doors shall rest at least 10 cm above the ground level when thesubstation is mounted.

v) All locks of the doors shall be unremovable from the outside and shall be locked by a singlekey. In the locks, bearing systems shall be used and they shall be locked at three differentpoints.

vi) Even if the doors are locked from outside, they shall be opened from inside easily by a latchor a similar arrangement, without using a key.

vii) Door arms and locking system shall be manufactured such that rain or snow water cannotreach to the lock. Besides, there shall be an arrangement to mount a padlock whennecessary.

viii) Doors in the closed position and ventilation panels shall withstand a 20 Joule mechanicalshock (IK 10) from inside and outside.

2.9. Installation of Equipment

i) No equipment in the Substation shall be installed below the ground level.

ii) Items of hardware used in the fixing of equipment shall be produced from rigid and corrosionresistant materials or from materials protected against corrosion and all the equipmentshould be able to be fixed with the same type of material. replacement of these materials inthe field should not necessitate a special device.

iv) Method of fixing of equipment shall ensure them to remain in place without any damageagainst mechanical shocks and vibrations coming from the outside where the substation is

placed and against forces emerging during the operation or transportation.

v) In the placement of transformer, load distribution shall be taken into consideration andnecessary measures shall be taken to prevent slipping.

vi) When the doors of the related compartment of Compact Substation are open, covers of LVcompartment of MV Cubicles shall be opened completely.

2.10. Internal Arc Withstand

The whole structure of the Compact Substation (enclosure, doors, ventilation shutters, etc.) shallwithstand the internal arcs that may result from the internal faults that may occur in the MV or LVEquipment.

3. ELECTRICAL EQUIPMENT

3.1. Distribution Transformer

Technical characteristics of the transformer that will be used in the Compact Substations shallcomply with the Purchasers relevant technical specifications.


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Nameplates having technical characteristics of the distribution transformer and terminal boxshall be on the transformer such that, it can easily be seen and accessible when the door of thecompartment is opened.

The maximum dimensions of the distribution transformer that will be used in the CompactSubstations are explained in the principal drawings.

NOTE: Unless otherwise stated in the Bill of Materials, HV bushings complying with EN 50181standard shall be used in oil type distribution transformers (with expansion tank and hermetictype transformers) and the connection shall be made by screened type separable connectors.

3.2. MV Metal Enclosed Switching and Control System (MV Cubicles)

Complying with the Purchasers relevant technical specification, Air Insulated Metal EnclosedModular Cubicles (MEMC-air) shall be used as MV Metal Enclosed Switchgear andControlgear in the Compact Substation.

NOTE: MV Fuse that shall be used on the Switch Fuse Combination allocated as a transformerfeeder shall be selected by the Bidder/Manufacturer, considering the matters in IEC 62271-103.

3.3. LV Distribution Panel

Unless otherwise stated in the Bill of Materials, LV Panels complying with the Purchasersrelevant technical specification shall be used in the Compact Substation.

3.4. Internal Cable Connections

i) Unless otherwise stated in the Bill of Materials,

Transformer Protection Cubicle composed of Switch-Fuse Combination shall be used atthe primary side of the MV/LV Distribution Transformer (at the high voltage side).Connection between the Transformer Protection Unit and Distribution Transformer shallbe made by 50 mm cross section, single core XLPE insulated cables with copperconductor.

Indoor type terminations/sealing ends shall be used at the incoming/Outgoing connectionsof the cubicles. The terminations to be used shall comply with the Purchasers relevanttechnical specification.

The connection between MV/LV Distribution Transformer and LV Panel shall be madeby single core, PVC or XLPE insulated cables with appropriate length having 240 mm

2

copper conductor cross section. The number of cables per phase shall be determined bythe Bidder. Neutral line conductor cross section shall be the same as the phase lineconductor cross section.

ii) The cables shall be fixed with necessary fixing arrangement, after the LV and MVconnections are made. Materials that shall be used in the fixing arrangement shall haveantimagnetic property.

iii) Precautions shall be taken against accidental touching to the live parts at bothDistribution Transformer and LV Panel terminals.

NOTE: Busbar connection may also be used between the Transformer and LV Panel ifit is stated in the Bill of Materials.

