Product brochure UniGear 550 Medium voltage, arc-proof ... · Medium voltage, arc-proof,...

UniGear 550Medium voltage, arc-proof, air-insulated,metal-clad switchgear

Product brochure

2

Contents

Description04 Applications

Air-insulated05 Normal service conditions

05 Standards

05 Electrical characteristics

Metal-clad06 Compartments

06 Main busbars

06 Branch connections

06 Earthing switch

06 Earthing busbar

06 Insulating bushings and shutters

06 Cables

06 Gas exhaust duct

Safety07 Interlocks

07 Padlocks

07 Locking magnets

Type tests08 Temperature rise

08 Dielectric

08 Apparatus making and breaking capacity

08 Earthing switch capacity

08 Mechanical operations

Arc proof09 Vacuum circuit-breakers-Vmax

09 Insulating monobloc

Vacuum circuit-breakers11 Vacuum circuit-breakers-Vmax

11 Insulating monobloc

11 Operating mechanism

11 Truck

11 Apparatus-operator interface

12 Standards

Uses and features13 Block-type CTs

13 Bushing-type current transformers

13 Earthing switch ST1-UG

Feeder protection14 General

14 Applications and features

15 Recommended products

Transformer protection16 General


Motor protection17 General



Communication19 General

19 Utility applications IEC 61850

19 SPA

19 LON

19 IEC 60870-5-103

19 DNP V3.0

Industrial applications20 Profibus DP V1

20 Modbus

20 OPC

Arc protection

21 General



22 Selection guide

REF542plus multifunction protection and control unit23 Hardware

23 Machine-user interface

23 Central unit

24 Communication

24 Synchronization

25 Automatic transfer systems

Typical units and technical data26 Single-line diagram of the typical units

27 Single-line diagram of the busbar applications

27 Graphical symbols

27 Technical data

Main connection example29 Incoming/outgoing-bottom cables

31 Incoming/outgoing-top cables entry (depth: 1650 mm)

33 Incoming/outgoing-top busbar entry (depth: 1650 mm)

35 Bus-tie

36 Measurement

37 Measurement (VTs)

39 Bus-riser

Contens I UniGear 550

3UniGear 550 I Description

Description

The UniGear 550 can be positioned against the wall. This

in turn allows all service and maintenance operations to be

carried out directly from the front.

Accessing the cable area is particularly convenient by simply

removing the base of the circuit-breaker compartment.

As a standard solution, it is possible to connect up to three

singlepole cables per phase (with a maximum cross-section

of 185 mm2 per panel up to 1250 A and 500 mm2 per panel

up to 2000 A) or two cables per phase with a maximum cross

section of 300 mm2 per panel up to 1250 A and 800 mm2 per

panel up to 2000 A).

The connection height of the cables in relation to the floor

should be 600 mm for the panel up to 1250 A and 565 mm

for the 1600 A and 2000 A panels.

As standard solution UniGear 550 uses toroidal current

transformers (CTs) which are fixed onto a “CT Rod". As an

optional solution, the transformers can be fixed on a DIN rail.

The panel design is such that fixed voltage transformers (VTs)

can be inserted into the front of the panel. The capacitive

signal for indicating the voltage present is connected directly

to the insulators which support the busbars on the cable side.

The surge arresters can also be inserted in the cable area.

The UniGear 550 switchgear is fitted with the interlocks and

accessories needed to guarantee top level safety and

reliability, both for the installation and the operators.

It has undergone all the tests required by the international

standards (IEC) and local standards (for example the GB,

Chinese and Russian GOST standards).

The UniGear 550 switchgear panel is the latest product to join

the large family of UniGear products. UniGear 550 mirrors all

the construction characteristics of other UniGear standard

panels.

UniGear 550 can support a maximum panel current of 2000 A and

it is designed to accommodate ABB Vmax/L circuit breaker.

One of the most unique aspects of this panel is its size. It only

measures 550 mm in width, making it a very compact and

versatile product.

It has been built so that it can be connected directly to the

UniGear standard panel. In fact, it has the same overall

dimensions (height and depth) and the same omnibus

busbars, allowing it to handle a maximum current value of up

to 4000 A.

4

Description

ApplicationsBusiness services, public and civil buildings■ Shopping malls

■ Supermarkets

■ Telecom building

■ 0ffice buildings

■ Banks

■ Hospitals

■ Sports grounds

■ Playgrounds

■ Residential areas

■ Large infrastructures and civil works

Light industrial applications■ Machinery

■ Automotive products manufacturing

■ Electronics

■ Communications products processing

■ Tobacco

■ Wine processing

■ Food processing

■ Textile

■ Chemicals

■ Pulp and paper

■ Cement

Transport■ Airports

■ Ports

Power systems■ Switching stations

Description I UniGear 550

5

Normal service conditionsThe rated characteristics of the switchboard are guaranteed

under the following ambient conditions:

■ Minimum ambient temperature:-5℃■ Maximum ambient temperature: +40℃■ Maximum relative humidity: 95%

■ Maximum altitude: 1000 m a.s.1

■ Presence of normal, non-corrosive and uncontaminated

atmosphere

StandardsThe switchboard and main apparatus contained in it comply

Air-insulated

with the following standards:

■ IEC 62271-1 for general purposes

■ IEC 62271-200 for the switchgear

■ IEC 62271-102 for the earthing switch

■ IEC 60071-2 For the insulation coordination

■ IEC 62271-100 for the circuit-breakers

UnlGear 550 has been certified as having satisfied the

requirements of major shipping registers (LR RINA BV and GL)

for use in marine Installations.

In accordance with the IEC 62271-200 standard, UniGear 550

is defined as follows:

■ Partition metallic (PM): This means the panel is equipped

with metallic shutters and partitions between the operating

parts and an open compartment

■ Loss of service continuity (LSC2B): In other words, service

of the main busbar and of the cable compartment is

guaranteed when normal maintenance is being carried

out in one of the main circuit compartments (e.g. circuit-

breaker compartment)

■ Internal arc classified (IAC AFLR): Panels classified as IAC

AFLR, have fulfilled the five criteria of the internal arc tests

from the front, side and rear having fulfilling the five criteria

of the internal arc tests

Degrees of protectionThe degrees of protection of the switchgears conform with

IEC 60529 standards.

UniGear switchboards are normally supplied with the following

standard degrees of protection:

■ IP 4X on the external housing

■ IP 2X inside the units

Color at the external surfaces: RAL 7035

Electrical characteristics

IEC GB GB IEC

Rated voltage kV 12 12 12 17.5

Rated insulationvoltage kV 12 12 12 17.5

Rated power frequency withstand voltage kV 1 m 28 42 42 38

Rated lightning impulse withstand voltage kV 75 75 75 95

Nominal frequency Hz 50-60 50-60 50-60 50-60

Rated short-time withstand current kA 3 s ...31.5 ...31.5 ...31.5(2) ...31.5

Peak curent kA 80 80 80 ...80

Internal arc withstand current kA 1 s ...31.5 ...31.5 ...31.5 ...31.5

Main busbars rated current(1) A ...4000 ...4000 ...4000 ...4000

Branch connections rated current A 630-1250 630-1250 1600-2000 630-1250

(1) Up to 4000 A if coupled with other Unigear units

(2) Panel for 1600 A-2000 A is tested for 4 s

UniGear 550 I Air-insulated

6

Metal-clad

Metal-clad I UniGear 550

CompartmentsEach UniGear 550 panel consists of three power compartments:

apparatus, busbars and feeder, which are segregated from

each other by metallic partitions.

