T&D

MEDIUM VOLTAGE SWITCHGEAR

Installation Instructions

WSGas-Insulated Switchgearup to 36 kV

Installation InstructionsNo. 531 596Edition 01/01

>>

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, this electronic version of the operating instructions is provided to the customer at his/herrequest for information only. None of our products may be commissioned, operated, serviced, repaired ordecommissioned on the basis of this electronic version.

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.

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

3

1 Regulations and provisions 4

2 Design 5

3 Installation of the first switch-gear panel 6

4 Lining up additional panels 7

5 Screw-fastening the switch-gear panels 8

6 Installation of the intermediate frame for one or two current transformer modules in line with the busbar 9

6a Installation of the intermediate frame on the busbar endfor busbar earthing switch and single or double cable connection 10

6b Installation of intermediate frame on busbar endfor one or two modules with fully insulated busbar connection 11

7 Installation of side panel 12

8 Fastening the panels to the foundation bar 13

9 Installation of busbar sections 14

10 Gas compartment and gas line concept 16

11 Gas compartment connections 17

12 Installation of IGIS 18

13 Pressure transmitters 19

14 Activating desiccant, screw-fastening mounting cover 20

15 Evacuation of the busbar gas compartments, filling gas compart-ments to rated filling pressure 21

16 Gas pressure monitoring via pressure gauge 22

17 Screwing down the earth conductor, connecting external control lines 24

18 High-voltage connection 25

19 Screw-fastening the cover plates (rear side of panel) 29

20 Final operations before commissioning 30

21 Appendix 31

Table of Contents>>

Only specialized electri-cians (as provided by DIN 31000 or VDE 1000,sect. 3.6.1) are allowed to install, assemble and connect the switchgear.

The following regulations must beobserved with regard to transport,installation, assembly andconnection of the switchgear:• DIN VDE 0101

DIN EN 60298 or theIEC Publication 60298 (supersedes VDE 0670 part 6)

• Provisions for the prevention ofaccidents BGV A2 of theindustrial injuries insuranceinstitution "Precision mechanicsand electrical engineering"

• Code of practice "SF6 switch-gear" of the industrial injuriesinsurance institution "Precisionmechanics and electricalengineering".

Operators outside of the FederalRepublic of Germany should:- consider these provisions for the

prevention of accidents andregulations as a basis;

- apply the appropriate locallyvalid provisions;

- take any measures which mightbecome necessary on site.

Correct execution of theassembly is a prerequi-

site for the switchgear's opera-tional reliability and long ser-vice life. The information givenin these installation instructionsmust be complied with. Non-compliance with these instruc-tions compromises the warrantyclaims!

Packaging and transport

Delivery is effected in terms of singleswitchgear panels ready for connec-tion. Bus couplers, cross couplersand busbar sectionalizers are, as arule, delivered as a unit (two panels).Ring circuits connecting the variouspanels are established on site.

• Open packaging.Panels on pallets protected by PE film.

• For sea-worthy export, thepanels are packed in sealedaluminium film with desiccantand closed wooden base (alsofor container transport).

• In case of air transport, thepanels are packaged in woodencrates with closed wooden basesand with a protective PE filmhood (dust protection) or inwooden crates, also with closedwooden base, however withoutprotective hoods (dust protection).

1 Regulations and Provisions>>

4

!

5

2 Design>>

1Areas of the various assembly steps and attachmentsDesign: WSB, double busbar

Busbar compartment 2

Connection to gas compartment

Panel screw-fastening

Desiccant

Busbar compartment 1

Connection to gas compartment

Panel screw-fastening

Desiccant

Earth conductor

Panel supporting structure

Caps

High-voltage terminal

Cover plate

Cable iron

Panel fastening

Low-voltage cubicle

External control lines

6

3 Installation of the first switchgear panel>>

Installation of a switch-gear panel with transportdevice

1. Insert transport device (includedunder "transport aids" in Accesso-ries) in panel supporting structure,and screw-fasten.

Move panel by rolling ittowards the installation

area over the foundation barstructure parallel using thetransport device. Pay attentionto flooring ducts - risk of acci-dents! To reduce the accidenthazard, have the panel rolled tothe installation area over thefoundation bar structure by twofitters.

2. Lower panel using the transportdevice. Release transport devicefrom the panel supporting structure.3. For the distance dimension betweenwall and panel, please refer to theinstallation plan. Align the rear ofthe panel supporting structure to theouter edge of the foundation barstructure.

Do not yet screw-fasten thepanel to the foundation bar struc-ture. This would rule out subsequentalignment or readjustment of thepanel.

!