3.5. Earthing System:

i) Earthing system shall be installed complying with the related standards and regulations.


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ii) Metal enclosures and their intermediate partitions, steel frame of the Compact Substationwith concrete enclosure, covers and doors, chassis of the equipment belonging to the maincircuit, transformer tank, LV panels frame and enclosure, metal shields of the cables and allmetal parts intended to be earthed shall be connected to a Equipotential Bonding Bus-bare through a protective conductor,that shall be established in the enclosure at a placethat can easily be seen and accessible.

Protective conductor shall be copper and the cross section of the conductor shall becalculated as to carry 160 A/mm value of current density, provided that it shall be at least35 mm.

Outer earthing connection of the protection circuit shall be made by the Purchaser in thefield over the Equipotential Bonding Bus-bare

iii) Continuity of the earthing system shall be achieved taking into account the thermal andmechanical stresses due to the current that should be carried in general.

3.6. Internal Lighting

Compartments of the Compact Substation shall be internally and individually illuminated and atleast 250 lux of illumination level shall be ensured. (For emergency internal illumination, it shallnot be necessary to provide 250 lux of illumination level). For illumination, at least 1.5 mm

2cross

section, multi-wire, 750 V class thermoplastic insulated, having thermal and flame endurancecopper conductor wires shall be used.

3.7. Battery Rectifier Group (If required in the Bill of Materials)

In the Compact Substation, there shall be a constant voltage, automatically regulated currentlimiter type semiconductor rectifier which shall always be connected to the Direct Current(DC) load, and dry type Batteries which do not require maintenance and shall be charged withand always connected to this rectifier. Hereinafter, this group is called as Battery-RectifierGroup.

When the AC power is interrupted, Internal Emergency Illumination Lamps, Failure DisplayLamps, Spring Protection Motors in the MV Cubicles, Relays and Signal Lamp Box shall be fedfrom this Accumulator/Accumulators group.

When Internal Emergency Illumination Lamps and Failure Display Lamps operate, theseaccumulators shall be capable of feeding for at least 4 hours.

The nominal output voltage of the Battery-Inverter Group shall be indicated by the Purchaser inthe Bill of Materials.

3.8. Protection Control and Signalization System

Protection Control and Signalization System of the Compact Substations shall be performed bythe Manufacturer. The relevant electrical schemes shall be given with the Bid.

3.8.1. Protections belonging to MV/LV Distribution Transformer

The necessary control and alarm system shall be installed for alarm and trip signalsto be taken from either self protection of MV/LV Distribution Transformer (BuchholzRelay, Hermetic Protection relay, Thermometer with Double Contactor, Oil LevelIndicator, etc.) or thermal relay, etc. protection and control devices.

3.8.2. Fault Detection Equipment(FDE)

Fault Detection Equipment shall comply with the Purchasers relevant technicalspecification.


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Fault Detection Lamp as a part of the FDE, shall be placed at a visible place andoutside of the Compact Substation.

A catalog related to the Fault Detection Equipment which is intended to be installed inthe transformer substation shall be given with the Bid.

NOTE: In case of more than 1 (one) FDE are required, this case shall be indicated in

the Bill of Materials.

4. NAMEPLATES AND DANGER NOTIFICATIONS

Compact Substation shall be equipped with nameplates, danger notifications, wiring diagrams,operating instructions and emblem defined below. Plates, signs and writings shall be located at easilyreadable and seen places.

Nameplates shall be manufactured from corrosion resistant materials and shall be attached withstainless screws or pins. Writings shall be legible, and shall not be erased or discolored by outsideeffects.

i) On the doors of the enclosure, there shall be

Danger of life sign,

A warning writing indicating that approaching is dangerous and forbidden.

ii) At the nameplate that shall be placed on one of the outer surfaces of the enclosure, there shall be

Manufacturers name,

Year of manufacture,

Type, rated voltage and serial number,

The Purchasers Order Number and the Material Code number.

iii) In the Compact Substation,

Nameplate including information indicated in item (ii) above and rated values,

Electrical scheme related with protection control and signalization system (x), MV and LV Single Line and Connection diagram (x),

Operating instructions (x),

LOAD FACTOR CURVE for Protection Class: 10 for Oil and Dry Type DistributionTransformers (xx).