There are two panel versions available for closing the apparatus

and feeder compartment doors: one version uses screws and

the other a central handle.

Each unit is fitted with an auxiliary compartment where all the

instruments and cabling are housed. Arc-proof switchgear is

normally provided with a duct to evacuate the gases produced

by an arc. All units are accessible from the front, and the

maintenance and service operations can therefore also be

carried out with the switchgear wall mounted.

Main busbarsThe busbar compartment contains the main busbar system

which is connected to the fixed upper isolating contacts of the

apparatus by means of branch connections.

The main busbars are made of electrolytic copper-flat busbars

or a special copper section is used-and are normally covered

with insulating material. There is a single busbar compartment

along the whole length of the switchgear and this can be fitted

with segregations so as to divide each unit into compartments.

Branch connectionsThe feeder compartment contains a branch system that enables

a connection between the power cables and the fixed lower

isolating contacts of the apparatus.

The branch connections are made with flat busbars composed

of electrolytic copper for the whole range of currents and are

normally covered with insulating material.

Earthing switchEach incoming/outgoing feeder compartment can be fi tted with

an earthing switch for cable earthing. This switch can also be

used to earth the busbar system (measurements and bus-tie

units). The earthing switch has short-circuit making capacity.

The position of the earthing switch can be seen from the front

of the switchgear by means of an indicator.

Earthing busbarThe earthing busbar is made of electrolytic copper. It runs

longitudinally all round of the switchgear, thereby guaranteeing

maximum personnel and installation safety.

Insulating bushings and shuttersThe insulating bushings contained in the apparatus compartment

contain the fixed contacts that enable a connection between

the apparatus, and the busbar and feeder compartments

respectively. The bushings are of a single-pole type and made

of epoxy resin. The shutters are metallic and are activated

automatically as the apparatus is being moved from the

rackedout position to the service position and vice versa.

CablesSingle and three-core cables-up to a maximum of twelve per

phase-can be used depending on the rated voltage, the unit

dimensions and the cable cross section. The cables are easily

accessible from the front of the switchgear panel which can

be wall mounted in the station.

Gas exhaust ductThe hot gases and incandescent particles produced by the

internal arc must be evacuated from the room. Therefore, a

gas exhaust duct is positioned above the switchgear, running

along its entire length. Each power compartment is fitted with

a flap positioned at the top. The pressure generated by the

fault causes it to open, allowing the gas to pass into the duct.

The UniGear 550 switchgear is equipped with a complete

range of solutions to deal with all requirements, irrespective

of whether evacuation is required directly at the end of the

switchgear, or if solutions from the front or rear are requested.

Some installations, such as those in the marine industry,

do not allow the gases to be conveyed outside the room

and therefore dedicated solutions have been realized using

expansion chambers and longitudinal evacuation chimneys

that not only guarantee personnel safety, but which conform

with the relevant standards.

7

Safety

UniGear 550 I UniGear 550 | Safety

The UniGear 550 switchgear is fitted with all the interlocks

and accessories needed to guarantee the high level of safety

and reliability needed both during installation and for the

operators.

InterlocksStandard safety interlocks, foreseen by the relevant standards,

are necessary to guarantee the correct operation sequence.

Other interlocks, available on request, must be considered in

the installation, service and maintenance procedures. Their

presence guarantees the highest level of reliability even when

an accidental error occurs, and allows what ABB defines as

an "error-free" system of interlocks.

PadlocksThe apparatus and feeder compartment doors can be locked

in the closed position by means of padlocks. These can be

applied to both door-closing versions, i.e. where screws are

used or a central handle.

The operations needed to rack the apparatus in and out, and

to open and close the earthing switch can be prevented by

applying the padlocks to the insertion slots of the relevant

operating levers.

The metallic segregation shutters can be locked by means

of two independent padlocks in both the open and closed

positions.

The switchgear is able to accommodate padlocks with diameters

ranging from 4 mm to 8 mm.

Locking magnetsThe locking magnets are used to make automatic interlock

logics without human intervention.

The apparatus racking-in/out and the earthing switch

opening/closing operations can be prevented. The doors of

the apparatus and feeder compartments can be locked in the

closed position. The magnets can be applied to both door

closing versions.

The magnets operate with active logics and therefore the lack

of auxiliary voltage makes the lock become operative.

8

Type tests

Type tests I UniGear 550

The UniGear switchgear has undergone all the tests required

by the international (IEC) and regional standards (including the

Chinese GB and Russian GOST standards). In addition, tests

required by the main shipping registers (LR, DNV, RINA, BV

and GL) have been carried out to ensure that the switchgear

is suitable for use in marine installations.

The tests simulate situations which occur very rarely or

never in normal installations. For example, a short circuit

at the maximum current level for which the installation has

been designed is unrealistic because of the presence of

currentlimiting components (such as the cables) and because

the power available is normally lower than rated levels.

Each switchgear unit is also subjected to routine factory

tests before delivery. These “functional” tests check that the

switchgear is configured correctly according to the specific

characteristics of each installation.

Typical type tests include:■ Short-time withstand current and peak withstand current tests

■ Temperature rise tests and main circuit impendence

measurements

■ Dielectric test on the main and auxiliary circuits

■ Verifi cation of making and breaking capacity of the apparatus

■ Verifi cation of making and breaking capacities of earthing switch

■ Mechanical operation tests

■ Arc-withstand testing

The shipping registers require that the switchgear be tested to ensure it remains unaffected by:■ High ambient temperatures

■ Inclination

■ Vibration

Routine factory tests include:■ Visual inspection and check

■ Mechanical sequence operations

■ Cabling check

■ Electrical sequence operations

■ Insulation testing

■ Resistance measurement of the main circuits

Type testsShort-time and peak withstand current The test ensures that

the main power and earthing circuits are able to withstand

the stresses inflicted by a short-circuit current without being

damaged. The earthing system of the withdrawable apparatus

and the earthing busbar of the switchgear are included in the

test. The mechanical and electrical properties of the main

busbar system and of the top and bottom branch connections

remain unchanged, even when a short circuit occurs.

Temperature riseThe temperature rise test is carried out at the rated current

value of the switchgear unit and is used to ensure that the

temperature does not become excessive inside the unit.

During the test, both the switchgear and any additional

apparatus, such as circuit breakers, contactors and switch

disconnectors, are checked.

An apparatus subject to testing in free air is able to withstand

higher rated currents than those connected to a switchgear

unit, which means the rated current of the apparatus depends

on the characteristics of the switchgear and on the relevant

ventilation system (natural or forced).