2Insert and screw-fasten transport device in panel supporting structure

3Transport of panel to installation surface

4Installation of first panel

5Remove transport covers and mounting cover

Rear of panel flush withfoundation bar

refer toinstallation

Lifting

Remove transportcover

Remove mounting cover

Supporting structure

7

4 Lining up additional panels>>Insert adjustable bridgeelements

1. Adjustable bridge elements under"transport aids" in accessories.2. Place bridge elements over thefoundation bar design, adjust andclamp one side of the bridgeelements with the foundation bar(wing nut screw coupling).

Roll the individual panelsto the installation area

using the transport device, overthe bridge elements and paral-lel over the foundation barstructure. Pay attention to floo-ring ducts! Risk of accidents.

3. Move panel by rolling it towards thepanel already installed leaving adistance of approx. 0.5 m.4. Coat sealing surfaces (refer to sect. 21).5. Lower panel using the transportdevice. Release transport devicefrom the panel supporting structure.6. Lift panel via the four setscrews inthe panel supporting structure.7. Insert transport trolley (includedunder "transport aids" in accesso-ries) in panel supporting structure.Engage four connecting pins on thetransport trolley in the left and rightangular brackets of the panel sup-porting structure.

!

6Lining up additional panels

7“Lifting” the panel via the four setscrews

8Insert transport trolley in panel supporting structure

Transport device

Setscrew

Panel supportingstructure

Foundation barAdjustable bridge elements

Transport trolley

Panel supportingstructure

8

5 Screw-fastening the switchgear panels>>

1. Coat the sealing surfaces betweenthe busbar compartments and thetoroidal sealing ring with SF6 multi-purpose lubricant MS (refer to sect.21). Insert toroidal sealing ring.2. Push panel to the panel alreadyinstalled.3. Lift panel via the four setscrews inthe panel supporting structure.4. Release transport trolley from thepanel supporting structure.5. Align panel via the four setscrews inthe panel supporting structure (referto Fig. 7) with the busbar sealingsurfaces.6. Align panels with the panel front(front cover / circuit-breaker area)using a rule.7. Screw-fasten panels to each otheralong the busbar sealing surfaces:- without busbar cladding: Tighten

screw couplings M8 with atorque of 36 ± 4 Nm

- with busbar cladding: Tightenscrew coupling M8 (not greased)with a torque of 20 + 4 Nm.

9Panel screw-fastening

10Panel screw-fastening (with busbar compartment cladding)

11Panel screw-fastening (without busbar compartment cladding)

Sealing surfaces

Sealing ring

Sealing surfaces

Sealing ring

Panel 2

M 8 x 3020 + 4 Nm

Panel 1

M 8 x 2536 ± 4 Nm

Sealing surfaces

Panel 2

Q SF6-Multi-purpose lubricant MS

Panel 1

1. Individual components of intermedi-ate frame in switchgear accessories.2. Screw-fasten current transformermodule with left and right adjacentpanel.3. Screw-fasten individual componentsof intermediate frame to each other.Tighten screw couplings M8 x 16with a torque of 36 ± 4 Nm.4. "Draw in " setting nuts M8 to thefront longitudinal sections and .Screw-fasten front covers. Tightenscrew couplings M8 x 16 with atorque of 36 ± 4 Nm. Insert mag-netic shims.5. Drill bore-holes Ø 10 H11 in panelsupporting structure of the left andright adjacent panel. "Draw in"setting nuts M8 to the "inside" of the adjacent panels.6. Slip completely screw-fastenedintermediate frame between the twopanels. Align intermediate framewith front covers along the lined-upswitchgear units.7. Insert spacers (12 mm) and washers(1 mm) between the lower longitudi-nal sections and and the panelsupporting structure. Tighten screwcouplings M8 with a torque of 36 ± 4 Nm.8. Screw-fasten upper longitudinalsections and via two angularbrackets each to the left and rightadjacent panel. Tighten screwcouplings M8 on front and rear jackrings with a torque of 36 ± 4 Nm.Tighten screw couplings M10 on theupper longitudinal section with atorque of 72 ± 7 Nm.