(x) : Shall be put as coveredwith nylon in the pocket to be made on the inner side of the cover.(xx) : Load Factor Curve shall be drawn on an aluminium plate, and the plate shall be attached by

pin or other similar manner on the wall or at the inner side of the compartment door which canbe seen easily.

5. ANTICORROSION PRECAUTIONS

5.1. General

Following precautions shall be taken against corrosion:

All surfaces shall be self-draining wherever practicable.

Metallic parts shall be manufactured from corrosion resistant materials and their surfaces shallbe finished in such a way that corrosion is minimized.

Materials and combinations of materials used in the construction of the equipment shall beselected and arranged to prevent galvanic corrosion.


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Surfaces to be protected from the corrosionshall be smooth, not damaged, clean, and clearfrom foreign material effecting the lifetime of the coating.

5.2. Painting

The Manufacturer shall give the details relevant to the applicable painting method, type of paint;the color coating thickness and other characteristics of the paint in the Bid.

During the painting operation of the metal surfaces;

i) They shall properly be cleaned out by methods such as sandblasting, chemical cleaning,phosphating etc. as foreseen by the relevant standards.

ii) Quality of painting shall be determined by checking the thickness and adhesion of thecoating. The tests prescribed in the standards shall also be performed.

iii) Thickness of the painting shall be measured by a paint inspection gauge at five pointschosen at random. The average thickness shall not be less than the value indicated by theManufacturer.

iv) Adhesion of the paint coat shall be checked at five points chosen at random by the adhesive

tape tests as per TS 4313/ASTM D 3359. The degree of adhesion shall not be worse thanClass-4 specified in these standards.

During the painting of concrete enclosure;

i) Outer surfaces;

Shall first be coated with silicon based mastic for outer surfaces,

Then, shall be painted by priming paint,

To make deterrent addicting bill, advertisement, etc. to the priming enclosed surfaces, itshall be painted with rough silicon based last coat outer front painting.

ii) Surfaces of the tank section contacting to the earth shall be coated with bitumen-latexsolution.

The SUPPLIER shall warrant the paintings of metal surfaces and concrete enclosure for aperiod 3 years.

5.3. Galvanizing

Except pre-manufactured galvanized steel sheets used in the production of the doors and otheraccessories etc. belonging to the Compact Substation, the other galvanizing operations andtests on the galvanized surfaces shall be carried out according to ISO 1459, 1460, 1461 and TS914 standards. Unless otherwise stated, thickness of galvanize coating shall be according to TS914 Table-1.

Hot dip galvanizing of metal parts, including the threads of bolts and screwed rods shall becarried out after all machining, bending, cutting, drilling, punching, marking and weldingoperations have been carried out. Surfaces to be galvanized shall be cleaned out by sandblasting, chemical cleaning or other methods.

Small parts that cannot be painted or hot dip galvanized shall be made of stainless steel atoutdoor parts, and electro-galvanized or made of stainless steel at internal parts. Electro-galvanize thickness shall not be less than 12 micron and after galvanization, passivationprocess shall be done by using an appropriate method.

6. INSTALLATION IN THE FIELD


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i) Erection on site of the prefabricated substation shall require little work. The works to be carried outby the Purchaser on site shall be restricted to:

Excavating and leveling Preparation of earthing system Covering of the bottom of the foundation pit with sand or concrete according to the

characteristics of the ground. (In case the foundation pit is poured concrete, sand shallbe spilled on the base concrete to prevent contact between concrete with concrete.) Placement of the transformer into the substation and affecting the MV and LV

connections. External electrical connections.

Construction of pavements around the enclosure (if required).

ii) Compact Substation shall be commissioned on approval of the Manufacturer after his inspectionon site following the installation of the substation. For this, the Bidder / Manufacturer cannot claimfor any charge.

7. TESTS

7.1. Type Tests

Type Tests to be carried out on the Compact Substations are as follows:

i) Temperature Rise Test,

Temperature Rise Test shall be performed as indicated in TS 61330/ IEC 61330.

ii) Mechanical Load Withstand Test,

- In order to verify the withstand of the enclosure; a mechanical load of 250 daN/m2 evenlydistributed throughout the whole area of the roof, shall be applied. Any irreversibledamage shall not be observed at any part of the enclosure and the doors and locks shallfunction correctly during and after the test.