Dielectric

These tests check if the switchgear is able to withstand

lightning surges and the power frequency voltage. The power

frequency withstand-voltage test is carried out as a type test,

but also routinely on every switchgear unit manufactured.

Apparatus making and breaking capacity

All circuit breakers are subjected to the rated current and

shortcircuit current breaking tests. Furthermore, they are

also subjected to the opening and closing of capacitive and

inductive loads, capacitor banks and cable lines.

Earthing switch capacityThe earthing switch of the UniGear switchgear can be closed

in case of a short circuit and is normally interlocked to avoid

being used on live circuits. However, should this happen

for any one of several reasons, the safety of the personnel

operating the installation is fully guaranteed.

Mechanical operationsThe mechanical testing of all the operating parts highlights

thereliability of the apparatus. Experience in the electro-

technical sector shows that mechanical problems are one of

the most common causes of a fault in an installation.

The switchgear and apparatus it contains are tested by

carrying out a high number of operations, higher than those

which are normally carried out in installations in service.

Moreover, the switchgear components are part of a quality

program system and are regularly taken up from the

production lines and subjected to mechanical life tests to

verify that the quality is identical to that of the components

subjected to the type tests.

9

Arc proof

UniGear 550 I Arc proof

When developing medium-voltage switchgear, personnel

safety must take priority, which is why the UniGear 550

switchgear has been designed and tested to withstand an

internal arc caused by a short-circuit current at the same level

as the maximum shorttime withstand level.

The tests show that the metal housing of the UniGear switchgear

is able to protect personnel working near the switchgear

should a fault occur that results in an internal arc.

An internal arc is among the most unlikely of faults, although it

can theoretically be caused by various factors, such as:

■ Insulation defects due to a deterioration in component

quality, which can be caused by adverse environmental

conditions and a highly polluted atmosphere

■ Over-voltages of atmospheric origin or generated by the

operation of a component

■ Incorrect operation resulting from not following proper

procedures or inadequate training of personnel in charge

of the installation

■ Breakage or tampering of the safety interlocks

■ Overheating of the contact area due to the presence of

corrosive agents or insufficiently tightened connections

■ Small animals in the switchgear

■ Material left behind inside the switchgear during maintenance

operations

While the characteristics of the UniGear switchgear notably

reduce the incidence of these causes, some of them cannot

be eliminated entirely.

The energy produced by an internal arc causes the following

phenomena:

■ An Increase in the internal pressure

■ An increase in temperature

■ Visual and acoustic effects

■ Mechanical stresses on the switchgear structure

■ Melting, decomposition and the vaporization of materials

Unless suitably controlled, operators could incur serious injury

due to the shock wave, flying parts and the doors opening. In

addition, they could be burned by the hot gases emitted by an

internal arc.

The tests ensure that the compartment doors remain closed

and that no components are ejected from the switchgear even

when it is subjected to very high pressures. Additionally, the

tests check that no flames or incendiary gases are emitted.

Moreover, the lack of holes in the external, freely accessible

parts of the housing, and the assurance that all the connections to

the earthing circuit remain intact, guarantee the safety of the

personnel who must access the switchgear after a fault has

occurred.

The IEC 62271-200 standard describes the methods to

be used to carry out the tests and the criteria which the

switchgear must conform to, such as:

■ The doors of the switchgear must remain closed and there

must be no openings in the cover panels

■ Any part of the switchgear which may be hazardous for

personnel must not be ejected

■ No holes must appear in any part of the switchgear

accessible by personnel

■ The vertically and horizontally arranged fabric indicators

placed outside the switchgear must not get burnt

■ All the switchgear earthing connections must remain effective

A metal enclosed switchgear that successfully fulfills these

criteria are designated as follows:

■ General: Internal arc classified (IAC AFLR)

■ Accessibility: Given as A, B or C, where (A) means the

switchgear is accessible to authorized personnel only, to

all (B), not accessible due to installation (C)

■ Test values: Test current in kA, and duration in seconds

When installing the switchgear, some fundamental points must

be taken into consideration, such as:

■ The level of the fault current (16...31.5 kA)

■ The duration of the fault (0.1...1 s)

■ Escape routes for the hot and toxic gases given off by

combustion of materials.

■ Dimensions of the room, with special attention paid to the

height.

The parameters of each specific plant mean that evacuation of

the hot gases and burning particles must be carefully checked

to ensure and maintain personnel safety.

The UniGear switchgear is fitted with a complete range of

solutions to deal with all requirements when evacuation is

possible inside the room, but also when it is not compatible

with the plant characteristics, as in the case of shipping

installations.

10

Arc proof

The UniGear 550 switchgear offers complete passive structural

protection against the effects of a fault due to an internal arc

for a period of 1s up to 31.5 kA. ABB has also developed

protection systems which allow very important objectives to

be achieved:

■ The detection and repair of the fault in less than 100 ms

■ Minimal effects of the fault on the apparatus

■ Minimal down time

For active protection against an internal arc, devices

consisting of various types of sensors which detect faults

immediately and carry out selected opening of circuit breakers

can be installed in the various compartments.

1 Arc with stand test

Arc proof I UniGear 550

11

Vacuum circuit-breakers

UniGear 550 I Vacuum circuit-breakers

The Vmax medium-voltage circuit-breaker interrupters are the

same as those used in the VD4 and VM1 series, thereby

ensuring they all share the same characteristics, i.e. interruption

of the currents without arc chopping and over-voltages, and

extremely rapid recovery of the dielectric properties after an

interruption.

Operating mechanismThe Vmax series is fitted with an easy-to-use mechanical

operating mechanism, which is derived from the same

mechanism that equips the VD4 series.

The stored energy operating mechanism with free trip therefore

allows the opening and closing of operations independent of

the operator. The spring system of the operating mechanism

can be recharged manually or by means of a geared motor.

The apparatus can be opened and closed using the pushbuttons

located on the front of the operating mechanism, and by

means of the electric releases (shunt closing, shunt opening

and undervoltage).

The circuit breaker is always fi tted with a mechanical antipumping

device to prevent repeated opening and closing following

simultaneous and maintained opening and closing commands

(local and/or remote).

TruckThe poles and operating mechanism are fixed onto a metal

supporting and handling truck. The truck is fitted with a set

of wheels, making the insertion and removal of the apparatus

into the switchgear panel possible with the door still closed.

The truck allows the circuit breaker to be properly earthed by

means of the metallic structure of the switchgear.

Apparatus-Operator InterfaceThe circuit-breaker user interface is fitted with the following

parts:

■ Open button

■ Close button

■ An operation counter

■ Circuit-breaker open/closed indicator

■ Operating spring charged/discharged indicator

■ A manual spring operator

■ A selector for the exclusion of under-voltage release

(optional)

Vacuum circuit-breakers-VmaxVmax medium-voltage circuit breakers are used in electrical

distribution for the control and protection of cables, overhead

lines, transformers and distribution substations, motors,

transformers, generators and capacitor banks.