9

6 Installation of intermediate framefor one or two current transformer modules in line with the busbar

>>

14Intermediate frame

12Top mounting, front jack ring

13Top mounting, rear jack ring

15Bottom mounting, panel supporting structure

Front longit. sections

Lower transv. section

Lower longit. sections

Upper longit. sections

Upper transv. sections

Spacer

Washer

Panel supportingstructure

M 8 x 25

Jack ringM 8 x 16

M 10 x 20

A10washers

A10washers

M 8 x 16

M 10 x 20

drillingØ 10 H11

1. Individual components of intermedia-te frame in switchgear accessories.2. Screw-fasten individual componentsof intermediate frame to each other.Tighten screw couplings M8 x 16with a torque of 36 ± 4 Nm.3. "Draw in " setting nuts M8 to thefront longitudinal sections. Screw-fasten front covers. Tighten screwcouplings M8 x 16 with a torque of36 ± 4 Nm. Insert magnetic shims.4. Drill bore-holes Ø 10 H11 in panelsupporting structure of the adjacentpanel. "Draw in" setting nuts M8 tothe "inside" of the adjacent panel.Insert spacers (12 mm) and washers(1 mm) between the lower longitu-dinal section and the panel suppor-ting structure. Set in screws M 8 x 25.5. Align intermediate frame with frontcovers along the lined-up switchgearunits. Tighten screw couplings M8on the lower longitudinal sectionwith a torque of 36 ± 4 Nm.6. Screw-fasten the upper longitudinalsection via two angular bracketsto the adjacent panel. Tighten screwcouplings M8 on front and rear jackring with a torque of 36 ± 4 Nm.Tighten screw couplings M10 on theupper longitudinal section with atorque of 72 ± 7 Nm.

18Installation of intermediate frame

16Top mounting, front jack ring

17Top mounting, rear jack ring

19Bottom mounting, panel supporting structure

Side frame

Longitudinal section

Lower transv. sections

Lower longit. section

Upper transv. sections

Upper longit. section

Spacer

Washer

Panel suppor-ting structure

M 8 x 25

Jack ring

A10washers

A10 washers

M 10 x 20 M 10 x 20

M 8 x 16

M 8 x 16

drilling Ø 10 H11

refer to installa-tion of side panel

10

6a Installation of theintermediate frame onthe busbar endfor busbar earthing switch and single or double cableconnection

11

6b Installation of inter-mediate frame on bus-bar end for one or two functional unitswith fully insulated busbarconnection

1. Individual components of intermedi-ate frame in switchgear accessories.2. Screw-fasten functional unit for fullyinsulated busbar connection.3. Fasten side frames and , lowertransverse sections and , uppertransverse sections and andthe intermediate bar together.Tighten screw couplings M8 x 16with a torque of 36 ± 4 Nm.4. "Draw in " setting nuts M8 to thefront longitudinal sections. Screw-fasten front covers. Tighten screwcouplings M8 x 16 with a torque of36 ± 4 Nm. Insert magnetic shims.5. Drill boreholes Ø 11 in panelsupporting structure. Insert screwcouplings M8 x 50.6. Align intermediate frame with frontcovers along the lined-up switchgearunits. Tighten screw couplings M8on the lower longitudinal section andthe intermediate bar with a torqueof 36 ± 4 Nm.7.Screw-fasten the upper longitudinalsection via an angular bracket tothe adjacent panel. Tighten screwcouplings M8 on front jack ring witha torque of 36 ± 4 Nm.Tighten screw couplings M10 on theupper longitudinal section with atorque of 72 ± 7 Nm.8. Screw-fasten transverse bracket .Tighten screw couplings M8 x 16 forconnection to the functional unitwith a torque of 36 ± 4 Nm.9. Insert intermediate bar in sideframe and screw-fasten it.

21Installation of intermediate frame

20Top mounting, front jack ring

22Bottom mounting, intermediate bar,panel supporting struture

Side frame

Lower transv. sections

Upper transv. sections

Intermediate bar

Upper longit. section

Transverse bracket

Intermediate bar

U section to installation

of side panel

Panel supp. structure

M 8 x 50Intermed. bar

Jack ring

A10washers M 10 x 20

M 8 x 16

refer to installation of side

refer to installationof side panel

M 8 x 16washersA10

drilling Ø 10 H11

11

11

12

7 Installation of side panel>>1. Side panel, cover, angular bracket,U section and hardware in switchge-ar accessories.2. Drill bore-holes Ø 10 H11 in panelsupporting structure . "Draw in"setting nuts M8 to the "inside" of theadjacent panel.3. Screw-down U section . Tightenscrew couplings M8 with a torque of36 ± 4 Nm. "Draw in" setting nutsM8 to U section.4. Screw-fasten clip to rear and frontjack ring. Tighten screw couplingsM8 with a torque of 36 ± 4 Nm.5. Screw-fasten angular bracket to the two clips. Tighten screwcouplings M10 with a torque of72 ± 7 Nm. "Draw in" setting nutsM8 to angular bracket.6. Screw-fasten side panel . Tightenscrew couplings M8 with a torque of36 ± 4 Nm.7. Screw-fasten cover . Tightenscrew couplings M8 with a torque of36 ± 4 Nm.8. If the side panel is being installedwith IGIS module, the cover isscrewed down after laying thetransmitter signal lines.9. Close boreholes in side panel andcover using caps Ø 32.

