ABB HD4/R User manual

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MEDIUM VOLTAGE PRODUCTS

HD4/R - HD4/R-SEC - HD4/RE-SEC

Installation and operating instructions

Table of Contents

I. Introduction 3

1. Packing and transport 4

2. Inspection on arrival 5

3. Storage 6

4. Handling 7

5. Description 8

6. Instructions for operating

the circuit breaker 15

7. Installation 17

8. Putting into service 25

9. Routine inspections 26

10. Instructions for handling apparatus

containing SF6 gas 28

11. Spare parts and accessories 29

12. Quality of the products and environmental

protection 30

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01 HD4/R series circuit breakers

02 HD4/RE series circuit breakers

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HD4/R - HD4/R-SEC - HD4/RE-SEC - INSTALLATION AND OPERATING INSTRUCTIONS2

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For your safety!

• Make sure that the installation room (space,

divisions and environment) is suitable for the

electrical apparatus.

• Make sure that all the installation, putting into

service and maintenance operations are carried

out by skilled personnel with in-depth knowledge

of the equipment.

• Make sure that all the installation, service and

maintenance operations comply with the

standards and laws so as to ensure that the

installations are constructed in accordance with

the rules of good workmanship and safety in the

work place.

• Strictly comply with the instructions in this

manual.

• Make sure that the rated performance of the

apparatus is not exceeded during service.

• Make sure that the personnel are provided with

this manual and are aware of all the relevant

information while operating on the apparatus.

• Pay special attention to the information in the

manual highlighted by the following symbol:

Responsible behaviour safeguards your own

and others’ safety!

Please contact the ABB Assistance Service

for any further requirements.

MEDIUM VOLTAGE PRODUCTS 3

This publication contains the information required

for installing and putting the following medium

voltage circuit breakers into service: HD4/R, HD4/

RE, HD4/R-SEC, HD4/RE-SEC.

Please read the manual carefully to ensure that the

product is used correctly.

Refer to the relative instructions in order to

assemble the accessories and/or spare parts

correctly.

Similarly to all the apparatus we manufacture, the

HD4/R, HD4/RE, HD4/R-SEC, HD4/RE-SEC circuit

breakers are also designed for different

installation configurations.

However, these devices can be subjected to

further technicalconstruction modifications (at

the customer’s request) so as to adapt them to

special installation requirements.

Consequently, the manual may not contain

instructions concerning special customized

configurations.

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I. Introduction

Besides this manual, it is therefore always

necessary to consult the latest technical

documentation (electric circuit and wiring

diagrams, assembly and installation drawings, any

protection coordination studies, etc.), especially

regarding any variants requested in relation to the

standard configurations.

Only use original spare parts for maintenance

operations.

Please also consult the technical catalogue of the

circuit breaker and the spare parts catalogue for

further details.

All the installation, putting into service,

running and maintenance operations must

be carried out by suitably qualified

personnel with in-depth knowledge of the

apparatus.

HD4/R - HD4/R-SEC - HD4/RE-SEC - INSTALLATION AND OPERATING INSTRUCTIONS4

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1. Packing and transport

The circuit breaker is shipped in special packing in

the open position, with the springs discharged

and with the absolute pressure of the pole

corresponding to the service value.

Each piece of apparatus is protected by a plastic

cover to prevent water from infiltrating during the

loading and unloading stages and to keep the

dust off during storage.

Handling and transport must only be carried out

by expert and properly trained personnel.

Do not remove or alter the switch identification

contents and labels.

Switches subject to UN3164 standards for

transportation by air and / or sea.

Safety data sheet: 1VCD850182

MEDIUM VOLTAGE PRODUCTS 5

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2. Inspection on arrival

As soon as it arrives, check the condition of the

apparatus, that the packing is undamaged and that

the nameplate data (see fig. 1) correspond to the

information in the order confirmation sent by ABB

and in the shipping note.

Also make sure that the supply includes all the

materials described in the shipping note and the

lever for loading the springs of the operating

mechanism in the manual mode.

