T&D

MEDIUM VOLTAGE SWITCHGEAR

Operating Instructions

FBA,FBE,FBTGas-Insulated Ring Main Units up to 36 kV

Operating InstructionsNo. 531 731Edition 01/05

>>

Manufacturer:

AREVA Sachsenwerk GmbH

Rathenaustraße 2D-93055 RegensburgPhone +49 (0)9 41/46 20-0Fax +49 (0)9 41/46 20-418

Service:

Should you have any queries as toour service, please do not hesitateto contact:

AREVA Sachsenwerk GmbH

Service-CenterD-93055 RegensburgPhone +49 (0)9 41/46 20-777Fax +49 (0)9 41/46 20-778

©-2004-AREVA Sachsenwerk GmbH

IMPORTANT NOTE

The Operating Instructions, which are exclusively valid are always supplied by AREVA Sachsenwerk GmbHtogether with the product in question. Our products may only be commissioned, operated, serviced, repaired or decommissioned together with Operating Instructions which have been directly enclosed to the product inquestion by the factory.

On the other hand, these operating instructions are provided to the customer at his/her request for informationonly. None of our products may be commissioned, operated, serviced, repaired or decommissioned on thebasis of these operating instructions.

Non-compliance with this instruction may entail serious damage to the product, the objects pertaining to it, as well as a health hazard or mortal danger. AREVA Sachsenwerk GmbH shall not be held liable for any suchdamage.

3

1 Type 4

2 Rules and Regulations 5

3 Transport 6

4 Installation 7

5 High voltage connection 10

6 Low voltage wiring 14

7 Final work before commissioning 19

8 Operation 20

9 Work on the switchgear 25

10 Insulating gas, container 31

11 Admissible number of operations for the switch disconnectors 32

12 Appendix 33

Contents>>

These operating instructions applyto ring main units: • Type FBA for 12, 17.5,

and 24 kV• Type FBE for 36 kV• Type FBT (transformer switch

block) for 12, 17.5, 24, 36 kV

Type designation

The type designation of the type-tested ring main unit and trans-former switch block indicates the variant, rated peak withstand current,rated voltage, rated lightning impulsewithstand voltage and additionalequipment.

FBA 4 / 24 - 2 / 3001

Components fitted CCT

Rated lightning impulse

withstand voltage125 kV

Rated voltage24 kV

Rated peak withstand current

40 kA

Ring main unit

1 Type>>

4

Fig. 1Gas-insulated ring main unit type FBA/FBE

Fig. 2Transformer switch block FBT

Jack ring

Operating panel

Fuse attachment

High voltage connector withmounted cableplugs (not in-cluded in thescope of delivery)

Instrument recess

5

The switchgear is:• metal-clad • SF6-insulated• type-tested• tested for internal arcs (IEC

60298)• especially suited as ring main

unit for use in power transformerstations

• in compliance with the require-ments of the IEC publication62271-200.

• suited for normal service conditions in accordance with the DIN EN 60694 or IEC pub-lication 60694;for admissible additional condi-tions consult the manufacturer.

Breaking capacity of the switch dis-connector-fuse combination accord-ing to IEC 62271-105.

The feeders with fuses - if equip-ped with all-pole tripping - are in accordance with IEC 62271-105.

All relevant regulations, norms, rules,VDE recommendations and codeshave to be adhered to for transport,erection, assembly, connection andoperation.

Special reference is made to following regulations valid in the Federal Republic of Germany:- DIN EN 62271-200 or

IEC publication 62271-200- VDE 0101 (HD 6371 S1)- DIN EN 50110-1- DIN EN 62271-102 or

IEC publication 62271-102- DIN EN 60265-1 or

IEC publication 60265-1- IEC-Publication 61243-5- VDEW requirements for the

operation of switch disconnectorsystems

- “SF6 systems code“ of the indus-trial injuries insurance institution oflight- and electrical engineering

- accident prevention rules BGV A 2 of the industrial injuries in-surance institution of light- and electrical engineering

- connection and operational condi-tions of the local power supplier.

Users other than from Germanyshould - take the above regulations as

basis;- be in compliance with the local

regulations.

Apart from the mentioned regula-tions take also the following docu-ments into account:- Operating Instructions for the devi-

ces type “IVIS“ integrated in the instrument recess (no. 531 751);

- engineering document “Selectionof HV HRC fuse links for distribu-tion transformers” (no. 531 401)

- Assembly Instruction issued by the manufacturer of cable fittingsconnected to the switchgear;

- current list or Operating Instruc-tion issued by the fuse manu-facturer;

- engineering notes “Gas-insulatedring main unit FB up to 36 kV“;

- Operating Instruction for those devices integrated in the switch-gear (short-circuit indicator etc.).

Erection, assembly and wiring of the switchgear

must only be done by electri-cians!Operational reliability and ser-vice life depend on the expertexecution of the assemblyworks and correct operating.The notes included in theseOperating Instructions must be adhered to. Otherwise war-ranty claims may become nulland void.

For further queries and repeat ordersspecify the type of switchgear, yearof manufacture and serial number.

2 Rules and Regulations>>!

6

Transport of theswitchgear

Packing of the switchgear:• For truck transport, the switchgear

comes on a pallet wrapped withprotective PE foil. Two plasticstraps are used to fix the switch-gear.

• For sea transport the switchgearis wrapped with sealed aluminiumfoil and desiccant within a closedbox with solid wooden bottom.

• For air freight the switchgearcomes within a wooden crate withsolid wood bottom and insulatingair cushion foil as dust protectionor within wooden boxes also withsolid wood bottom.

For transporting the switchgearensure that the transport unit doesnot get out of place or tip over (if re-quired fix the transport pallet on theloading area by nails). If possibleleave the transport units packed. Repack parts for further storage thathave been unpacked for inspections.Use the original packing material.

Transport to the erectionsite

Store the equipment under admis-sible operational conditions. Avoidcondensation.