- To verify withstand, to an internal and external mechanical shock of 20 J, of the doors atclosed position and the ventilating panels; a hammer of 5 kg weight shall be dropped froma height of 0.4 m. The test shall be applied to various points of the roof, to sidewalls, tothe doors at closed position and to ventilating panels. After the test, the degree ofprotection of the substation and proper functioning of doors and locking systems shall notbe damaged.

At the end of test, the degree of protection of the enclosure and proper functioning of doorsand locking systems shall not be damaged.

iii) Verification of Degree of Protection,

The test shall be performed according to IEC 60529 and it shall be verified tat the enclosureensures the degrees of protection required in Sub-clause 2.6 of this specification.

iv) Internal Arc Test,

Internal Arc Test shall be carried out at 36 kV voltage level, according to TS EN 61330considering accessibility types A and B, by making a 16 kA internal arc fault at the CableConnection Compartment with 1 second duration. Results of the test shall meet all thecriteria given in the relevant standard. Test results shall be valid for the other voltage andMV cubicles arrangements having the same arc discharge.

v) Measurement of Thickness of Galvanize Coating,


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Coating thickness of the pre-prepared galvanized steel sheets used in the manufacturing ofthe enclosure shall be measured according to TS 822/ISO 4998, and coating thickness ofthe other hot dip galvanized material shall be measured according to TS 914.

vi) Tests of Paint Coating on Metallic Surfaces

- Measurement of Thickness of Paint Coating

Thickness of the painting shall be measured according to the Sub-Clause 5.2 of thisSpecification.

- Adhesion Test

The test shall be carried out according to TS 4313/ASTM D 3359.

- Salt mist testThe test shall be carried out according to IEC 68-2-11. Test duration is 720 hours (30days). The degree of rust formation observed after the completion of test period shall notexceed Ri1 as designated by ISO 4628/3.

- Abrasion TestThe test shall be carried out according to ASTM D 968. The quantity of sand, necessaryfor abrasion of coating, shall be at least 75 liters.

vii) Earthquake Withstand Test against (It shall be carried out only for compact substations withconcrete enclosures. Methods based on calculations shall also be accepted.)

7.2. Routine Tests

i) Voltage Tests on Auxiliary Circuits,ii) Functional Tests, (It will be proved by these tests that all necessary activities related to duty,

operation and maintenance of the substation are possible).

Operation of the switchgear and controlgear (MV cubicles),

Operation of the doors and locking systems of the compact substation,

Checking of insulating barriers and measures taken against accidental touching in LVcompartment,

Checking of temperature and oil level of the transformer,

Checking of appropriateness of the earthing arrangements,

iii) Checking the correcness of conductor connections and protection-control system,

7.3. Acceptance Tests and Provisions

7.3.1. Sampling and Acceptance Tests

7.3.1.1. Sampling:

Acceptance tests shall be carried out on all compact substations in the scope ofdelivery presented to acceptance.

7.3.1.2. Acceptance Tests:

Type Tests described in Sub-Clause 7.1 (according to Sub-Clause 7.3.3.i)

Routine Tests described in Sub-Clause 7.2,

Visual and manual inspections, checking of dimension.

Acceptance tests for the materials to be used in the Compact Substation shallbe carried out according to the rules indicated in the relevant TechnicalSpecifications. Before the acceptance tests of the materials under


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consideration, information shall be given to the Purchaser, and if the Purchaserrequires, he will ensure the participation of representatives in the tests.

7.3.2. Acceptance Criteria

i) Positive result shall be taken from all type tests. In case of negative results of typetests, if the Purchaser concludes that the Compact Substations operating safety

shall be lost, he may reject all the units of the same type and having the sameproperty. The Purchaser, at its unobjectionable judgement, may accept therepetition of the tests, if the Supplier proposes to modify, within a reasonable periodof time, the design of the compact substations and to repeat, at its own expense, alltype tests required by the specification.

ii) Positive results shall be taken from all routine tests and visual and manualinspections.