Should any damage or irregularity be noted in the

supply on unpacking, notify ABB (directly or

through the agent or supplier) as soon as possible

Before proceeding with any operation,

always make sure that the springs of the

operating mechanism are discharged and

that the apparatus is in the open position.

Figure 1

and in any case within five days of receipt.

The apparatus is only supplied with the accessories

specified at the time of ordering and validated in

the order confirmation sent by ABB.

The following documents accompany the

apparatus when it is shipped:

 Instruction manual (this document)

 Test certificate

 Identification label

 Fiscal copy of the shipping notification

 Wiring diagram.

Other documents, sent prior to shipment of the

apparatus, are:

 Order confirmation

 Original shipping notification

 Any drawings or documents referring to special

configurations/conditions.

Key

A Circuit breaker rating plate

B Operating mechanism rating plate

1 Type of apparatus

2 Symbols indicating compliance with Standards

3 Serial number

4 Circuit breaker specifications

5 Characteristics of the operating mechanism auxiliaries

HD4/R - HD4/R-SEC - HD4/RE-SEC - INSTALLATION AND OPERATING INSTRUCTIONS6

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3. Storage

When the apparatus must be stored for a certain

period of time, our workshops can (on request)

provide suitable packing for the specified storage

conditions.

On arrival, the apparatus must be carefully

unpacked and checked as described in the

Checking on arrival section (chap. 2).

If the apparatus cannot be installed immediately, it

must be repacked in the original packing materials.

Insert at least one standard packet of special

hygroscopic substance per piece of apparatus

inside the packing.

Should the original packing no longer be available

and the apparatus cannot be installed immediately,

it should be stored indoors in a well-ventilated, dry,

dust-free, noncorrosive environment, well away

from any easily flammable materials and at a

temperature between -5 °C and +45 °C.

Avoid any accidental impact or positions which

stress the structure of the apparatus.

MEDIUM VOLTAGE PRODUCTS 7

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4. Handling

Before proceeding with any operation, always

make sure that the springs of the operating

mechanism spring are discharged and that the

apparatus is in the open position.

When handling the apparatus, take great care to

prevent the insulating parts and the terminals of

the circuit breaker from being stressed.

The apparatus must not be handled by

inserting lifting devices directly under the

apparatus itself. If this technique is

unavoidable, place the circuit breaker on a

pallet or a sturdy supporting surface.

Figure 2

HD4/R - HD4/R-SEC - HD4/RE-SEC - INSTALLATION AND OPERATING INSTRUCTIONS8

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5. Description

5.1 General information

HD4/R circuit breakers made with the separate

pole construction technique. They are sulphur

hexafluoride insulated for indoor installation and

are life-long sealed pressure devices (Standards

IEC 62271-100 and CEI-EN 62271-100).

Refer to the technical catalogue for the electrical

performance.

The following versions are available:

 Fixed, with rh lateral operating mechanism (up

to 36 kV)

 Plug-in, for UniSec switchgear.

Depending on the version (excluding 36 kV), they

can be equipped on request with two or three

current sensors and with a REF601 series device

for protection against overcurrents (only REF601

for HD4/R-SEC, HD4/RE-SEC).

The three poles, the operating mechanism and any

optional accessories used are assembled on a

sturdy bearing frame.

The metal frame is equipped with wheels for 36 kV

circuit breakers and for circuit breakers for

UniSecswitchgear.

Each pole consists of an epoxy resin enclosure

which houses all the active parts, the kinematism

of the moving contacts, the medium voltage

terminals and the arcing chambers, immersed

in SF6 gas.

Reference Standards

 IEC 62271-100

 CEI-EN 62271-100

5.2 Basic configuration

The basic coded versions of the circuit breakers

are always three-pole and comprise the following

equipment (fig. 3 and 4):

1 closing pushbutton

2 opening pushbutton

3 circuit breaker open/closed indicator

4 manual operating mechanism

5 mechanical indicator for closing springs

6 operation counter

moreover:

terminal board for fixed circuit breaker

(connector for plugin circuit breaker), basic

wiring for the connection of electrical

accessories.

NOTE. The basic version is always equipped with shunt opening

release, a set of 5 open/closed auxiliary contacts, key lock and spring

loading lever (spring loading lever for HD4/R series only).