For transport, make sure that theswitchgear cannot get out of placelaterally (if required by supports).

When transporting the switchgear tothe erection site note that the mainweight is located in the upper part ofthe switchgear. A label at the side ofthe switchgear indicates the centerof gravity.

Transport with forklift truck:Carry the switchgear on pallet only.

Transport without pallet: Hook the crane gear into the jackrings at the unit. Angle at the cranegear > 45°.

3 Transport>>

Variant Width[mm]

FBT

FBA

2011 690

3000990

Height Depth[mm] [mm]

Weight[kg]

1315 725(1045)1

220 to 235460

FBA

30013002

1010

40004001 1330

FBA

4002400350005001

1315(1045)1

725

1315 725

300 to 350

400 to 415400 to 415

(1045)1 425 to 465425 to 465480510

FBT

50025003

1650

50042011 990

FBE

FBE

300030014000

1460

1315(1045)1

725

1700 865

530555580460

(1400)1

1700 865510560600

FBE

40014002

1930

50005001 240050025003

1700(1045)1

865

1700 865

650700700750

(1045)1 800850

Weights

Fig. 3Transport of unit with pallet

>450

Fig. 4Transport of unit without pallet

1) optional

7

Fig. 5Removing and reattaching the cable compartment or fuse cover

4 Installation>>1. Earthingswitch “ON”

2. Unlock, pulloff the key

Lock*

Remove

* When attaching the cover make sure that all hooks are inserted completely that they can be locked.

Attach

3. Lift the coverand remove it.

Frontside L-bars can beremoved panel by panelfor erecting, installationand wiring.

Requirements for theswitchgear room

Before erecting the switchgearcheck the switchgear room accor-ding to the data for civil work:- openings for high voltage cables

and low voltage cables, cableconduit if specified (see Figure 7and 8);

- stability of the fixing points mustcorrespond to the weight of theswitchgear (for weight informationsee section Transport on page 6).

Erection

The ring main units FBA, FBE andFBT come with switch disconnectorin “OFF” position, energy store re-leased and earthing switch in “ON”position.

The energy store must not be charged during erec-

tion, assembly and wiring - riskof injury!

Before placing the switchgear on its location check the even surfaceof the fixing points on the floor. Unevenness should only be 1 mm as a maximum. In case of larger unevenness place shims under the fixing points. For fixing the switchgear to the floor use screw connections M10with tightening torque 40±4 Nm.Make sure not to distort the switch-gear by the fixing screws.

Switchgear earthing

The earthing terminal is located inthe bottom part of the switchgear atthe left side wall.Treat the contact surfaces accordingto section 12.Connect the earthing terminal withthe earthing facility of the switch-gear building. Select cross-sectionand material of the earthing line according to IEC 62271-200 or national dimensioning rule.Tighten the screw connection M12with a tightening torque 70±7 Nm.The connection line is not includedin the scope of delivery.

8

!

Fig. 6Earthing

9

35E

GF

35D

22

H40

0

75

60

D

Fig. 7Fixing and floor openings

L3 L2 L1

pq

n

Fig. 8Required wall opening for angle entry-plugs

Variant D E F G H12 -24kV

FBT 2011

[mm]

620

[mm]

300

[mm]

646

[mm]

590

[mm]

615

FBA 3000

FBA 3001

FBA 3002

FBA 4000

940

940

940

620

940

1260

320

1260

966

966

590

590

966

1286

590

590

615

615

615

615

FBA 4001

FBA 4002

FBA 4003

FBA 5000

1260

1260

940

620

1260

1580

320

1580

FBA 5001

FBA 5002

FBA 5003

FBA 5004

1580

1580

1260

940

1580

1580

620

320

1286

1286

590

590

1606

1606

590

590

615

615

615

615

1606

1606

590

590

1606

1606

590

590

615

615

615

615

Variant36 kV

FBT 2011

D E[mm]

920

[mm]

520

FBE 3000

FBE 3001

FBE 4000

FBE 4001

1390

1390

1390

955

1860

1860

1860

1425

F G[mm]

946

[mm]

745

H[mm]

745

1416

1416

745

745

1886

1886

745

745

770

770

770

770

FBE 4002

FBE 5000

FBE 5002

FBE 5003

1860

2330

955

2330

2330

2330

1425

955

1886

2365

745

745

2365

2365

745

745

770

770

770

770

FBA/T FBE/TU(kV)

Mass n

12/17.5/24

120

36

170

Mass p

Mass q

30

310

75

370

For angle entry-plugs in the transformer feeder

For straight entry-plugs in the transformer feeder

Rear sideAt option

Required screw con-nection:min. M10 ø 15

If crossbeam – max. width 80

10

The switchgear is equipped with outside cone connection bushingsas standard.Standard variants:• Transformer feeder for FBA/FBT

up to 24 kV:connection bushing DIN EN 50181 connection type A(Ir: 250 A; plug contact 7.9+0.02/-0.05 mm)

• Transformer feeder for FBE/FBT36 kV:connection bushingDIN EN 50181 connection type B (Ir: 400 A; plug contact 14 0/-0.04 mm)

• Mains cable feeder for FBA up to 24 kV:FBE 36 kV:FBT up to 36 kV:connection bushing DIN EN 50181 connection type C(Ir: 630 A; screw contact with internal screw thread M16).

Further variants available on request.

Before assembling the cable plugs the outside

cone connection bushing mustbe cleaned free from greaseand silicone using detergents(see section 12).

When connecting the power supply cables and

especially the transformercable, make sure that the cablebushings are not exposed toany mechanical strain duringassembly or in assembledcondition.

Such strain may also occur subsequently and

be due to fasteners and finalwork on the concrete station.

Check the switchgear after havingcompleted assembly work accordingto Chapter 7 “Final work beforecommissioning”.

5 High voltage connection>>

!

!

!

