ABB HD4/R User manual

Power and productivity

for a better worldTM

Medium voltage products

HD4/R

HD4/S

HD4/UniAir

HD4/UniMix

HD4/R-SEC

Installation and operating instructions

I. Introduction 4

1. Packing and transport 5

2. Inspection on arrival 6

3. Storage 7

4. Handling 8

5. Description 9

5.1 General information 9

5.2 Basic conﬁguration 9

5.3 Operating mechanism 10

5.4 Fixed circuit-breakers 10

5.5 Plug-in circuit-breakers 11

5.6 Gas pressure monitoring device (on request) 11

5.7 Circuit-breaker speciﬁcations 12

6. Instructions for circuit-breaker operation 17

6.1 Safety indications 17

6.2 Operating and signalling parts 17

6.3 Instructions for circuit-breaker operation 17

7. Installation 19

7.1 General information 19

7.2 Normal installation conditions 19

7.3 Preliminary operations 19

7.4 Installation of ﬁxed circuit-breakers 19

7.5 Installation of plug-in circuit-breakers 19

7.6 Power circuit connections 19

7.7 Earthing 20

7.8 Connection of the auxiliary circuits 20

7.9 Overall dimensions 21

8. Putting into service 31

8.1 General procedures 31

9. Routine inspections 32

9.1 General information 32

9.2 Inspection schedule 32

9.3 Troubleshooting 32

10. Servicing operations 33

11. Instructions for handling apparatus containing

SF6gas 34

12. Spare parts and accessories 35

12.1 List of spare parts 35

13. Quality of the products and environmental

protection 36

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 en-

sure that the installations are constructed in accordance with

the rules of good workmanship and safety in the work place.

Responsible behaviour safeguards your own and others’ safety!

Please contact the ABB Assistance Service for any further requirements.

• 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high-

lighted by the following symbol:

I. Introduction

All the installation, putting into service, run-

ning and maintenance operations must be

carried out by suitably qualified personnel

with in-depth knowledge of the apparatus.

This publication contains the information required for installing

and putting the following medium voltage circuit-breakers into

service:HD4/R,HD4/S,HD4/UniAir,HD4/UniMix,HD4/R-SEC.

Please read the manual carefully to ensure that the product is

used correctly.

Refer to the relative instructions in order to assemble the ac-

cessories and/or spare parts correctly.

Similarly to all the apparatus we manufacture, the HD4/R,

HD4/S,HD4/UniAir,HD4/UniMix,HD4/R-SECcircuit-breakers

are also designed for different installation configurations.

However,thesedevicescanbesubjectedtofurthertechnical-

construction modifications (at the customer’s request) so as to

adapt them to special installation requirements.

Consequently,themanualmaynotcontaininstructionscon-

cerning special customized configurations.

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.

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.

Key

ACircuit-breaker rating plate

BOperating mechanism rating plate

1Type of apparatus

2Symbols indicating compliance with Standards

3Serial number

4Circuit-breaker specifications

5Characteristics of the operating mechanism auxiliaries

2. Inspection on arrival

Before proceeding with any operation, al-

ways make sure that the springs of the oper-

ating mechanism are discharged and that the

apparatus is in the open position.

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 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.

Figure 1

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 configura-

tions/conditions.

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re-

packed 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.

4. Handling

The apparatus must not be handled by in-

serting lifting devices directly under the ap-

paratus itself. If this technique is unavoid-

able, place the circuit-breaker on a pallet or

a sturdy supporting surface.

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.

Figure 2

5. Description

5.1 General information

HD4/... circuit-breakers made with the separate pole con-

struction 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UniSwitch,UniAirandUniMixswitchgear.

Depending on the version (excluding 36 kV), they can be

equipped on request with two or three current sensors and

with a PR521 or REF 601 series device for protection against

overcurrents (only REF601 for HD4/R-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UniSwitch,UniAir,UniMix

and UniSec switchgear.

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 SF6gas.

Reference Standards

– IEC 62271-100

– CEI-EN 62271 (dossier 7642).

5.2 Basic conﬁguration

The basic coded versions of the circuit-breakers are always

three-pole and comprise the following equipment (fig. 3):

1closing pushbutton

2opening pushbutton

3circuit-breaker open/closed indicator

4manual operating mechanism

5mechanical indicator for closing springs

6operation counter

moreover:

terminal board for fixed circuit-breaker (connector for plug-

incircuit-breaker),basicwiringfortheconnectionofelectri-

cal accessories.

NOTE. The basic version is always equipped with shunt open-

ingrelease,asetof5open/closedauxiliarycontacts,keylock

and spring loading lever.

Figure 3

5.3 Operating mechanism

The ESH operating mechanism with energy stored by means

of preloaded springs is used for fixed or plu-in HD/4... circuit-

breakers.

The closing springs of the ESN operating mechanism are load-

ed 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.

5.4 Fixed circuit-breakers

Thefixedcircuit-breaker(fig.4)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 (17) 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.

Key

1SF6gas pressure signalling device (on request - only

for circuit-breakers with pressure switch)

2PR521 or REF 601 overcurrent relay (on request)

3Closing pushbutton

4Opening pushbutton

5Circuit-breaker closed indicator

6Circuit-breaker open indicator

7Medium voltage terminals

8Circuit-breaker pole

9Current sensors (if provided)

10 Key lock

11 Fixing brackets

12 Undervoltage release

13 Additional shunt opening release

14 Shunt opening release

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

16 Lever for loading the closing springs in the manual mode

17 Circuit-breaker control circuit supporting terminal box

Figure 4

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