25Installation of side panel

23Top mounting, front jack ring

26Bottom mounting, panel supporting structure

Panel supporting structure

U section

Angular bracket

Side wall

Cover

Settingnuts

Panel supp. structureSide panel

Jack ring

M 10 x 20M 8 x 16

drillingØ 10 H11

24Top mounting, rear jack ring

M 10 x 20

A10washers

M 8 x 12

13

8 Fastening the panels to the foundation bar>>

1. Before fastening the panel, makesure that all the previous steps havebeen accomplished.2. Drill four fastening points Ø 8.5 mmthrough the panel supporting struc-ture in the foundation bar. Tap athread M10.3. Slip any required shims in directlybesides the fastening points. Relievesetscrews (turn back).4. Screw-fasten panel supportingstructure with foundation bar.Tighten screw couplings M10 with aminimum torque of 40 Nm (appliesonly to ratchet bolts with a sufficientthread depth of 8 mm).

27Fastening the panels to the foundation bar

Fastening points Panel supporting structure

M 10

14

9 Installation of busbar sections>>Standard panel

(Busbar rated (service) currentup to 2500 A)1. Bushings, busbar sections andhardware in switchgear accessories.

In case of busbar compart-ment cladding, coat grooves in bus-hing, in flange, and toroidal sealingrings with SF6 multi-purpose lubri-cant MS (refer to sect. 21).

The individual cladded compart-ments are sealed optimally againsteach other by means of toroidalsealing rings and coating with SF6

multi-purpose lubricant MS.

2. Insert toroidal sealing rings.Screw down bushings and flanges.Tighten screw couplings M6 with atorque of 8 ± 1 Nm.3. Coat contact surfaces with contactlubricant KL (refer to sect. 21).

Contact surfaces must not get into contact with screw lockingcompound "Loctite".If the two agents are mixed, contactwill be impaired.

4. Wet threads with screw lockingcompound "Loctite" (refer tosect. 21).5. Insert busbar sections, takingaccount of the installation positionof the two disc springs located oneither side, "center" between thebushings and screw down. Tightenscrew couplings M10 with a torqueof 10 Nm.

6. The busbar is screw-fastened to apost insulator on the left and rightend panels, and in the case of buscoupler panels.7. Check disconnector blades for"hitting" the fixed contact on thebusbar (for switching on the dis-connector, refer to the operatinginstructions, section 4.1.2). Due to

the jerky movements of the discon-nector blades, it may not bepossible to adhere to the dimension5 +2/-4. The following setting isadmissible in these cases: If thedistance at 9.5 revolutions of theactuating crank amounts to≤ 10 mm, then the disconnectorblade may touch the stop of thecontact during the last 0.5 revolutionof the actuating crank.

28Installation of busbar sections; drawing shows central panel, viewed from the mounting cover

VV Contact lubricant KLQ SF6-Multi-purpose lubricant MSO Screw locking compound "Loctite"

1) only with BB comp. cladding

Disc springs

M 10 x 2510 Nm

1250 A

1250/1600 A

2000/2500 A

M 8 x 2520 ± 2 Nm

M 6 x 258 ± 1 Nm

1)Q

O

VV

VV

5 +2

/–4

Supplementary panel

(Current transformer module inline with the busbar)1. Bushings, busbar sections andhardware in switchgear accessories.2. Remove mounting cover from thechamber.3. Screw down bushings and flanges.4. Coat contact surfaces with contactlubricant KL (refer to sect. 21).

Contact surfaces must not get into contact with screw lockingcompound "Loctite".

5. Wet threads with screw lockingcompound "Loctite" (refer tosect. 21).6. Insert busbar sections, "center"between the bushings and screwdown.

Transition resistancemeasurement of busbarscrew fastening

Refer to the instructions of thetransistance resistance meter'smanufacturer (refer to sect. 21).1.Measure transition resistance Rbetween the individual busbarsections with 100 A DC.

2. The measured resistance valuesshould be comparable. If one valueexceeds the average of the othermeasured values by max. 20 % ormore, undo busbar screw fastening;clean contact surfaces carefully andrepeat the mounting procedure.

15

Approximate values

Busbar rated Resistance R(service) current [µΩ][A]

1250 25

1250/1600 17

2000/2500 9

16

1. The gas compartments of circuit-breakers and busbars are separated.The cladded compartments of theindividual panels are interconnectedby piping and, if necessary, can bedisconnected from the gas compart-ment of the switchgear in question.Non-cladded gas compartments, e.g.busbar gas compartment of theWSA type and circuit-breaker gascompartment of the WSA withoutcladding, form a common gas com-partment.2. At the left end panel, or - in case of switchgear equipped with buscoupler - on the left and right endpanel, pressure transmitters areinstalled which transmit the measu-red values to IGIS via signal lines.3. A gas compartment diagram isavailable in the switchgear's "info"tray.