They are the synthesis of ABB vacuum interrupter technology,

and excellence in breaker design, engineering and production.

With specifications of up to 12 kV (rated voltage), 2000 A

(rated current) and 31.5 kA (internal arc withstand current),

Vmax breakers are ideally suited to the narrow (550 mm)

UniGear ZS1 type switchgear panels.

Insulating monoblocThe Vmax structure is particularly innovative in that it features

a single insulating monobloc instead of three distinct separate

poles to house the three vacuum interrupters. The monobloc

and mechanical operating mechanism, with a spring for

controlling energy storage, are fixed to a sturdy metallic frame.

This compact structure ensures the same sturdiness and

mechanical reliability as a traditional circuit breaker consisting

of an operating mechanism/pole base cover and three separate

poles. The low speed of the contacts together with the

reduced run and mass container, limit the energy required for

an operation, and therefore guarantee extremely limited wear

on the system. This means the circuit breaker requires minimal

maintenance.

12

Standards

Standards I UniGear 550

IEC 62271-100 for circuit-breakers

Circuit-breaker Vmax/L 12 Vmax/L 17 Vmax/L 12

Standards GB 1984-2003 ■

IEC 62271-100 ■ ■ ■

CEI 17-1 (File 1375) ■ ■ ■

Rated voltage Ur [kV] 12 17.5 12

Rated insulation voltage Us [kV] 12 17.5 12

Withstand voltage at 50Hz Ud (1 min) [kV] 28 38 42

Impulse withstand voltage Up [kV] 75 95 75

Rated frequency fr [Hz] 50-60 50-60 50-60

Rated normal current (40*) (2) lr [A] 630 1250 630 1250 2000

Rated breaking capacity Isc [kA] 16 16 16 16 16

(rated short-circuit 20 20 20 20 20

symmetrical current) 25 25 25 25

Ik [Ak 31.5 31.5 31.5 31.5 31.5

Rated short-time (2) Ir [kV] 16 16 16 16 16

withstand current(3 s) 20 20 20 20 20

25 25 25 25

31.5 31.5 31.5 31.5 31.5

Making capacity Ip [kA] 40 40 40 40 40

50 50 50 50 50

63 63 63 63 63

80 80 80 80 80

Operation sequence [O-0.3 s-CO-15 s-CO] ■ ■ ■ ■ ■

Opening time [ms] 40...60 40...60 40...60 40...60 40...60

Acr time [ms] 10...15 10...15 10...15 10...15 10...15

Total interruption time [ms] 50...75 50...75 50...75 50...75 50...75

Closing time [ms] 60...80 60...80 60...80 60...80 60...80

13

Uses and features

UniGear 550 I Uses and features

UniGear 550 units are designed to be used in conjunction with the following instruments:■ Ring core-type CTs (standard)■ Block-type CTs (optional)■ Bushing-type CTs (optional)■ Ring-core type CTs

With the advent of new digital protection and measuring

instruments, the use of low-power measuring instruments can

be easily extended to primary distribution switchgear.

The CTs are fixed to a support, i.e. a CT rod, inside the

switchgear which is positioned above the cable terminals. This

ensures the CTs remain unaffected by the number of cables,

cross sections or terminals used.

Each CT rod is designed to accommodate a maximum of

two CTs per phase (metering and protection) and it has the

following dimensional constraints:

■ A minimum internal diameter of 59 mm

■ A maximum external diameter of 200 mm

■ A maximum height of 100 mm

Block-type CTsAs an alternative to the above specified current measuring

instruments, a dedicated combination of block-type current

transformers, current sensors and combi-sensors can be used.

These are used in case of special requirements, such as fiscal

metering on incoming feeders (Class 0.2), differential protection

on line feeders, etc.

The use of block-type CTs will allow for the application of ring

core-type CTs on cables.

Bushing-type current transformersIn a large part of the market, especially among those who

apply BS concepts, the bushing-type CT is very common.

Earthing switch ST1-UGThe UniGear 550 panel is equipped with the patented earthing

switch type ST1-UG, which features a rectilinear movement.

The switch is fitted with a snap-action operation mechanism

for positive high-speed closing. It is dimensioned to conduct

the rated short-circuit current when closed under load conditions.

The speed of the snap-action closing operation is independent

of the controls.

The switch is equipped with an earthing blade which connects

the three phases to the earthing pins located on the copper bars

of the cable connecting system. The earthing bar is electrically

connected to ground by a standard copper conductor.

The closing mechanism of the earthing switch functions

independently of the rotation of the drive shaft, and the

switching speed and torque achieved are independent of

the action of the operating mechanism. During the opening

process, however, the toggle springs have no effect on the

speed of contact separation.

A manual operating lever is provided to operate the switch.

The switch has been tested for two closing operations at

100% of the rated short-circuit current.

The device is provided with auxiliary switches, operated by

the rod mechanism, to indicate the status (open or closed) of

the switch.

Other components, such as a locking magnet, padlock, and

key locks for the open and closed positions are available on

request.

1 Ring core-type CT | 2 Block-type CT | 3 Bushing-type CT | 4 Earthing switch ST1-UG

1 2 3 4

14

Feeder protection

Feeder protection I UniGear 550

GeneralThe protection functions can be divided into two major groups:

(1) Those that trip the circuit breaker of the faulted feeder if a

short circuit, or an earth fault, for example, occurs.

(2) Protection functions that monitor the operation of the

feeder and the rest of the network. voltage, frequency and

overload protection functions (alarming/tripping) are typical

monitoring functions.

The basic requirements of a protection system are adequate

sensitivity and speed of operation, taking into account the

minimum and maximum fault currents occurring in the intelligent

electronic device (IED)-such as the REF615-locations,

selectivity, monitoring inrush currents and the thermal and

mechanical strength of the lines behind the relaying point.

In many cases, the above requirements can be fulfilled with

nondirectional/directional current or multi-staged impedance

measuring functions.

The purpose of an over-and under-voltage protection system

is to monitor the voltage level of the network. If the voltage

level deviates from the target value by more than the permitted

margin for a specific period of time, the voltage protection

system limits the duration of the fault and any resulting stress

on the mechanism.

To prevent major outages due to frequency disturbances,

the substations are usually equipped with under-frequency

protection relays, which in turn control various load-shedding

schemes.

These are just a few examples of the main protection functions

for feeders. more details can be found in the technical

documentation produced for ABB protection relays.

Applications and featuresDepending on the needs of the customer, a suitable IED type

can be selected and configured in a way that provides an

overall solution for different feeder types.

Generally, the required protection functionality of the feeder

types mentioned above differs greatly depending on the

characteristics of the fault current sources and the types of

advanced functions that may be needed to fulfill the basic

requirements of the protection application. A few examples

will now be given to illustrate the requirement level.

Fig. 1: Comparison of standard and high requirement feeders

15UniGear 550 I Feeder protection

Recommended productsABB supplies a wide range of feeder protection relays and

terminals to fulfill the requirements of each unique application.