Figure 4 HD4/R series circuit breakers

Figure 3 HD4/RE series circuit breakers

2 2

1 1

11 8

MEDIUM VOLTAGE PRODUCTS 9

5.3 Operating mechanism

5.3.1 Operating mechanism for HD4/R series

circuit breakers

The ESH operating mechanism with energy stored

by means of preloaded springs is used for fixed or

plu-in HD4/R circuit breakers.

The closing springs of the ESN operating

mechanism are loaded in the manual mode using

the special removable lever.

The opening springs are automatically reloaded

during the closing operation.

If a gearmotor is installed, the closing springs are

automatically loaded after each closing operation.

The shunt closing, shunt opening and

undervoltage releases allow the operations to be

carried out in the remote mode.

5.3.2 Operating mechanism for HD4/RE series

circuit breakers

The EL operating mechanism with energy stored

by means of preloaded springs is used for fixed or

plu-in HD4/RE circuit breakers.

The closing springs of the EL operating

mechanism are loaded in the manual mode using

the special lever.

The opening springs are automatically reloaded

during the closing operation.

If a gearmotor is installed, the closing springs are

automatically loaded after each closing operation.

The shunt closing, shunt opening and

undervoltage releases allow the operations to be

carried out in the remote mode.

Figure 5 Figure 6

Key

1 SF6 gas pressure signalling device (on request - only for

circuit breakers with pressure switch)

2 PR521 or REF 601 overcurrent relay (on request)

3 Closing pushbutton

4 Opening pushbutton

5 Circuit breaker closed indicator

6 Circuit breaker open indicator

7 Undervoltage release

8 Additional shunt opening release

9 Shunt opening release

10 Indicator for closing springs loaded (yellow) / discharged (white)

11 Lever for loading the closing springs in the manual mode

Key

1 SF6 gas pressure signalling device (on request - only for

circuit breakers with pressure switch)

2 PR521 or REF 601 overcurrent relay (on request)

3 Closing pushbutton

4 Opening pushbutton

5 Signalling device for circuit breaker open / closed

6 Undervoltage release

7 Additional shunt opening release

8 Shunt opening release

9 Indicator for closing springs loaded (yellow) / discharged (white)

10 Lever for loading closing springs in manual mode

11 Shunt closing release

HD4/R - HD4/R-SEC - HD4/RE-SEC - INSTALLATION AND OPERATING INSTRUCTIONS10

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5. Description

5.4 Fixed circuit breakers

The fixed circuit breaker (fig. 7) is the basic

version, previously described in sect. 5.2. There

are two drilled supports in the lower part of the

structure to allow the circuit breaker to be

fixed.

The terminal box (7) is available for the electrical

connections of the circuit breaker’s auxiliary

circuits, in the front protection.

The earthing screw is located at the side of the

circuit breaker.

5.5 Withdrawable circuit breakers

The withdrawable circuit breakers are available for

UniSec switchgears. They are essentially derived

from a fixed circuit breaker to which the wheels,

the disconnecting contacts and the locking lever

are applied. The HD4/R-Sec and HD4/RE-Sec

circuit breakers are used in UniSec switchgears.

The circuit breakers can only be extracted in safe

conditions with open isolation switches open and

earth switches closed. To facilitate the extraction

of the circuit breaker, a special extraction truck is

available.

Figure 7

Legenda

1 REF 601 overcurrent relay (on request)

2 Medium voltage terminals

3 Circuit breaker pole

4 Current sensors (if provided)

5 Key lock

6 Fixing brackets

7 Circuit breaker control circuit supporting terminal box

5.6 Gas pressure monitoring

device (on request)

The device for signalling the state of the SF6 gas

is supplied on request and always has two

intervention thresholds (low pressure

and insufficient pressure).

The following configurations can be obtained:

1) with contacts for remote signalling (normal,

low and insufficient pressure);

2) as in point 1, plus a lock on circuit breaker

closure and a choice between automatic

opening or lock on opening;

3) as in point 2 plus three lamps for local

signalling of the state of the gas.

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