Drucktransmitter P2

P1

P2 = LeistungsschaltergasraumP1 = Sammelschienengasraum

29Gas compartments of WSA. Busbar compartments not cladded

Drucktransmitter P3

P2

P1

P3 = LeistungsschaltergasraumP1 = Sammelschiene 1-GasraumP2 = Sammelschiene 2-Gasraum

30Gas compartments in case of WSB. The gas compartments of the switchgear panels are con-nected by piping and can be disconnected from the switchgear's gas compartments, if necessary.

P2 = Circuit-breaker gas compartmentP1 = Busbar gas compartment

Pressure transmitter

P2

P1

P3 = Circuit-breaker gas compartmentP1 = Busbar 1 - gas compartmentP2 = Busbar 2 - gas compartment

Pressure transmitter P3

P2

P1

10 Gas compartment and gas line concept>>

17

Connecting busbar gas lines

(only in case of busbarcompartment cladding)

Refer to gas compartment diagram.

1. Remove yellow protective caps.Screw-fasten "bus lines" of the in-dividual busbar gas compartmentsto one another taking account of thegas compartment diagram. Minimumtightening torque for gas line screwcoupling: 20 Nm.2. To prepare for evacuation of thebusbar gas compartments, discon-nect all gas lines connectingthe switchgear's busbar chambers tothe "bus line".

Connecting circuit-breaker gas lines

1. Remove yellow protective caps.Screw-fasten "bus lines" of theindividual circuit-breaker gas com-partments to one another takingaccount of the gas compartment dia-gram. Connect circuit-breaker gaslines of the individual circuit-breakerchambers with the "bus line". Mini-mum tightening torque for gas linescrew coupling: 20 Nm.

31Gas line, panel WSA with busbar compartment cladding

33Gas line, panel WSB

32Gas line, panel WSA without busbar compartment cladding

Busbar 1

Busbar 2

Circuit-breaker

Circuit-breaker

Busbar

Circuit-breaker

>> 11 Gas compartment connections

18

1. IGIS and hardware are included inseparate packaging in the switch-gear accessories.2. Open flap for IGIS (magnetic plate).3. Insert IGIS and attach the clips onthe left and right rear sides; tightenby means of a screw driver.4. Wiring to Phoenix plug-and-socketconnections according to theswitchgear's circuit diagrams.5. Connectors of the signal cables tothe pressure measuring points inquestion on the IGIS (P1 - P3).6. Close non-used inputs using acover.

Seitenwand

Signalleitungen zu denDrucktransmittern

Befestigungsklammernlinks und rechts

34Installation and connection of the IGIS

Side panel

Signal lines to the pressure transmitter

Securing clampsleft-hand and right-hand

12 Installation of IGIS>>

19

13 Pressure transmitter>>1. The pressure transmitters are in-cluded in separate packaging inthe switchgear accessories.2. Remove the caps from the fillingand extraction valves taking accountof the gas compartment diagram,and fasten the pre-assembledpressure transmitters. Coat sealingrings with SF6 multi-purpose lubri-cant MS (refer to sect. 21).3. Lay signal line in cable duct of theside panel.4. Non-used cable lengths must bewound up and fastened to the sidepanel using cable clips.5. Connect signal lines to IGIS.

Pressure transmitter for circuit-breaker gas compartment Pressure transmitter for busbar gas compartment

36Mounting of pressure transmitter,Example: WSA with busbar compartment cladding

35Pressure transmitter

20

14 Activating the desiccant (molecular sieve), screw-fastening the mounting cover

>>Activate desiccant

Clean busbar gas compartmentsincluding mounting parts, removingloose particles such as abrasion,paint, dust or precipitated moistureby means of a dry, non-fibrouscloth.

1. The desiccant bag is located belowthe mounting orifice underneath acover.2. Tear open polybag by piercing several holes in the cover using achisel or a similar tool.

Screw-fasten mountingcover

The welding bolts on thebusbar chamber must not get intocontact with SF6 multi-purposelubricant MS.

1. Coat the sealing surfaces on thebusbar chamber, the mountingcover and the toroidal sealing ringwith SF6 multi-purpose lubricant MS(refer to sect. 21). Insert toroidalsealing ring.2. Screw-fasten mounting cover. Thefollowing tightening torques applyto screw couplings M8:- Steel cover, hex. nut with ratchet

14 +2/-1 Nm.- Aluminium cooler cover, hex. nut

without ratchet 8 +2/-1 Nm.

Trockenmittelbeutel

Abdeckung

37Activating the desiccant

SF6-Mehrzweck-Schmierstoff MS

38Screw-fastening the mounting cover

Desiccant bag

Cover

not lubricated mounting cover

Q SF6-Multi-purpose lubricant MS

21

15 Evacuation of the busbar gas compartments, filling gas compartments to rated filling pressure

>>Evacuation of the busbargas compartments

Refer to gas compartment diagram.Normally, the filling and extractionvalves for the busbar gas compart-ments and the circuitbreaker gascompartments are located on thelast but one panel.