7.3.3. Provisions For Acceptance Tests

i) In case that the type test reports are not submitted or the submitted reports are consideredto be inadequate, all or some of the type tests described in Sub-Clause 7.1. as indicated inthe Bid shall be carried out at the manufacturers premises or in an independent laboratoryin Turkey or abroad at the suppliers expense.

If it is stated in the Contract that some of the type tests shall be conducted abroad, otheracceptance tests will be not started unless positive reports of the tests performed abroadare submitted to the Purchaser.

The Supplier will not claim for time extension due to delays in delivery caused by

performance of the type tests.

No payment shall be made to the Supplier prior to obtaining the results of the acceptancetests.

ii) Even if the type test reports submitted with the bid are found satisfactory or positive resultsare obtained from the type tests performed during acceptance tests of the first partydelivery, the Purchaser, may, at its own discretion, request the repetition of all or some oftype tests at the first lot delivery or subsequent deliveries at the Manufacturers facilities or inan independent laboratory in Turkey or abroad.

For the type tests to be carried out in Turkey or abroad, the required number of samples bytests/standards shall be selected by the Purchasers representatives. For the type tests tobe carried out at abroad, the sample(s) shall be sealed, and shall be sent by theManufacturer to the laboratory in which the test shall be carried out.

In case positive results are obtained from these tests, all the costs will be paid by thePurchaser as TL considering the type test prices given in the Contract. If the test prices arequoted in foreign currency, they will be converted to TL considering the foreign currencyselling rate of the Central Bank of the Republic of Turkey, valid on the test date.

In case negative results are obtained from the tests, all the costs of tests shall be paid bythe Supplier and remaining part of the order shall be cancelled.

7.3.4. Acceptance Procedure

i) The Purchaser shall have the right to inspect and/or to test the Goods at the premises of theSupplier or its Subcontractor(s), at point of delivery and/or at the Goods final destination.The Supplier shall furnish to the Purchasers representatives all facilities and assistance forinspections and tests.

ii) The Supplier shall submit to the Purchaser the test and inspection program after signing the


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Contract. The Supplier shall notify the Purchaser at least 20 (twenty) days in advance of theactive date of the beginning of the tests to be performed abroad, and 7 (seven) days inadvance for the tests to be performed in Turkey.

iii) It is essential that all routine tests shall be performed at the Manufacturers premises. Duringthe acceptance tests, if the Manufacturer fails to perform any test that was stated in theContract to be conducted at the Manufacturers premises, he will make all provisions to

perform such tests within 15 (fifteen) days of the date of commencement of the acceptancetests.

Otherwise it shall be concluded that the goods are not ready for acceptance. The date of thedelayed tests shall be accepted as the delivery date, provided that the test results aresubmitted to the Purchaser within 7 (seven) days. However, the Purchaser reserves theright to implement the relevant terms of the Contract, concerning the delay.

iv) The tests shall be carried out with the attendance of the Purchasers representatives. Thetest reports shall include the serial number(s) of the sample(s) and the informationnecessary for identification of all main parts of the samples. The test reports shall be soarranged that the compliance of the goods to this specification and its attachments shall beclearly stated, and then countersigned. In case of positive results of tests, a Release Notefor the shipment of relevant party of goods shall be given by the Purchasersrepresentatives.

If a clear decision concerning the test results cannot be reached by the Purchasersrepresentatives, they may leave the decision to the General Management.

The Purchaser may not wish to be represented at the tests by notifying the Supplier in duetime. In this case, the Supplier shall proceed with the tests and submit the test results to thePurchaser. The test reports thus prepared and signed by the Supplier shall be sent to thePurchaser in 8 copies for check and approval. If the test reports are approved, thePurchaser shall issue a Release Note for shipment and return 2 approved copies of the Test

Report to the Supplier.

If the tests are not witnessed by the Purchasers representatives, the samples shall beresealed by the laboratory after completion of the tests and then shipped back to theManufacturer. The samples shall be examined by the Purchasers representatives, at the

Manufacturers premises.

v) The Purchasers right to inspect, test, and where necessary, reject the Goods after the Goodsarrival in the final destination shall in no way be limited or waived by reason of the Goodshaving previously been inspected, tested and passed by the Purchaser or its representativeprior to the Goods shipment.

vi) Nothing in this clause shall in any way release the Supplier from any warranty or otherobligations under this Contract.