Fig. 9Outside cone connection bushing

Cable 1

11

Nearly all common cable connectionsystems in solid insulation, metal-clador partial insulation variant for plasticor compound-impregnated cablesmay be attached to the ring mainunit.For partial insulated cable connec-tion systems a cable compartmentcover is compulsory needed for eachpanel.Only plastic cables (solid insulation)are used for the connection of thetransformer feeder (see HD 629.1 S1).For distances/insulation level consultthe manufacturer of the cable plugs! T-plugs are recommended for con-nection of cable feeders.

Use angle or straight entry-plugs for connection of the transformerfeeder. For this purpose change the positionof the cable holder (see Figure 12).

Tools and hardware (cable clamps,screws, conical spring washers etc.)for assembly of the cable connectionsystems (cable fittings) are not inclu-ded in the scope of delivery.

The front of the switchgear is accessible for the assembly of thecable connection systems. For thispurpose remove the front-side cablecompartment and fuse compartmentcovers (see Figure 5).

Strictly adhere to the assembly instructions

issued by the cable fittingmanufacturers (including tighte-ning torques) when assemblingthe cable connection systems.

Tighten the cable connection to theouter cone connection bushing(thread M16) only with a tighteningtorque 40±5 Nm as a maximum. Fortightening torque of the holdingscrews take the load carrying capa-city of the cable fittings into account(max. 10 Nm). Tighten the screw connections at thefixing bolts ø 4.5 mm hand-tight.

!

Fig. 10Metal-clad cable fitting, screw contact

Fig. 11Plug contact

Retaining plate

Do not loosen the screw connections.

20 - 35 mmthread reach

Fixing holes M8 for possible fixing of the T-plug (max. 10 Nm,thread reach 10 mm)

Fixing linkø 4.5 mm

Retaining plate

Before starting the work at the cables and prior to their connectionto the switchgear make sure that thecables are earthed.• Position the adjustable cable

holders as desired and fix them(horizontally and vertically ad-justable, screw connection M10with tightening torque 72±7 Nm).

• Screw contact: Adhere to the instructions issuedby the manufacturer.Slightly grease the external sur-face of the copper insert at theconnection bushing and the screw contact (see section 12).

• Plug contact: Adhere to the instructions issuedby the manufacturer.Slightly grease the external sur-face of the copper insert at theconnection bushing.Do not grease the plug contact!

• Place and align the enclosure according to manufacturer’sinstructions. Pay attention to parallelism.

• Attach the entry-plugs to the re-taining plate of the switchgearpanel according to manufacturer’sinstructions. Place the terminatinginserts and tighten them.

• Fix the cables by cable clamps(cable clamps are not included in the scope of delivery).

• Treat the contact surface of theearthing connections (plug enclo-sure and copper shield) accord-ing to section 12. Fix the earthconnection at the cable holderby screws M10 with tighteningtorque 40±4 Nm.

• Check the correct assembly of thecable clamps.

Adjusting the position of the cable holder and

fixing the cable is to be madeso that no additional forces actupon the connection bushing!

Fig. 12Transformer feeder with angle entry-plug (position of cable holder can be changed)

Fig. 13Mains cable connection: fixing of earth connection to the cable holder

Position of cableholder with straightentry-plugs

Switch panel seen from below

Cable conduit

Earth connection

Copper shieldof cable

Earth connection

Bushing

Power supply

Bushing

!

12

13

Additional retaining plates with hard-ware for overvoltage arrester anddouble cable connection are avai-lable from AREVA Sachsenwerk.

Where overvoltage arresters are usedthe switchgear is to be equippedwith additional retaining plates towhich fixing parts for overvoltagearresters can be attached.• Treat the contact surfaces for

earth connections according tosection 12.

• When assembling adhere to theovervoltage arrester manufactu-rer’s instructions!

Also for double cable connection itis necessary to attach two additionalretaining plates to which the secondcable holder can be screwed on depending to its position. • Fixing by cable clamps and earth-

ing as for single connection.• Treat the contact surfaces of the

earth connections according tosection 12.

• When assembling the entry-plugfollow the instructions given bythe manufacturer!

Cover non-used outside coneconnection bushings with voltage-proof terminating caps (not includedin the scope of delivery). The ma-nufacturers of cable connectionsystems offer such voltage-proofterminating caps.

Fig. 14Overvoltage arrester with separate earthing bar

Retaining plate

Retaining plate

Cable holder

Fig. 15Example: Double cable connection

The units situated inside the enclo-sing line are fitted in the ring mainunit as ordered and wired as for asthe terminal strip. Units outside theenclosing line are not supplied withthe switchgear.

The free switching elements of theauxiliary switch (S11) are set in thefactory as shown in the circuit dia-gram. Irrespective of the factorysettings, each element of the auxilia-ry switch may be set as break, makeor wiper contact.

The following is not included in thescope of delivery: - K1A contactor “OFF”- K1E contactor “ON”- S1A push button “OFF”- S1E push button “ON”

6 Low voltage wiring>>

14

Earthing switch Switch disconnector Short-circuit indicatorAuxiliary switch Auxiliary switch

Motor drive control Drive Motor

Off On DC ACAuxiliarycontacts

Transducer

FunctionShort-circuit indicator

1st feeder-H11

2nd feeder-H12

3rd feeder-H13

4th feeder-H14

5th feeder-H15

(terminals 8-12; special variant)Motor at switch disconnectorSwitch disconnectorEarthing switch

-M11 -M12-Q11 -Q81

-Q12 -Q82

-M13 -M14-Q13-Q83

-Q14-Q84

-M15-Q15 -Q85

Auxiliary contact at theearthing switch actuatorAuxiliary switch at switch disconnectorAuxiliary switch at earthing switch

-Q81-S51/52 -G82-S51/52

-S11-S81

-S12-S82

-Q83-S51/52 -Q84-S51/52

-S13-S83

-S14-S84

-Q85S51/52

-S15-S85

Example: Switchgear with five cable feeders

Appliance identifiers for mains cable feeder

Wiring diagram for mains cable feeder (Example: 1st feeder)

453

454

451311

314304

313303

302 452312

301

-H11

L1

L2

L3

N

L1

-Q81- S51

-Q81-S52

8 9 10

M

12 11

M84

10383

72 9244

-M11

14 14

104645244322412

-S81-Q81

91 43

43

44

11 11

-S1A

L -

L+

-K1E -K1E

-K1A

-S1E

K1A

-S11

645244322412

2412

6351433123112311

716351433123

23

24

11

11

12

-Q11

(L+) (L-)

-K1A -K1E

-M11

Terminals 11, 12for make HORSTMANN only- Type GAMMA for

auxiliary voltage 230 V AC- Type ALPHA E for

remote reset by DC voltage

Last change: 05.11.1999

Modifications reserved.