For an application with standard requirements and a need

for additional features, the REF615, REX521 units are

excellent choices. for applications with higher functionality

requirements, the multifunction terminals REF54_ should be

selected.

Fig. 2 Typical standard feeder I Fig. 3 Typical high requirement feeder

Fig. 2 Fig. 3

1) Optional intermittent E/F protection

16

Transformer protection

Transformer protection I UniGear 550

GeneralThe power transformer is an important component and one

of the most valuable individual units in the power distribution

network. A highly reliable power transformer is therefore of

particular importance in preventing disturbances in the power

distribution system.

Although high-quality power transformers are highly reliable,

faults including insulation breakdowns sometimes occur.

These faults, which appear as short circuits and/or earth

faults generally cause severe damage to the windings and

transformer core. The damage is proportional to the fault

clearing time so the power transformer must be disconnected

as quickly as possible. The power transformer has to be

transported to a workshop for repair, which is a very time-

consuming process.

The operation of a power network in which the power

transformer is out of service is always cumbersome.

Therefore, a power transformer fault often constitutes a more

severe power system fault than a line fault, which usually can

be rectified rather quickly. It is therefore extremely important

that fast and reliable protection relays are used to detect

transformer faults and initiate tripping.

The size, voltage level and importance of the power

transformer determine the extent and choice of the monitoring

and protection devices used to limit the damage of a

possible fault. When compared to the total cost of the power

transformer and the costs caused by a power transformer

fault, the cost of the protection system is negligible.

Applications and featuresABB divides transformer applications into standard

transformer protection applications (typically<1 MVA) and high

requirement transformer applications (typically>5 MVA).

Basic protection requirements (<1 MVA) include:■ Sudden pressure (buchholz) relay

■ Differential protection

■ Over-current protection

■ Earth fault protection

■ Overload protection

■ Unbalance protection

■ Oil level monitoring

High requirements (>5 MVA) are:■ Sudden pressure (buchholz) relay

■ Differential protection

■ Over-current protection

■ Restricted earth fault (REF) protection

■ Overload protection

■ Unbalance protection

■ Over/Under-voltage protection

■ Over/under-frequency protection

■ Oil-level monitoring

17

Motor protection

UniGear 550 I Motor protection

GeneralMotor protection generally provides over-current, unbalance,

earth-fault and short-circuit protection. However, as well as

electrical faults, one of the worst threats facing motors is

overheating, which comes from improper operation. That is

why the fundamental issue for motors is thermal protection.

ABB's solutions focus on advanced thermal protection that

prevents the improper use of the motors. Thermal overload

protection is needed to protect the motor against both

shortand longtime overload and it is extremely important

for the performance of the motor. Short overload conditions

mainly occur during motor start-up.

There are four crucial elements in thermal motor protection:

(1) Most importantly, the thermal overload protection function

monitors the thermal load and records related events.

(2) A cumulative start-up time counter supporting the overload

protection limits the number of consecutive cold starts.

(3) Thermal stress during any single start-up condition is

monitored by the start-up supervision function, which

protects the motor from becoming locked and extending

start-up times.

(4) The fourth element is thermal protection based on

Resistance. Temperature detector (RTD) sensors. As RTD

sensors directly measure the temperature of the stator

winding, bearings, etc., this type of thermal protection is

especially useful if the motor's cooling system is blocked.

Improper use of running motors does not necessarily break

the equipment, but shortens its lifespan. Therefore, a reliable

and versatile motor protection system not only protects

the motor but it also prolongs its life, which contributes to

improving the return on investment of your motor drive.

Applications and featuresThanks to comprehensive communication protocols, including

the widely used industrial protocols such as Modbus RTU/ASCII

and profibus DP, ABB motor protection relays and terminals

can be easily integrated into various control systems.

18

Motor protection

Motor protection I UniGear 550

Recommended productsThe REF541/543/545 transformer terminals are designed for

the comprehensive protection, control, measurement and

supervision of two-winding power transformers and power

generator transformer blocks in utility distribution networks.

It is suitable for applications where on-load tap-changer

control is required. The functionality for standard transformer

protection is provided in the REF542plus terminal.

Fig. 4 Typical standard transformer protection I Fig.5 Typical high requirement transformer protection

Fig. 4 Fig. 5

19

Communication

UniGear 550 I Communication

GeneralIn the complex world of communication, ABB puts a great

deal of effort into finding communication buses and protocols

that ensure a secure and efficient data flow. In addition to the

recently introduced IEC 61850 protocol, ABB uses LON and

SPA communication buses for communication between relays.

In addition, protocols such as IEC 60870-5-103, modbus,

profibus and DNP 3.0 and OPC interface are available.

Depending on the application area, different protocols are

used according to industry de-facto standards.

Utility applicationsIEC 61850IEC 61850 is a flexible, future-proof standard that adapts to

changing requirements, philosophies and technologies. The

function of the IEC 61850 standard is to ensure essential

features, such as interoperability between devices from

different suppliers, the free allocation of functions, adaptability

to ever-changing communication technology and ease of

engineering and maintenance.

Because of the long-term stability of the IEC 61850 standard,

investments in utilities are safeguarded.

Since its inception, ABB has taken a leading position in

the elaboration of corresponding standards in the field of

substation automation.

SPAThe SPA protocol is supported by all ABB relays and

enables a wide range of distribution automation functions.

It is a proven serial bus that has formed the backbone

communication protocol for ABB relays for many years. The

information content that can be transferred is similar to that of

the IEC 61850. To ensure EMI immunity, the SPA protocol is

run over a fiberoptic network.

LONThe LON protocol is a fast bus-based protocol featuring both

vertical (to a master system) and horizontal communication.

When horizontal communication is used, IEDs are able to

exchange interlocking information, for example, over the

communication bus. This reduces the need for hard wiring

between devices, thus saving costs.

The LON bus runs at a substantially higher speed than the

serial buses. ABB has defined extensions to the basic LON

protocol, enabling any information appearing in distribution

automation to be efficiently and securely transferred.To secure

immunity against EMI disturbances, the LON bus runs over

optical fibers.

IEC 60 870-5-103IEC 60 870-5-103 is a standard protocol designed exclusively

for communication between protection IEDs and a master

system. Allowing IEDs of different vendors to be connected

to a common master system, it is widely supported within

distribution automation. The range of information that can be

transmitted with the IEC 60 870-5-103 protocol is smaller

than the information range available through the LON, SPA

and IEC 61850 protocols.

DNP V3.0The DNP protocol, based on the IEC 60 870 standard family,

was originally developed by a single vendor, but has now

evolved into an open standard controlled by a user group.

It is designed for local communication within a substation,

between a protection IED and an RTU (which forwards

information to a remote SCADA system). Additionally, protection

IEDs can be connected directly to a remote system using

this protocol. The DNP has a multitude of options enabling

it to be optimized for different types of applications and

communication environments (it can, for instance, be optimized

to run over a slow communication link).