8. MISCELLANEOUS CONDITIONS

8.1. Transportation

i) It is essential that the Compact Substations are transported in a mono-block structure withall their equipment mounted. However, due to the reasons emanating from transportationheight and weight, it is allowed that the roof that is not part of the enclosure and thetank/base section (in case it is manufactured separately), may be transported separatelyfrom the enclosure. In this case;

- Necessary measures shall have been taken against damages during the transportation ofequipment mounted in the mono-block main unit.

- Roof and tank/base sections and mono-block enclosure (main unit) shall be assembled bythe Manufacturer in the erection place. For these operations, no additional payment will bemade by the Purchaser.


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ii) Necessary measures shall have been taken against effects on Compact Substation andequipment contained, such as mechanical shocks and vibrations during all kinds of loading,transportation, unloading and long-term storage.

Moving or removable parts shall be secured reliably during the shipment.

8.2. Spare Parts

3 (three) MV fuses shall be given as spare together with each Compact Substation.

The spare parts indicated in the relevant Technical Specifications shall not be requestedseparately.

8.3. Special Tools and Test Devices

The Bidders shall submit the list of special tools and test devices required for erection,maintenance and adjustment of the Compact Substation and the components therein with theirBids and shall deliver such equipment with the Compact Substations.

In case it is demanded by the Purchaser at the desired time and place, arrangement (sling,yoke, etc.) necessary for the loading and unloading of the Compact Substation shall be providedby the Manufacturer and shall be sent to the Purchaser as a return (all the expenditures forthese shall be covered by the Manufacturer).

8.4. Documents to be Submitted with the Bid

i) Unless otherwise stated in the Contract Documents, The bidders shall submit with their bidsfollowing documents for air insulated MV Metal Enclosed Modular Cubicles (MEMC-air),MV/LV Distribution Transformer andLV Panel to be used in the Compact Substation.

ISO 9001 or ISO 9002 Quality System Certificate, ISO 14000 Environment ManagementSystem Documents (in case it is required in the technical specification related to theequipment) belonging to the Manufacturer,

Type test reports (Tests should have been carried out in an independent laboratory orunder the observation of TEDA/TSE personnel),

TS Certificate (For the equipment in the scope of mandotory standard),

Reference list,

Catalog,

Schedule of Guaranteed Characteristics (Shall be filled for each material separately).

ii) Unless otherwise stated in the Contract Documents, The bidders shall submit with their bidsfollowing documents, for each item (type) of Compact Substation offered.

ISO 9001 or ISO 9002 Quality System Certificate belonging to the Manufacturer,

Type test reports (Tests should have been carried out in an independent laboratory orunder the observation of TEDA/TSE personnel),

Certificate of Conformity to TS (For the equipment in the scope of compulsory standard),

Reference list,

Catalog,

In addition;

The complete diagram of installation showing the position each compartment,

Drawings of base/tank section of the Compact Substation showing that the CompactSubstation satisfies the minimum bending radius for MV cable of 1x240 mm2 crosssection,


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Drawings including particulars such as dimensions of the Compact Substation and itscompartments, location of the equipment, position of the ventilation panels and their crosssections, etc.

Detailed drawings related to locking systems of the doors,

Single line diagram (MV and LV separately)

Electrical schematics of protection, control and signalization system,

The largest dimensions and highest transportation weight of Compact Substations,

MV and LV connections, transformer connections, Instructions for transportation, storage, mounting and taking into operation,

Measures to be taken against internal arc.

iii) Bidders are required to fill in and sign the attached Information Form and the Schedule ofGuaranteed Characteristics for each item they offer and enclose one copy of each with their

bids. Information given in these schedules shall be binding.

iv) The Bidders failure to submit any of the documents or drawings required herein or anymissing data may entitle the Purchaser to reject the bid.

8.5. Documents to be submitted for Approval

After the signing of the Contract, the Supplier shall submit the following documents for approval

within the time limits specified in the Contract:

Single line diagram of Compact Substations,

Electrical schematics of protection, control and signalization systems,

Drawings, (dimensions of the Compact Substation and its compartments, location of theequipment, position of the ventilation panels and their cross sections, etc.)