15

The units situated inside the enclo-sing line are fitted in the ring mainunit as ordered and wired as for asthe terminal strip. Units outside theenclosing line are not supplied withthe switchgear.

The free switching elements of theauxiliary switch (S13) are set in thefactory as shown in the circuit dia-gram. Irrespective of the factorysettings, each element of the auxilia-ry switch may be set as break, makeor wiper contact.

The following is not included in thescope of delivery: - K1A contactor “OFF”- K1E contactor “ON”- S1A push button “OFF”- S1E push button “ON”

Earthing switch Switch disconnector FuseAuxiliary switch Auxiliary switch

Tripping device Drive controlDriveMotor Auxiliary contact

Off Off On DC AC tripping

FunctionShunt opening release

1st feeder 2nd feeder-F12

3rd feeder-F13

4th feeder-F14

5th feeder-F15

Motor at switch disconnectorSwitch disconnector with fuse attachmentPush switch at fuse attachmentEarthing switch

-M12-Q12-Q12-S31/32-Q82

-M13-Q13

-M14-Q14

-Q13-S31/32-Q83

-Q14-S31/32-Q84

-M15-Q15-Q15-S31/32-Q85

Auxiliary contact at theearthing switch actuatorAuxiliary switch at the switch disconnectorAuxiliary switch at the earthing switch

-Q82-S51/52

-S12-S82

-Q83-S51/52 -Q84-S51/52

-S13-S83

-S14-S84

-Q85-S51/52

-S15-S85

Example: Switchgear with one cable feeder and four transformer feeders

Appliance identifiers for transformer feeder with integrated fuse attachment

Wiring diagram for transformer feeder with integrated fuse attachment (example: 3rd feeder)

453

454

451311

314304

313303

302 452312

301

N

L1

-Q83 -S52

-Q83- S51

-M13 MM84

10383

-Q13-S32

72

12

92 44

-M13

1414

1042145244322412

-S83-Q82

332 334 344342

91 43

43

44

1111

-S1A

L–

L+

-K1E -K1E

-K1A

-S1E

-K1A

-S13

40252443224122412

341

1)

331

-Q13 -S32

11

12 1414

-Q13 -S31

40151433123112311

71

11 11

12

2135143312311

11 23

2412

-Q12

(L+)

(L-)

-K1A -K1E

C1

C2-F13

2)

1) Not for motor drive,see current path ON!

2) Diode for DC only

Last change: 05.11.1999

Modifications reserved.

16

The switchgear may be equippedwith the following control devices or actuators:

Auxiliary switches S11-S15(switch disconnector)are simultaneously and positivelyactuated with the mechanical postionindicator ON-OFF by the correspon-ding switch disconnector. The auxiliaryswitches are set according to thewiring diagram (other settings arepossible - see page 17).

Auxiliary switches S81-S85(earthing switch)are also simultaneously and posi-tively actuated with the mechanicalposition indicator ON-OFF by thecorresponding earthing switch. Theauxiliary switches are set accordingto the wiring diagram (other settingsare possible - see page 17).

Push switches S31-S32are actuated by the fuse trip linkageat the integrated fuse attachment.

Optional:Motors M11-M15for actuation of the switch discon-nectors.

Shunt opening releases F12-F15

Rated voltage [kV] 12 17.5 24 36

Closing time (for motor actuation)

Opening time(for motor actuation)

[s] ≤ 6

[s] ≤ 0.7

≤ 3

≤ 3

Opening time for tripping device 160 W

Minimum command time “OFF”for trip. device 160 W

[ms] ≤ 34

[ms] ≤ 20

Arcing time (max. value)

Opening time T0

Motor charging time “ON”

Motor charging time “OFF”

[ms]

[ms]

15

38

[s]

[s]

≤ 6

–

–

–

15

–

≤ 3

≤ 3

Motor (power consumption) [W] 150 150 170

Transformer feederStored-energy drive SF

Mains cable feederSnap-action drive SFU

12 17.5 24 36

45

170

Ratedsupply voltage

VDC24 48 60 110 125

Starting current

Operating current

[A]

[A]

13.3

5.5

12.1

2.8

8.4

2.2

4.7

1.2

4.1

1.1

220VAC

120 230

2.5

0.6

6.8

2.2

3.7

1.2

Motor power consumption for SF- and SFU drives

Ratedsupply voltage

VDC24 48 60 110 125

Coil current [A] 6.3 3.2 2.6 1.3 1.2

220VAC

120 230

0.7 0.9 0.5

Magnet coil (160 W) power consumption for the shunt opening release (SF drive)

Switching times

Note:The values given are typical and can be used to dimension the auxiliary power supply. Deviations towards higher and lower values may be possible.

17

Auxiliary switches

The switch function is set in the factory according to the wiring diagram.

Switch disconnector in “OFF” posi-tion - energy store released.

Other switch functions of the auxilia-ry switch can be set by means ofadjustable cams.

• Remove the operating panel (loosen the screws).

• Set the desired switch function.• Re-engage the cams in the

catches.• Check that the cam is inserted in

the changed position.