The switchgear must not yet be energized!

1. Remove cap from extraction valve.Connect service instrument (refer tosect. 21). Pre-evacuate to 15 mbar.Subsequently, evacuate the busbargas compartments of the entireswitchgear to ≤ 1 mbar.

Filling the busbar gascompartments to therated filling pressure

Rated filling pressure, refer toname plate:pr 0.30 bar, pr 0.50 bar orpr 0.75 bar1. Switch service instrument over to"filling" mode. Connect gas fillingdevice (refer to sect. 21).2. Insert insulating gas until the ratedfilling pressure is reached. Watchrated filling pressure on secondarypressure gauge – range 0 to 1.6 bar– of the gas refilling device.3. Disconnect gas refilling device.

Filling the circuit-breakergas compartments to therated filling pressure

Rated filling pressure, refer to name plate.1. Remove cap from filling valve.Connect service instrument("filling"mode).2. Insert insulating gas until the ratedfilling pressure is reached. Watchrated filling pressure on secondarypressure gauge – range 0 to 1.6 bar– of the gas refilling device.3.Disconnect gas refilling device.Screw-fasten cap on filling valve.

After approx. 24 hours:Leakage test by means of leakage detector

A test for leakage is required when-ever gas-tight flange couplingshave been made.1. Use a leakage detector (refer tosect. 21). Observe the instructionsof the leakage detector's manufac-turer.2. Check the flange couplings mountedduring installation by holding the lea-kage detector close to them. Theflange coupling's tightness is en-sured if the leakage detector doesnot react.

Dew point measurementof the insulating gas

1. Use a dew point measuring device(refer to sect. 21). Observe theinstructions of the manufacturer ofthe dew point measuring device.2. Connect dew point measuringdevice to a filling valve. The mea-suring procedure is described inthe operating instructions for thedew point measuring device. Thedew point temperature must not behigher than –10 °C.3. Disconnect dew point measuringdevice. Screw-fasten cap on fillingvalve.

!

Leistungsschalter- Füll- undgasraum Absaugventil

Abdeck- kappe

39Filling and extraction valve for the circuit-breaker compartment

Sammelschienengasraum Füll- und Absaugventil

Abdeck-kappe

Schaltfeld- rückwand

40Filling and extraction valve for busbar gascompartment

Circuit-breakergas compartment

Filling andextraction valve

Filling andextraction valve

Busbar gascompartment

Rear wall ofswitchgear panel

Abdeck-kappe

Cap

16 Gas pressure monitoring via pressure gauge>>

22

- As an alternative to the IGIS gascompartment monitoring system,there are switchgear models withambient-temperature compensatedpressure gauges.

- Each circuit-breaker compartmentand the combined busbar gascompartments are connected to apressure gauge each.

1.After activating the desiccant, con-nect the mounting cover (refer tosect. 14, screw-fastening the moun-ting cover), remove the cap from theextraction valve (Fig. 41 ). Con-nect service instrument.2. Pre-evacuate the busbar gas com-partment in question without delay to15 mbar. Subsequently, evacuatethe busbar gas compartments of theentire switchgear to ≤ 1 mbar.

Filling the busbar gascompartments to therated filling pressure

Rated filling pressure, refer to name plate:pr 0.30 bar, pr 0.50 bar orpr 0.75 bar1. Switch service instrument over to"filling" mode. Connect gas refillingdevice.2. Insert insulating gas until the ratedfilling pressure is reached. Watchrated filling pressure on the pressuregauge.3. Disconnect gas refilling device.Screw-fasten cap on filling valve.

Filling the circuit-breakergas compartments torated filling pressure

Rated filling pressure, refer to rate plate.1. Remove cover from filling valve(Fig. 41), connect serviceinstrument ("filling mode").

41Pressure monitoring

42Pressure monitoring

Pressure gauge (pressure measuring device) for circuit-breaker gas compartment

Filling and extraction valve with cap (circuit-breaker gas compartment)

Pressure gauge for busbar section, right-hand

Filling and extraction valve with cap (busbar section, right-hand)

front shutter

rear side wall right

2. Insert insulating gas until the ratedfilling pressure is reached. 3.Disconnect gas refilling device.Screw-fasten cap to filling valve.

Gas line, circuit-breaker gas compartment

Gas line, busbar gas compartment

Feeder, low-voltage cubicle

Pressure indication onpressure gauge

The pressure indication on thepressure gauge is ambienttempera-ture compensated, i.e. the pressureindicated corresponds to a tempera-ture of 20 °C in the switchgearroom.

The pressure indication remainsconstant if the operating moderemains unchanged, even if thetemperature in the switchgear roomchanges.

Comply with sections 7.2 and 7.3 in the operating instructionsof the pressure gauge.