20

Industrial applications

Industrial applications I UniGear 550

Profibus DP V1Profibus is a major de-facto standard for connectivity to

industrial systems. All ABB relays can be connected to

Profibus master systems using the SPA-ZC 302.

SPA/Profibus converter. The SPA-ZC 302 supports the

Profibus DP V1 protocol and can handle up to 16 SPA

devices. The speed of the Profibus is comparable to that of

LON and it is substantially higher than the speed of serial

protocols. To ensure EMI immunity, Profibus runs over a

double-shielded twisted pair cable. Profibus is generally used

when protected IED information is to be transmitted to a

controller or PLC.

ModbusThe modbus protocol was first introduced by modicon

Inc. and is a widely accepted communication standard for

industrial controllers and PLCs. It is a serial protocol designed

for the transfer of binary and numeric data in a generic format.

The modbus as such does not recognize the data model of a

distribution automation application (as. the IEC 61850 does).

Modeling is done in the application of the modbus master

system. Modbus typically uses a twisted pair RS-485 bus

network as a transmission medium.

OPCOPC is commonly used to interconnect systems in industrial

automation applications. A data exchange system using OPC

consists of an OPC server (which provides data and services)

and an OPC client (which receives data from and uses the

services of the OPC server). The OPC server and the OPC

client are both software components running on PCs. The

interaction between an OPC server and an OPC client can

take place either locally in one PC or over a LAN/WAN

computer network (in the latter case using DCOM as the

intermediate protocol). Data from protection IEDs can be

made available in different ways through an OPC interface.

One option is to use the SPA/OPC or LON/OPC servers,

which collect data from protection IEDs using LON or SPA and

make the data available in the OPC environment.

Another option is to connect the protection IEDs to the

COM610 gateway. Any data in the COM610 can be made

available to an OPC client.

OPC is usually used when the data from protection IEDs is

to be transmitted directly to a control system (as opposed to

profibus and modbus that usually supply data to a controller

or a PLC). Via PC or over a LAN/WAN computer network (in

the latter case using DCOM as the intermediate protocol),

data from protection IEDs can be made available in different

ways through an OPC interface. One option is to use the SPA/

OPC or LON/OPC servers, which collect data from protection

IEDs using LON or SPA and make the data available within

the OPC environment. Another option is to connect the

protection IEDs directly to the COM610, thereby making data

available to an OPC client. OPC is usually used when the data

from protection IEDs is to be transmitted directly to a control

system (as opposed to profibus and modbus that usually

supply data to a controller or a PLC).

21UniGear 550 I Arc protection

Arc protection

GeneralAn electric arc short-circuit in a switchgear installation is

normally caused by a foreign object entering the cubicle or by

a component failure. The arc causes explosion-like heat and

pressure that can extensively damage the switchgear and the

operating personnel.

An adequate arc protection system protects a substation

against arc faults by minimizing the burning time of the arc,

thus preventing excessive heat and damage. It minimizes

material damage and allows power distribution to be smoothly

and safely restored. The system can also bring cost benefits

even before an arc fault occurs. As older switchgear is more

prone to arc faults, an arc protection system will effectively

extend the life of your switchgear and make more of your

investment.

But more importantly, arc-protection technology can help save

lives.

Applications and featuresSources of arcing may be insulation faults, the incorrect

operation of devices, defective bus or cable joints, over-

voltage, corrosion, pollution, moisture, ferroresonance (in

instrument transformers) and even ageing due to electrical

stress. Most of these arc-fault sources could be prevented by

sufficient maintenance. However, in spite of the precautions

taken, human errors can lead to arc faults.

Time is critical when it comes to detecting and minimizing

the effects of an electric arc. An arc fault lasting 500 ms may

severely damage the installation. If the burning time of the

arc is less than 100 ms the damage is often limited, but if the

arc is extinguished in less than 35 ms, the effect goes almost

unnoticed.

Generally applied protection relays are not fast enough to

ensure safe fault clearance times when arc faults occur.

The operation time of the over-current relay controlling the

incoming circuit breaker may, for instance, have to be delayed

by hundreds of milliseconds for selectivity reasons. This delay

can be avoided by installing an arc-protection system.

The total fault clearance time can be reduced to a maximum

of 2.5 ms, plus the circuit breaker's contact travel time.

Furthermore, in cases of cable compartment faults, auto-

reclosures can be eliminated by employing arc protection.

Recommended productsThe arc protection system, REA101, with its extension units,

REA103, REA105 and REA107, are designed to be used

for the protection of medium and low-voltage air-insulated

switchgear. The central unit type REA101 can operate

independently or together with other REA101 units.

With tripping times as low as 2.5 ms, REA is the fastest arc

protection system on the market.

REAis equipped with a fast integrated over-current sensing

element and it works independently of other feeder protection

units. The REF610 feeder protection relay includes an optional

arc protection function for the feeder cubicle.

Fig. 8 Typical setup with REA101 and REA103 subunits

3

Trip

Trip

REA 101

REA 103 REA 103

Light

22

Selection guide

Selection guide I UniGear 550

Application REF615 REX521 REF54_ RET 54_ REM54_ REM610 REA10_

Feeder application ■ ■

High requirement feeder application ■ ■

Transformer application ■ ■

High requirement transformer application ■

Motor protection ■ ■ ■ ■

High requirement motor application ■

Generator & synchronous motor ■

Distance protection ■

Arc protection for feeder cubicle ■ ■

Arc protection system

Communication

IEC 60870-5-103 ■ ■ ■ ■ ■

IEC 61850 ■* ■* ■* ■* ■* ■*

DNP 3.0 ■ ■ ■ ■

SPA ■ ■ ■ ■ ■ ■

LON ■ ■* ■ ■ ■ ■*

Modbus ■ ■ ■ ■ ■

Profibus ■* ■* ■* ■* ■* ■*

Additional functions

Fault locator ■

Web interface ■

CAN interface ■

On load tap chemger control ■

Disturbance recording ■ ■ ■ ■ ■ ■

Withdrawable release mechanics ■ ■

Condition monitoring ■ ■ ■ ■ ■

Single line diagram HMI** ■ ■ ■

Remote contro ■ ■ ■ ■

Power quality monitoring ■ ■

Sensor inputs ■ ■ ■ ■

Auto re-closure 5 shots 3 shots 5 shots

RTD*** inputs 8 8 6

* With interface adapter

** HMI-human machine Interface

***RTD-resistive temperature detector

23

REF542plus multifunction protectionand control unit

UniGear 550 I REF542plus multifunction protection and control unit

The REF542plus unit integrates all the secondary functions

relevant to a switchgear unit in a single module fitted with a

watchdog.

Thanks to the flexibility of its software, the unit is able to

satisfy a vast range of installation requirements. The high

level of functionality of the REF542plus unit is supported by a

simple and easy-to-use user interface.

With a REF542plus unit, each medium-voltage UniGear panel

becomes an integrated and independent unit able to carry out

functions such as protection, measurement, control, signaling,

interlocking, automation and communication.