Fig. 16 Auxiliary switch cam setting

Fig. 17 Possible switch functions of the auxiliary switches (switching program)

Switching device“OFF” “ON”

Auxiliary switch “ON”

Earlybreak contact

Latemake contact

Earlymake contact

Latebreak contact

Wiping contact

Cam position for setting procedure,switching device “OFF”

Cam

View orientation for setting

Ratedsupply voltage

VDC24 48 60 110 220

Switching capacity

Rated short-time current

Time constant T=L/R

Rated continuous current

[A] 8

100 A for a duration of 30 ms

[ms]

[A]

≤ 20

10

4 3 2 1

VAC120 230

10 10

–

Auxiliary switches

Connection of externalcontrol wires

Procedure:• Switch disconnector in “OFF”

position (see section 8)!• Earthing switch in position “ON”

(see section 8)!• Remove operating panel (loosen

the screws).• Remove cable compartment cover

of the cable feeder (see Figure 5).• Connect external control wires to

the terminal strips of the controldevices and actuators accordingto wiring diagram for each feeder.When laying low voltage cablesmake sure that there is sufficientdistance to movable drive parts.

The following wires may be con-nected:

- stranded wires up to 1.5 mm2 withend sleeve

- solid wires up to 2.5 mm2.• Reassemble the operating panel.• Reattach the cable compartment

cover of the mains cable feeder(see Figure 5).

18

Fig. 18Cable laying (external control wires) in the substructure and drive recess

19

High voltage must not beapplied. All active parts mustbe earthed.

Check:• Data on the rating plate against

the required characteristic data.• Rated supply voltage of the con-

trol devices and actuators.• Watch the red-green manometer

indication value (rated filling pres-sure, see section 10).

Check that the operatingability is not affected bytransport or assembly on site

• Operate the switching devices according to section 8.

• Watch the switch position indicators.

Check the cleaning andassembly work

• Cleaning of the switchgear fromdirt due to assembly work.

• Removing of all attached signs,notes, brochures and documentswhich are not longer needed.

• Tightening torques of all screwedconnections made on the site:- cable fitting at outside cone

connection bushing - earthing line- low voltage wiring.

• Phase position(line identifiers of connection bushing and cable must corres-pond to each other).

• Reassembly of all parts whichhave been removed during thework on the site.

Check the control circuits

• Apply the rated supply voltageand check the function of all elec-trical drives of the switching devi-ces.

• Inspect the wiring laid on site.

Insert the fuses

For this, see section 9.

Check the fuse tripping

For this, see section 9.

7 Final work before commissioning >>

20

8 Operation>>

2

1

7 34

Cable 1 Cable 2

21 3

Transf.

5

6 7 3 4

8

34

5

6 7 3 4

8

Cable Transf.

21

Fig. 19Operating panel for type FBA/FBE

Fig. 20Operating panel for type FBT

1 Switch position indicatorswitch disconnector “ON” - “OFF”in mains cable feeder

2 Opening for plug-in lever switch disconnector in mains cable feeder

3 Switch position indicator earthing switch “ON” - “OFF”

4 Opening for plug-in leverearthing switch

5 Switch position indicatorswitch disconnector in transformer feeder

6 Opening for plug-in lever switch disconnector in transformer feeder

7 Slide for non-force interrogation inter-locking earthing switch/switch discon-nector

8 Rating plate

Position: Condition:Switch disconnector Earthing switch

Cable compartment or fuse cover

Switch disconnector

Earthing switch

ON

OFF

–

–

ON

OFF

Locked

Unlocked

Locked

Unlocked

Locked

Locked

–

–

Unlocked

Locked

Cable compartment or

fuse cover removed Locked Locked –

Interrogation interlock

In the ring main cable unit, the following interlocks are integrated as standard:

21

Mains cable feeder

The following describes the switching operations.

Complete the ON-OFF movements up to the end

(stop). Never let go the plug-in lever before completing theswitching operation (risk ofinjury).

Switching the switch dis-connector in the mainscable feeder

Switch disconnector “OFF”.

Earthing switch “OFF”.

• Insert the plug-in lever (black).• Operate in one impetus the

plug-in lever clockwise (approx.95°) until the closing is com-plete. For this, support the swit-ching operation with one hand inthe middle of the plug-in lever.

• Pull off the plug-in lever imme-diately after this operation.

Switch disconnector “ON”.

Earthing switch “OFF”.

The opening is performed in an ana-logous manner (see Figure 21).

Switching the earthingswitch in the mains cablefeeder

Switch disconnector “OFF”.

Earthing switch “OFF”.

• Open the slide for the plug opening.

• Insert the plug-in lever (red). • Operate in one impetus the

plug-in lever clockwise (approx.95°) until the closing is com-plete. For this, support the swit-ching operation with one hand inthe middle of the plug-in lever.

• Pull off the plug-in lever imme-diately after this operation.

Switch disconnector “OFF”.

Earthing switch “ON”.

The opening is performed in an ana-logous manner (see Figure 22).

!

2

ON OFF

Fig. 21Switching the switch disconnector in themains cable feeder

2 3

Fig. 22Switching the earthing switch in the mainscable feeder

ON OFF

Slide to the left

22

Transformer feeder withintegrated fuse attach-ment

The following describes the switching operations.

Complete the ON-OFF movements up to the end

(stop). Never let go the plug-in lever before completing theswitching operation (risk ofinjury).

Switching the switch dis-connector with stored-energy drive and all-polefuse tripping in the trans-former feeder

(Transformer feeder without all-polefuse tripping see page 28).

Switch disconnector “OFF”.

Earthing switch “OFF”.

• Insert the plug-in lever (black).• Operate in one impetus the

plug-in lever anticlockwise untilthe switch latch is locked(approx. 95°). When doing so,support the switching operationwith one hand at the middle of theplug-in lever (this charges thebreaking spring).

• Then, operate in one impetus the plug-type lever clockwise (approx. 115°) until closing iscomplete (this charges and re-leases the closing spring).

• Pull off the plug-in lever imme-diately after this operation.