Drawings showing positions and cross sections of cable entrances,

The largest dimensions and highest transportation weight of Compact Substations,

Nameplates

8.6. Prototype Manufacturing and its Approval

In case the Purchaser requests Prototype Manufacturing, before the commencement of theserial manufacturing of concrete or metal enclosures, the Manufacturer shall submit to the

inspection and approval of the Purchasers representatives, a prototype of the substation to besupplied complete with its equipment and materials as mounted. Manufacturing shall be startedafter the approval. The Bidders shall take into account that delivery schedule included in thebidding documents shall also cover the prototype approval period.

Delays in approval of the prototype caused by the fault of the Manufacturer shall not constitute abasis of a demand of the Manufacturer for an extension of time for completion.

8.7. Bid Prices

The bid prices shall be quoted according to the Bidding Specifications.Bid unit prices shall include,

- The complete Compact Substation with all its equipment included,

- Acceptance tests,- Spare Parts (as indicated in Sub-Clause 8.2),- Special Tools and Test Devices, if any (as indicated in Sub-Clause 8.3)

The Bidders shall separately quote,

- Unit price of each of the type tests in the technical specification, (including all expenses suchas transportation, insurance, etc.)

- Unit prices of other spare parts that are required in the Bill of Materials.


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8.8. Warranty

i) The supplier shall warrant that each compact substation and the equipment containedtherein of the supply shall have no defects arising from design, materials or workmanship,for a period of 24 months after the date of delivery.

Should the Compact Substation and the equipment contained therein have defects or

become defective due to design, materials and workmanship within the warranty period, andsuch defects may not be locally remedied, the Supplier shall act, at his own expense, fordismantling, transportation to the Manufacturers premises, repair, transportation to thedestination to be indicated by the Purchaser after repair and mounting as necessary, of thegoods.

The Supplier shall deliver the defective goods to the Manufacturers premises within 15 daysof the date of the written notice, and shall deliver the repaired goods to the destination to beindicated by the Purchaser within 15 days of the date of the completion of the tests.

If the Supplier fails to comply with such delivery terms, or, if the Supplier, having beennotified, fails to remedy the defects, the Purchaser shall proceed to take such remedialaction as may be necessary at the Suppliers expense. In this case the Purchaser shallcollect the costs and expenses from the earnings or performance security of the Supplier.

Material that is repaired or replaced in this manner shall also be covered by the samewarranty stipulations.

ii) After the conclusion of the Warranty Period, the Supplier shall warrant to provide the sparesof the equipment used in the cubicles and furthermore to conduct, if required by thePurchaser, maintenance and repair works of the substation and the equipment used therein,at the Purchasers expense, during a period of 10 (ten) years starting from the date ofdelivery.

iii) All surface coatings of the Compact Substation shall be warranted for normal conditions ofuse (excluding the defects arising from accidental scratches, strikes, etc.) for a period of 3(three) years starting from the date of delivery.

iv) At the end of the Warranty Period specified in paragraph i) above, before the performance

security is released, the Supplier shall submit to the Purchaser a written undertaking for hisobligations, stated in paragraph ii) and iii) above regarding the surface coatings, supply ofspare parts and conducting the maintenance and repair work.


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ANNEX 2

BILL OF MATERIALS

File No:........................

POS NORequired Guaranteed

1 Compact Substation Type Number

2 Enclosure (Metal / Concrete)

Rated Power (kVA)

Rated Voltage (kV)

3

MV/LV

Distribution TransformerType

With expansion tank,

Hermetic,

Dry

MV Cubicle Rated Voltage (kV)4

MV Cubicle Arrangement 1

5 LV Distribution Panel2

6 Battery Rectifier Group (Yes/No)

If Yes, DC Voltage

7 Fault Detection Equipment (Yes/No)

8 Screened type separable connectors at the MV/LVDistribution Transformer Connection (Yes/No)

9 Connection between LV Panel and MV/LV DistributionTransformer (Cable/Busbar)

10 Material Code Number

11 Quantity (ea.)

12 Spare Parts (Materials to be required as spare partsshall be written to this column.)

13 Color of the Compact Substation

14 Prototype Manufacturing (Yes/No)

NOTES

1CUBICLE CODES FOR MV CUBICLE ARRANGEMENT

LV Voltage Current Measuring CubicleSY Switch-Fuse Combination of TransformerProtection Cubicle G Voltage Transformer Cubicle