The REF542plus is characterized by■ A single interface between the switchgear and operator for

the installation panels: feeder, transformer, motor,generator,

power correction banks, bus-tie and measurements units.-

Single type of spares parts and accessories: a single

hardware unit

■ Low maintenance. Good preventive maintenance severely

limits the faults caused by tampering and errors

■ The functions can be easily modified and upgraded,

even when the switchgear is in service, by means of unit

configuration software switchgear

HardwareThe device central unit is housed inside the auxiliary

compartment of the switchgear while the user interface is

located on the door of this compartment.

The two pieces are connected together by means of a

simple communication cable. The user interface can be

replaced while the central unit remains in service and all the

measurement, control and protection functions are guaranteed

during maintenance work.

All the connections are made by means of plug socket

connectors to optimize service and maintenance operations.

Machine-user interfaceThe UniGear switchgear is easily operated via the user

interface of the REF542plus unit.

All the apparatus control operations, measurement readouts,

detection of signals and parameterization of functions can be

carried out directly from the front of the unit, or by means of a

laptop computer connected to the optic communication gate

located on the front.

Central unitThe REF542plus central unit consists of several electronic

modules:

■ Feeder. The apparatus is fitted with a multi-voltage

internal feeder and can operate from 48 Vdc to 220 Vdc.

Thanks to its digital technology, consumption is very low

■ Digital inputs. Each unit is fitted with a minimum of

14 digital inputs to interface with the apparatus-circuit-

breaker and earthing switch-contained in the switchgear.

These can be increased to a maximum of 42. They

operate between 20 Vdc and 250 Vdc. and are freely

programmable.

■ Digital outputs. These consist of free contacts made

available by bi-stable relays. Each unit has at least 8

outputs to operate the switchgear apparatus and the

minimum signals required. The number of outputs can be

increased to a maximum of 24. They operate up to

250 Vdc/ac. and are freely programmable.

- The output that controls circuit-breaker opening can also

carry out control of circuit continuity.

- By means of the static outputs with which it is fitted

(from 1 to a maximum of 3), it is possible to interface

conventional supervision systems by means of active

and reactive power measurements with impulse emitter.

■ Analogue inputs. Each unit is fitted with 8 analogue

inputs needed to carry out measurements and protections.

- Signals coming from conventional CTs (1 A and 5 A) and

VTs (100 V and 110 V) or from measurement sensors

(based on a Rogowski coil and resistive divider) can be

acquired.

■ Analogue outputs. The 4 analogue outputs the unit can

be provided with make it possible to interface conventional

supervision systems by means of the integrated

measurement functions. Each output can be freely

programmed as 0...20 mA or 4...20 mA.

24

REF542plus multifunction protectionand control unit

REF542plus multifunction protection and control unit I UniGear 550

CommunicationThe REF542plus unit can be connected to supervision and

process systems by means of an integrated communication

function.

This turns the apparatus into a window through which the

system accesses all the switchgear information and makes

the following functions possible:

■ Monitoring

■ Control

■ Parameterization of the protection functions

■ Measurements

■ Monitoring of all operating apparatus

■ Disturbance oscillography

The following protocols are available for connection to the

supervision and automation systems:

■ ABB SPA-bus

■ LON-bus in accordance with ABB lon application guide

(LAG 1.4)

■ IEC 60870-5-1 03 (in accordance with VDEW specifi cations)

■ MODBUS RTU

Use of the LON-bus protocol and relative LIB 542 library

allows the REF542plus unit to be integrated into ABB

supervision systems.

Using the hardware configuration with two gates and the

MODBUS RTU protocol, it is possible to create redundant

system architectures, or independent connections to two

different systems, for example, a supervisory control and data

acquisition system (SCADA) and a process distributed control

system (DCS).

SynchronizationThe REF542plus unit can be connected to an external master

clock (typically a GPS) by means of a dedicated optic input for

synchronization. When synchronized using this method, the

REF542plus units guarantee chronological recording of events

within a maximum time of 1 ms. The protocol accepted is

IRIG-B.

25

Automatic transfer systems

UniGear 550 I Automatic transfer systems

Automatic transfer systems (ATS) are used to give maximum

service continuity by ensuring an uninterrupted supply of

power. This is possible using various systems based on

different kinds of techniques.

The most common systems are described below with relevant

average transfer times of.

The first two systems on the list above are the simplest and

can be made with conventional logics and instruments. They

guarantee average transfer times and can therefore be used in

installations where voltage gaps are not particularly critical.

On the other hand, the other two systems:

■ Delayed: 1500 ms

■ Depending on the residual voltage: 400 ms-1200 ms

■ Synchronised (ATS): 200 ms-500 ms

■ High speed (HSTS): 30 ms-120 ms

Synchronized ATS and ahigh speed transfer system (HSTS)

require a microprocessor-based apparatus with high

technological content. They guarantee fast transfer times

and are generally applied in plants where the process times

are particularly critical. Slower transfers times would cause

serious malfunctions or even stoppages.

ABB is able to offer all the transfer systems, from the simplest

to the most complex.

The REF542plus unit can be used in medium-voltage

switchgear to manage automatic and manual transfer between

two different incoming feeders.

The time needed for automatic transfer using the REF542plus

unit is between 200 ms and 300 ms (including the circuit-

breaker operating times). This time can vary depending on

the complexity of the software transfer logics. Switchgear

equipped with suitably programmed REF542plus units are

considered complete and efficient systems able to manage

transfer between one power supply system and an alternative

one or reconfigure the network, passing from double radial

distribution to a simple system, in a fully automatic way.

It is also possible to carry out the same operation manually

from a remote control station, or from the front of the

switchgear under the supervision of user personnel. Manual

transfer first involves paralleling two parts of the power

system. By means of the synchronism control function

“synchro-check” (ANSI protection code 25) implemented

from the REF542plus , the power supply lines are closed

simultaneously as the voltage vectors become synchronized

before being disconnected when the transfer has taken place.

The applications described do not.........

Single-line diagram of UniGear switchgear with REF542plus architecture. This configuration is suitable for carrying out automatic and manual transfer (ATS), as well as switchgear protections and measurements.