Switch disconnector “ON”.

Earthing switch “OFF”.

Opening (see Figure 23):

• Insert the plug-in lever.• Operate it in one impetus

(approx. 20°) anticlockwise untilthe opening is complete.

Switching the earthingswitch in the transformerfeeder

Switch disconnector “OFF”.

Earthing switch “OFF”.

• Open the slide for the plug opening.

• Insert the plug-in lever (red). • Operate in one impetus the

plug-in lever clockwise (approx.95°) until the closing is com-plete. For this, support the swit-ching operation with one hand inthe middle of the plug-in lever.

• Pull off the plug-in lever imme-diately after this operation.

Switch disconnector “OFF”.

Earthing switch “ON”.

The opening is performed in an ana-logous manner (see Figure 24).

!3

OFF

ON

Charging

Fig. 23Switching the switch disconnector in thetransformer feeder

3

Fig. 24Switching the earthing switch in the transformer

ON OFF

Slide to the left

Switching on/off theswitch disconnector withthe auxiliary hand crank

If the ring main unit is equipped withmotor drive (optional) it is also possi-ble to locally operate the switch dis-connector using an auxiliary handcrank (if the rated supply voltagefails, for example).

Operate the auxiliary hand crankclockwise (approx. 31 revolutions)for closing and up to the stop(switch “OFF”) for opening.

Locking the openings forplug-in levers

It is possible to lock the openings forplug-in levers against unauthorizedoperation (optional).

23

Fig. 25Switching on/off the switch disconnector using the auxiliary hand crank

Fig. 26Locking of the openings for plug-in levers

Shackle diameter min. 6 mm

24

Short-circuit indicator

The switchgear may be equippedwith short-circuit indicators.

Principally, there are two ways ofusing short-circuit indicators:- Short-circuit indicators which are

directly mounted on the single corecables. In this case it is necessaryto provide inspection glasses inthe cable compartment cover (optional).

- Short-circuit indicators within theinstrument recess (see Figure 27).The phases L1, L2, L3 are separate-ly indicated.

On request, it is possible to providethe following for the short-circuit indicators:- manual reset facility- automatic reset facility- remote reset facility- remote signalling contact- earth fault indicator

Note the specifications given by theshort-circuit indicator manufacturer!

Checking the dead state

The electronic voltage information system IVIS with integrated displayunit (three lightning arrow symbols)indicates the dead state of a feeder.

The voltage information system IVISindicates faults by interrupted arrowsymbols (these symbols disappear incase of dead state).

In such a case the switchgear mayremain in operation, but correctiveactions have to be agreed with themanufacturer.

The response conditions for aphase comparator with LRM inter-face are met at the IVIS measure-ment sockets.

Note the Operating Instructions forIVIS (no. 531 751)!

Alternatively, you can also establishthe dead state of the feeder with acontinuous voltage indicator (see Figure 29). Plug sockets for the con-tinuous voltage indicator (HR system)are then located in the instrumentrecess.

The indication is within the range ofthe tolerances required by VDE 0682,Part 415 or IEC publication 61243-5.

Always check all three phases L1,L2 and L3. Note the manufacturer’sinformation for the continuous voltageindicator.

If you want to check the voltage indicator note the manufacturer’s information for the testing instru-ments.

Phase comparison withIVIS

It is possible to carry out a phasecomparison using a phase compara-tor type MS 100 (see Operating Instructions no. 531 753).

Fig. 27 Voltage information system IVIS and short-circuit indicator in the instrument recess

Fig. 28 Plug sockets for the continuous voltage indicator in the instrument recess

Fig. 29Example for a continuous voltage indicator

25

Before you attempt to remove covers from the

switchgear remove the voltagefrom and earth any parts whichmay be alive and becomeaccessible by opening!Adhere to the relevant safetyregulations for any work on theswitchgear!

Removing and reassemb-ling the cable compart-ment or fuse covers

Take into account the interlock con-ditions (see page 20) before you remove cable compartment or fusecovers!Removing and reassembling of thecable compartment or fuse covers isto be made as shown in Figure 30.

Fig. 30Removing and reattaching the cable compartment or fuse cover

9 Work on the switchgear>>1.Earthingswitch “ON”

2.Unlock andpull off thekey.

3.Lift the coverand remove it.

Frontside L-bars can be remo-ved panel by panel for erecting,installation and wiring.

* When attaching the cover make sure that all hooks are inserted completely so that they can be locked.

ReattachRemove

Unlock *

!

Replacing fuses (trans-former feeder with inte-grated fuse attachment)

Fuse links are not included in thescope of delivery. For informationsee the engineering document “Selection of HV HRC fuse links for distribution transformers“ (no. 531 401).

Because earthing switchesare arranged before and after thefuses it is possible to replace thefuses without the need of insulat-ing auxiliary means.IEC publication 60282-1 recom-mends to replace all three fuse linkseven if only one fuse link of the all-pole fuse tripping has been blown ina three-phase system.

Tripping of a fuse is mechanicallyindicated in the fuse symbol on thefuse cover (red mark).

• Open the switch disconnector.• Close the earthing switch.• Unlock the fuse cover.• Remove the fuse compartment

cover.• Pull off the fuse link at the grip

surfaces (see Fig. 33), do notturn.

• Remove the grip end with fuse linkusing both hands (see Fig. 35).

• Prepare the new fuse link for replacing:

- Loosen the machine screw in theannular spring of the grip end(see Fig. 36).

- Pull out the fuse link by slight turning.

- Treat the contact surfaces at thegrip end and at the brand-newfuse link according to section 12.

- Insert the brand-new fuse link withthe contact side having the strikerinto the contact of the grip end byslight turning (see Fig. 36).

- Lock the fuse link against pullingout by slight tightening of the machine screw.

• Insert the fuse link.• Push the fuse link in without

turning.• The cam at the right grip surface

must be catched from the stop ofthe insulating tube (see Fig. 37).