Magnetic snap contactson the pressure gauge

23

43Pressure monitoring

Pressure gauge (pressure measuring device) for circuit-breaker gas compartment

Filling and extraction valve with cap (circuit-breaker gas compartment)

Pressure gauge for busbar section, right-hand

Filling and extraction valve with cap (busbar section, right-hand)

44Pressure monitoring

Gas line, circuit-breaker gas compartment

Gas line, busbar gas compartment

front shutter

Signalling Switching functionscontact

1 closes if pre-alarm is reached during pressure drop

2 closes if main alarm is reached during pressure drop

3 closes if main alarm is reached during pressure increase

1. Sections of the earth conductor,plates and hardware included inswitchgear accessories.2. Coat contact surfaces on earthconnector (underside of busbarchamber), plate and section ofearth conductor with contactlubricant KL (refer to sect. 21).3. Screw-down plate. Tighten screwcouplings M8 with a torque of20 ± 2 Nm.4. Screw-down section of earth con-ductor. Tighten screw couplingsM10 with a torque of 40 ± 4 Nm.5. Connect earth conductor of switch-gear to earth conductor of theswitchgear building (this connectingline is not included in the scope ofsupplies).

External control lines

Cable clips, screws, springwashers etc. are not included in thescope of supplies.

1. Remove transport securing device(screw coupling M6) from the swingframe.2. Fold swing frame out. Introduceexternal control lines to the cableirons through the opening in thebase plate. Fix external control linesto cable iron using cable clips.3. Connect wires to terminals accor-ding to diagram.

24

45Mounting the earthing bus to the busbar chamber busbar 1

46/47Connecting external control lines

Fold out swing frame

17 Screwing down the earth conductor, connecting external control lines

>>

25

Screw-fastening the cable iron

1. Cable irons, angular brackets andhardware are included in switchgearaccessories.2. Insert cable irons and angularbrackets in panel supportingstructure, and screw them down.

Connector bushings

The panels feature outer cone-typeor inner cone-type connectionbushings as standard equipment.- Outer cone-type connection

bushing according to DIN EN 50181, connector type C (IR: 630 A; screwed contact with internal thread M16)

- Inner cone-type connectionbushing according toDIN EN 50181, connector type 1(IR: 400 – 630 A; plug-in contact 14 0/-0.04 mm).

Cable connectors, tools,accessories (cable clips,

screws, spring washers etc.)are not included in the scopeof supplies.

Mount cable connectors accor-ding to the mounting instruc-tions of the cable connector'smanufacturer. While mountingthe cable connectors, observethe specified tighteningtorques.

When shrink-fitting cableboxes, make sure that

the cable connection area ofthe panel is not heated beyondthe admissible service tempe-rature.

We cannot accept any liabilityfor consequential damage(charred cables of the capaci-tive indicator) which might re-sult from shrinkfitting compo-nents in the cable connectioncompartment using an openflame.

Cable connectors forinner cone-type connec-tion bushings

1. Remove transport protective capsfrom the connector bushings(socket-contacts).2. Mount cable connector according to the instructions of the cableconnector manufacturer. Insertcable connector in inner cone-typeconnection bushing (press down)and screw-fasten safely. Tightenscrew couplings M8 with a torqueof 15 ± 3 Nm.

After the cable connector has been inserted and screwed

down, no cantilever loads andtorsional forces must act on theinner conetype connection bushing(risk of damage to the inner cone-type connection bushing).

3. If necessary, re-adjust cable iron,align cables and fasten them to thecable iron using cable clips.

Connector shell with con-ductive contact surfacewith reference to switch-gear's metal enclosure:

If the metallic connector shellfeatures a conductive surface incontact with the metal cladding ofthe switchgear (this applies for thePfisterer brand, system CONNEX),the cable's Cu shield must not beconnected to the connector shell(contacting). If for operationalreasons it is not possible to providean insulation between the cable'sCu shield and the connector shell,consult the manufacturer.1. Coat contact surfaces of earthconnection (cable's Cu shield) withcontact lubricant KL (refer to sect. 21).2. Screw-down Cu shield of cable to cable iron.3. Close unused inner cone-typeconnection bushings with surge-proof dummy plugs.

!

!

48Example of cable connector for inner cone-type coupler, make Pfisterer, system CONNEX

Transportprotection cap

Cable clip Adjustable cable iron

Earth conductor

18 High-voltage connection>>

26

Cable connectors forouter cone-type connec-tion bushings

1. Mount cable connector according to the instructions of the cable con-nector manufacturer. Torque fortightening the cable connection (flattermination) to the outer cone-typeconnection bushing (thread M16):40 ± 5 Nm.

If the cable connector's manufacturer specifies a differenttightening torque, the latter must beused. Do not use tightening torquesexceeding 50 Nm.