26

Typical units and technical data

Typical units and technical data I UniGear 550

Single-line diagram of the typical units1 IF-incoming/outgoing feeder | 2 BT-bus tie | 3 R-bus riser | 4 RM-bus riser with measurements5 M-measurements | 6 IFD-direct incoming/Outgoing | 7 IFDM-direct incoming/outgoing with measurement

27UniGear 550 I Typical units and technical data

Single-line diagram of the busbar applications1 Current transformers | 2 Voltage transformers | 3 Duct entry | 4 Earthing switch

Graphical symbols1 Circuit-breaker | 2 Contactor | 3 Switch | 4 Isolating bar | 5 Socket and plug | 6 Voltage transformers | 7 Current transformers | 8 Fuse9 Earth | 10 Cable entry | 11 Busbar entry

...31.5 kA

IF

FM

BT

R

RM

M

IFD

IFDM

DF

Depth(mm)

Rated current (A)

Incoming/outgoing

Incoming/outgoing with measurements

Bus-tie

Riser

Riser with measurements

Measurements

Direct incoming/outgoing

Direct incoming/outgoing with measurement

Switch-disconnector unit

550

630 1250 1600 2000

■ ■ ■ ■

■ ■ ■ ■

■ ■ ■ ■

■ ■

■ ■

■ Altemative solutions

Technical data

28

Typical units and technical data

Typical units and technical data I UniGear 550

■ Width: 550 mm

■ Depth: 630 A~1250 A: 1340 mm

1600 A~2000 A: 1390 mm■ Deeper: 1650 mm

■ Height: 2200 mm

■ Height with gas exhaust duct: 2675 mm

Unit compartmentsA: ApparatusB: Main busbarsC: FeederD: InstrumentsE: Gas exhaust duct

E

A

C

BD

29UniGear 550 I Main connection example

Main connection example

Incoming/outgoing-bottom cables

Item 001 002 003 004 005

630~2000

1

4

2

According to

order request

I.F

630~2000

1

4

2

1

According to

order request

I.F

630~2000

1

4

2

1

1 Set

According to

order request

I.F

630~2000

1

4

2

2

1

According to

order request

I.F

630~2000

1

4

2

2

3

1

According to

order request

I.F

Depth: 1650 mm

Cubicle type

Ring CT

Din CT

Rated current (A)

Circuit breaker Vmax

Current transformer

Voltage transformers

Fuse

Earthing switch ST1-UG

Arrester

Voltage display devices

Purpose

Remarks

Pri

mary

co

mp

on

en

t

Item 006 007 008 009 010

630~2000

1

4

2

3

1

According to

order request

I.F

630~2000

1

4

2

3

3

1

According to

order request

I.F

Depth: 1650 mm

630~2000

1

6

3

According to

order request

I.F

630~2000

1

6

3

1

According to

order request

I.F

630~2000

1

6

3

1

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Memo: Only one type of Ring CT or Din CT could be used in one panel.

30 Main connection example I UniGear 550


Item 011 012 013 014 015

630~2000

1

6

3

2

1

According to

order request

I.F

630~2000

1

6

3

2

3

1

According to

order request

I.F

Depth: 1650 mm

630~2000

1

6

3

3

1

According to

order request

I.F

630~2000

1

6

3

3

3

1

According to

order request

I.F

Depth: 1650 mm

630~2000

1

4

2

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Item 016 017 018 019 020

630~2000

1

6

3

1 Set

According to

order request

I.F

630~2000

1

6

3

2

3

1

1 Set

According to

order request

I.F

Depth: 1650 mm

630~2000

1

6

3

3

3

1

1 Set

According to

order request

I.F

Depth: 1650 mm

630~2000

1

4

2

2

3

1

1 Set

According to

order request

I.F

Depth: 1650 mm

630~2000

1

4

2

3

3

1

1 Set

According to

order request

I.F

Depth: 1650 mm

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t



Item 021A 022A 023A 024A 025A

630~2000

1

4

2

According to

order request

I.F

630~2000

1

4

2

1

According to

order request

I.F

630~2000

1

4

2

1

1 Set

According to

order request

I.F

630~2000

1

4

2

3

3

1

1 Set

According to

order request

I.F

630~2000

1

4

2

2

3

1

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

630~1250

1

6

3

According to

order request

I.F

630~1250

1

6

3

1

According to

order request

I.F

630~1250

1

6

3

1

1 Set

According to

order request

I.F

630~2000

1

6

3

3

3

1

1 Set

According to

order request

I.F

630~2000

1

6

3

2

3

1

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t


Incoming/outgoing-top cables entry (depth: 1650 mm)

Item 026A 027A 028A 029A 030A



630~2000

1

4

2

1 Set

According to

order request

I.F

630~2000

1

6

3

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t


Item 031A 032A 033A 034A 035A

Item 036A 037A 038A 039A 040A


Incoming/outgoing-top busbar entry (depth: 1650 mm)

630~2000

1

4

2

According to

order request

I.F

630~2000

1

4

2

1

According to

order request

I.F

630~2000

1

4

2

1

1 Set

According to

order request

I.F

630~2000

1

4

2

3

3

1

1 Set

According to

order request

I.F

630~2000

1

4

2

2

3

1

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

630~1250

1

6

3

According to

order request

I.F

630~1250

1

6

3

1

According to

order request

I.F

630~1250

1

6

3

1

1 Set

According to

order request

I.F

630~2000

1

6

3

3

3

1

1 Set

According to

order request

I.F

630~2000

1

6

3

2

3

1

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t


Item 021B 022B 023B 024B 025B

Item 026B 027B 028B 029B 030B



630~2000

1

4

2

1 Set

According to

order request

I.F

630~2000

1

6

3

1 Set

According to

order request

I.F

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t


Item 031B 032B 033B 034B 035B

Item 036B 037B 038B 039B 040B


Bus-tie

Item 051 052 053 054 055

630~2000

1

4

2

BT

630~2000

1

4

2

1

BT

630~1250

1

4

2

1 Set

BT

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Item 056 057 058 059 060

630~2000

1

6

3

BT

630~2000

1

6

3

1

BT

630~1250

1

6

3

1 Set

BT

Cubicle type

Ring CT

Din CT

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t




Measurement

Item 061 062 063 064 065

630~1250

2

2

3

M

630~1250

2

2

3

M

630~2000

2

2

3

M

630~2000

2

2

3

M

630~2000

2

2

3

M

Cubicle type

Rated current (A)


Current transformer Din CT


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Item 066 067 068 069 070

Cubicle type

Rated current (A)


Current transformer Din CT


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t


Measurement (VTs)

Item 081 082 083 084 085

2

3

P

3

3

P

2

3

1 Set

P

3

3

1 Set

P

Cubicle type

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Item 086 087 088 089 090

630~1250

2

3

1 Set

P+(1)

630~1250

3

3

1 Set

P+(1)

630~1250

2

3

1 Set

P+R

630~2000

2

3

P+R

630~2000

3

3

P+R

Cubicle type

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t



Item 091 092 093 094 095

630~1250

2

3

1 Set

P+R

630~1250

3

3

1 Set

P+R

Cubicle type

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Item 096 097 098 099 100

Cubicle type

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t


Bus-riser

Item 101 102 103 104 105

630~1250

R

630~1250

1 Set

R

Cubicle type

Rated current (A)


Current transformer


Fuse


Arrester


Purpose

Remarks

Pri

mary

co

mp

on

en

t

Contact us

We reserve the right to make changes in the course of

technical developmentABB Xiamen Electrical Controlgear Co., Ltd.No. 559, Weili Road, Xiamen, Fujian, P.R.China

Tel: +86 592 630 3000

Fax: +86 592 630 3002

Zip Code: 361009

www.abb.com.cn

Pu

blic

ati

on

nu

mb

er:

1V

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Date post:	19-Apr-2018
Category:	Documents
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