• Reassemble the fuse cover

26

Fig. 31Indication of fuse tripping (red mark)

Fig. 32 It is recommended to replace always all threefuse links.

Fig. 33Do not turn the grip surfaces.

Fig. 34 At first pull out the fuse with one hand

Fig. 35Removing the old and inserting the new fuse.

Replacing short fuse linksfor switchgear with fusegauge e=442 mm

Extension tubes are available as spe-cial accessories for the use of fuselinks with e=292 mm in switchgearhaving a rated voltage 24 kV, but isoperated with a rated voltage of10 kV. The fuse links are not included in the scope of delivery.For information see the engineeringdocument “Selection of HV HRCfuse links for distribution transfor-mers“ (no. 531 401).

Replacing of fuse links as describedabove.

• Treat the contact surfaces (brand-new fuse link, extension tube andgrip end) according to section 12.

• Insert the brand-new fuse link withthe contact side having the strikerinto the contact of the grip end byslight turning. Use a screwdriverto slightly turn the machine screw(fixing of the fuse link in the gripend). Turn the extension tube onthe opposite contact side havingno striker.

27

Fig. 36 Assembly of the fuse link to the grip end

Fig. 38 Assembly of short fuse links

Fig. 39Grip end connected to fuse end and extension tube

Fig. 37Cam at the right grip surface catched

Machine screw

Annular spring

Extension tube

Fuse link

Striker side

Grip end

Striker side

Checking the all-pole fusetripping

• With the switch disconnector in“ON” position, it is possible tocheck the all-pole tripping throughthe tripping linkage using a trip-ping pin ø ≤ 2,1 mm, L > 80 mm,which is inserted through the ope-ning in the fuse covering up to thestop. The tripping pin is not inclu-ded in the scope of delivery.

Transformer feeder withoutall-pole fuse tripping

If the transformer feeder has no all-pole fuse tripping a label indicatesthis condition.

The label is located close to the fusesymbol on the operating panel.

The response of one fusedoes not cause a tripping of aswitch disconnector.

In this case the switch disconnectoris equipped with a snap-action driveSFU and is operated as a switch dis-connector in a mains cable feeder:

Closing (approx. 95°) as described on page 21.

Opening (approx. 95°) as described on page 21.

28

Openingø 2,3Pin ≤ 2,1

Indicator red

Fig. 40Checking the all-pole fuse tripping

Cable testing (with livebusbar)

Procedure of cable testing describedfor T-plugs.Other cable fittings require an analo-gous procedure. • Adhere to the assembly instructi-

on for the cable fittings!• Switch off the mains cable feeder

in the ring main unit, that meansswitch disconnector in “OFF” posi-tion (see page 21).

• Switch the mains cable feeder inthe mate station dead, that meansswitch disconnector in the matestation in “OFF” position.

• Earth the mains cable feeder, thatmeans earthing switch in “ON”position (see page 21).

• Remove the cable compartmentcover (see Fig. 30).

• Connect the line from the testinginstrument to the test adapter(note manufacturer’s instructions).

• The distance of bare parts of thetest adapter to the earthed sub-structure of the switchgear mustbe 90 mm as a minimum.

• Eliminate the earth connection by simulation of an assembledcable compartment cover (see Fig. 41B).

• Bring the earthing switch in “OFF”position.

In this condition operationof the switch disconnec-

tor is not interlocked! Attachthe prohibition sign to DIN 4844,ISO 7010 “DO NOT OPERATE”to the operating panel close tothe opening for the switch dis-connector plug-in lever!

Additional lock for mainscable feeder (option) forcable testing

An extra interlock may be providedfor cable testing, which preventsthe switch disconnector from beingswitched on as long as the earthingswitch is opened.• Dielectric test of the cable. Test

duration 15 minutes as a maximum.

• After the dielectric test bring theearthing switch to the “ON” posi-tion (see page 21).

• Dismantle the test adapter.• Provide the cable fitting with the

terminating plug according to

manufacturer’s instructions.• Insert the double-bit key and turn

it anticlockwise.• Reattach the cable compartment

cover (see Fig. 30).

29

!

Fig. 41A: Cable testing at T-plugB: Simulation of assembled cable compartment cover

Only allowed for cabletesting

1 Dismantle the cap and the terminating insert

2 Attach the test adapter

3 Simulate the interlock, earthing switch “OFF”

1

2

3

A

B

Rated voltage Test DC voltageUr (kV) max. (kV)

First test Repeat test7.21217.524

2948

2034

6096

4267

36 108 76admissible limits for the switchgear

Cable sheath testing

If there are no documents availablewhether the cable connection systemis approved for cable sheath testingor not ask the manufacturer of thecable connection system before-hand.

When testing the cable sheath make sure that the

connector housing has no con-tact with earthed switchboardparts. The connectors must not havecontact to each other. If requireddisconnect the connectors.

• For cable sheath testing discon-nect the earth connections (cop-per shield) from the cable holder.

• For identification of damages atouter plastic coverings apply atest DC voltage of 5 kV as a maxi-mum between Cu shield of thecable and earth.

• After completed cable sheathtesting reassemble the earth con-nection (Cu shield) at the cableholder (see section 12).

30

Fig. 42Cable sheath testing principle

!

Switch-gear

31

p SF6

Grüne s(Betriebbereic h

Mano m

Füllvent

Mano manschlukupplun

-23 C0 C20 C40 C60 C

0

00

00

Fig. 43Attachment of pressure gauge in the instrument recess

Green area(operatingrange)

Filling valve

Pressuregaugecoupling

Pressuregauge

General information

Type of insulating gas:Sulphur hexafluoride SF6 accordingto DIN VDE 0373 or IEC 60376.

The switchgear comes ready-to-operate with operative gas filling whichis designed for the whole service life.The container for the switchgear isdesigned as “sealed pressuresystem” according to the definitiongiven in the IEC publication 62271-200. The sealed pressure systemconcept makes any maintenance ofthe in-sulating gas filling unnecessary.Under normal operating conditionsaccording to DIN EN 60694 orIEC publication 60694 a service lifeof 30 years of the hermetically sealedpressure system can be expected.