Y Incoming/Outgoing Cubicle with Switch K Busbar Connection (Coupling) CubicleKe Incoming/Outgoing Cubicle with Circuit

Breaker

BY Bus Rising Cubicle

Ka Incoming/Outgoing Cubicle with Cable Ke1 Bus Division with Breaker CubicleA Incoming/Outgoing Cubicle with

DisconnectorY1 Busbar Connection Cubicle with Switch

EXAMPLE: 2Y+1SY (2 Incoming Cubicle with Switch and 1 Switch-Fuse Combination of TransformerProtection Cubicle)

2Panel code shall be indicated.


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ANNEX 3

SCHEDULE OF GUARANTEED CHARACTERISTICS

File No :Pos No :Material Code No :

REQUIRED GUARANTEED

1. GENERAL1.1. Manufacturer :1.2. Manufacturers Type Designation :1.3. Rated Power of the Transformer (kVA) :1.4. Rated Frequency (Hz) : 501.5. Rated Voltage

.MV (kV) :

.LV (V) : 231/400

2. ENCLOSURE

2.1. Galvanized Steel Sheet Enclosure

2.1.1. Sheet Thickness (minimum) (mm).Roof : 2.Walls : 2.Intermediate Partitions :

2.1.2. Floor Coverage Material2.1.3. Painting

. Painting method : Electrostatic spraying

. Type of the Painting : Resin based powderpaint

. Coating Thickness (micron) :

. Painting Color :

2.2. Concrete Enclosure

2.2.1. Concrete Class(minimum, according to TS 500)

: BS 35

2.2.2. Thickness (mm) :.Roof.Walls :.Intermediate partitions :.Tank floor :

2.2.3. Floor Coverage Material :2.2.4. Properties of the Coating

.Outer Surfaces : Silicon based outersurface coating

.Outer surface paint color :2.2.5. Doors and ventilation panels

.Material :

.Coating / paint color :


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2.3. Mechanical Withstand (minimum).Roof (daN/m) : 250.Floor (daN/m) : 500. Doors and ventilation panels : 20 joule

2.4. Degree of Protection : IP 232.5. Enclosure class 10

2.6. Outer Dimensions (mm). Length :. Width (maximum) : 2550. Height (Over the ground level) :

2.7. Total Area (m) :2.8. Transportation Weight (kg)

(with all its equipment):

2.9. Transportation dimensions (mm). Length :. Width : 2550. Height :

NOTE: The Bidders shall fill in the Schedule of Guaranteed Characteristics in the relevantTechnical Specification for the equipment they will use in the compact transformer substation.


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ANNEX 4

INFORMATION FORM

File no: ..Pos no: ....................

ORDERNO

MATERIAL NAMEMANUFACTURERS

NAMETYPESIGN

1 ENCLOSURE

2 MV/LV DISTRIBUTION TRANSFORMER

MV CUBICLE

Cubicle 1

Cubicle 2

Cubicle 3

3

Cubicle 4

4CABLE SEALINGEND

For Dis.Trf. MV side

Trf. Feeder at the MV cubicle

5a LV DISTRIBUTION PANEL

5b LV SWITCH

6 MV FUSE

7 BATTERY RECTIFIER GROUP (if required)

8 FAULT DETECTION EQUIPMENT (if required)


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TYPE NUMBERS OF COMPACT SUBSTATIONS ANNEX 5

MV/LV

DISTRIBU

TION

TRANSFO

RMER

TYPE-1

MV/LV

DISTRIBU

TION

TRANSFO

RMER

TYPE -2

TYPE-2/H TYPE-2/T

NOTE: In case only one unit is required, one unitshall be able to be obtained by indicating the TypeNumber (TYPE-2/H, TYPE -2/T).

NOTE: Details and dimensions of the Compact Substation are indicated in the

principal drawings.

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