• Do not let out insulating gas fromthe pressure container of theswitchgear.

Do not bore holes into the pressure container!

• Do not open the pressure container.

• The container must be kept freefrom foreign metallic deposits.

• It is absolutely necessary to avoidany crevice corrosion.

• Repair work at the high voltagepart can only be done in the manu-facturer’s works.

Rated filling pressure(operating pressure)

The rated filling pressure is 0.030 MPaat 20 °C.

In principle, operation of the switch-gear is only allowed when the pres-sure is within the green area. If therated filling pressure has been drop-ped down to atmospheric pressureat ambient temperature operation ofthe switchgear is allowed in specialcircumstances. In these cases, how-ever, the rated insulation level of theswitchgear with rated voltage 24 kVis only 24 kV, rated impulse with-stand voltage 95 kV (for switchgearwith rated voltage 36 kV the ratedinsulation level is 36 kV, rated im-pulse withstand voltage 145 kV).For switchgear 12 kV, then the ratedinsulation level is 12 kV, rated im-pulse withstand voltage 75 kV.

The temperature value necessary forpressure indication is to be measuredclose to the switchgear.

The filling valve becomes accessibleby disconnecting the pressure gaugecoupling from the filling valve. Thefilling valve closes automatically whenthe pressure gauge coupling is dis-connected.

Never open other screwedconnections, otherwise

there is the risk of gas loss.

10 Insulating gas, container>>

!

!

32

Switchgear type FBA, FBE, FBTneed no maintenance over more than20 years of operation.

The admissible number of operationsare generous designed so that theywill not be reached at operatingtimes of more than 20 years undernormal conditions.

If nevertheless the admissible numberof operations should be exceeded inspecial circumstances, please con-tact the manufacturer.

Depending of operational stress andconditions we recommend to inspectthe switchgear visually every fouryears.

In case dirt depositions are foundthe switchgear must be cleaned byexpert staff.

In case of doubts or deviations fromthe correct condition of the switch-gear contact the manufacturer.

11 Admissible number of operationsfor the switch disconnectors >>

Mains cable feederRated normal current 400 A

Mains cable feederRated normal current 630 A

Bre

ak n

umbe

r n

Bre

ak n

umbe

r n

Breaking current Ia (A)Breaking current Ia (A)

1000

500

100

50

10

1000

500

100

50

10

10 50 100

400

500

1000

5000 10 50 10

0

500

630

1000

5000

Bre

ak n

umbe

r n

Bre

ak n

umbe

r n

Breaking current Ia (A) Breaking current Ia (A)

Transformer feederType FBA, FBT 12 kVTake-over current 3000 A

Transformer feederType FBA, FBT 24 kVTake-over current 800 A

1000

500

100

50

10

1000

500

100

50

20

10

10 50 100

500

800

1000

500010 50 10

0

500

1000

3000

5000

Fig. 44Charts on admissible number of operations

Maintenance sequencefor sliding contact sur-faces (e.g.: fuse link)

• Cleaning with non-fuzzy cloth, incase of heavy contamination usedetergents.

• Apply a thin and uniform film ofcontact lubricant KL.

Treating screw-fastenedcontact surfaces

Pre-treat the contact surfaces immediately before tightening.

Material of Pre-treatmentcontact surfaces

Copper silver-plated (1) or copper alloy (4)silver-plated

Copper or (1)copper alloy (2)

(4)

Steel or (1)zinc coated steel (3)

(4)

(1) Cleaning- with non-fuzzy cloth,- in case of heavy contamination

with detergent(2) Polish surface bright - with abrasive cloth (grain size 100

or less) or- with wire brush which is only

allowed to be used for copper.(3) Polish surface bright, remove

existing passivation film- with abrasive cloth (grain size

100 or less) or- with wire brush which is only

allowed to be used for steel.(4) Treat with contact lubricant KL- Apply lubricant to both contact

surfaces so that the space bet-ween the contact surfaces is filled after tightening.

Auxiliaries

You can purchase the auxiliaries fromAREVA Sachsenwerk.

Order no.

Contact lubricant KL S 0081570.5 kg can

Detergent S 0081521 l can

Detergent for outside cone connection bushing: HAKU 1025-700Chemische Werke KlutheGottlieb-Daimler-Str. 12D-69115 Heidelberg

The use of other auxiliaries is not allowed.

Facilities, devices andaccessories

Order no.

Plug-in lever for switch dis-connector AGS C01132-01

Plug-in lever for earthing switch AGS C01133-01

Double-bit key AGS 434101-01

Auxiliary hand crank for motor drive AGS 617831-01

Short-circuit indicator *(instrument recess) –

Short-circuit indicator(on XLPE cable) –

For IVIS equipment:phase comparator MS100 AGS C26320-01

* Transducers at the outside cone connectionbushing can not be retrofitted.

Disposal after theservice life

There is a disposal guide availablefor disposal of switchgear typesFBA, FBE and FBT. On request theService Center in the manufacturer’sworks will carry out the disposal. Address for return:

12 Appendix>>

33

34

Notes:

AREVA Sachsenwerk GmbH · Rathenaustraße 2 · D-93055 Regensburg · Postfach 10 01 55 · D-93001 RegensburgTelefon +49 (0)9 41/46 20-0 · Telefax +49 (0)9 41/46 20-4 18

Our policy is one of continuous development.Accordingly the design of our products may changeat any time. Whilst every effort is made to produceup to date literature, this brochure should only beregarded as a guide and is intended for informationpurposes only. Its contents do not constitute an offerfor sale or advice on the application of any productreferred to in it. We cannot be held responsible forany reliance on any decisions taken on its contentswithout specific advice.

AREVA T&D

T&D Worldwide Contact Centre

contact.centre@areva-td.com

www.areva-td.com

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