2. Slip cable connector onto outercone-type connection bushing, andscrew it down. Tighten screwcouplings M8 with a torque of10 ± 2 Nm.

After the cable connector has been slipped on and screweddown, no cantilever loads and tor-sional forces must act on the outerconetype connection bushing (riskof damage to the outer cone-typeconnection bushing).

3.If necessary, re-adjust cable iron,align cables and fasten them to thecable iron using cable clips.4. Coat contact surfaces of earthconnection (cable connector shelland cable Cu shield) with contactlubricant KL (refer to sect. 21).5. Screw-down earth connection ofcable connector shell and Cu shieldof cable to cable iron.6. Close non-used outer cone-typeconnection bushings with surgeproofcaps.

Connector for beltedcable (only up to 24 kV)for outer cone-type con-nection bushing

1. Mount hose-type cable box andconnecting adapter according tomanufacturer's mounting instruc-tions.

49Example of cable connector for outer cone-type coupler, make KABELRHEYDT,type AGG 20/400 (plug-in contact)

50Belted cable for outer cone-type coupler,make F&G, type SKV 10D

Cable clip

Earthconductor

Adjustablecable iron

Connectingadapter

Connectingpin

Adjustablecable iron

27

Fully insulated conductorbar connection

To verify precise contacting ofthe fully insulated conductor bar,remove circuit-breaker module (referto operating instructions, sect. 6.1).

1. Fully insulated conductor bars, ringsand hardware included in switch-gear accessories.2. Remove cover (blanking cover).3. Mount fully insulated conductor baraccording to mounting instructionsof the manufacturer.4. Check precise contacting betweenround conductor and fully insulatedconductor bar.5. Insert desiccant.6. Screw-fasten circuit breaker moduleand fill it to rated filling pressure(refer to sect. 15).

Handling the Cu shieldson high-voltage cableswith ring core currenttransformers

1. Coat contact surfaces of earthconnection (Cu shield) with contactlubricant KL (refer to sect. 21).2. Route earth connection (Cu shield)of the conductor in question (L1, L2and L3) directly on the high-voltagecable to the cable current trans-former on the insulated earthreturn bar, and screw-fasten it.3. Route return line of earth connectionbus line (in terms of PE conductorSL, marked in yellow/green) fromthe opposite earth return bar of thecable current transformer to thecable iron over the shortest distance,and screw it down.Fasten Cu shield to the conductorusing an insulating tape or a cableclip.

51Example of fully insulated conductor bar connection, make Meßwandlerbau, system DURESCA

52Fundamental drawing, handling the Cu shieldson the high-voltage cables with ring core current transformers

M 8 x 4020 ± 2 Nm

Cable connector

Cu shield

Cable clip (insulating tape)

Earth return bar

Ring core CT

Earth shield bus cable

Cable iron

28

Current transformer inline with busbar (currentmeasurement on the bus-bar)

1. Trailing cables ready for installationincluded in switchgear accessories.2. Take account of obligatory assemblydrawing.3. Remove transport protective capsfrom the connection bushings(socket-contacts).4. Mount cable connector according tothe instructions of the cable connec-tor manufacturer. Insert cable-con-nector in inner cone-type connectionbushing (press down) and screw-fasten safely. Tighten screw coup-lings M8 with a torque of 15 ± 3 Nm.

After the cable connector has been inserted and screweddown, no cantilever loads or torsio-nal forces must act on the innerconetype connection bushing (riskof damage to the inner cone-typeconnection bushing).

5. If necessary, re-adjust cable iron,align cables and fasten them to thecable iron using cable clips.

Screw-fastening thedummy plug

Close unused outer or innercone-type connection bushings withsurge-proof dummy plugs (surge-proof dummy plugs are not includedin the scope of supplies). Surge-proof dummy plugs are availablefrom the manufacturer of the cableconnection system.

1. Remove transport protection cap(made of plastic). Screw-fasten thedummy plug.

53Example of dummy plug for inner conetypeconnection bushing

Dummy plug

Transportprotection cap

29

19 Screw-fasten the cover plates (rear side of panel)>>

1. Screw-fasten cover plates to therear of the panel supporting struc-ture (cover plate and hardware areincluded in the switchgear accesso-ries).

54Screw-fastening the cover plate

20 Final operations before commissioning>>

30

Check:- lrated supply voltage of the

control and operating devices.- rated filling pressure indication

on the IGIS

Clean and check assembly work

1. Clean the switchgear, removingcontamination due to assemblywork.2. Remove all the attached informationtags, cards, brochures and instruc-tions no longer needed.3. Have all parts removed during thework on site been re-mounted?

Verify that operability hasnot been impaired bytransport or assembly.

The high-voltage supplymust not be switched on!

1. Actuate switching devices (refer tooperating instructions, sect. 4).Watch position indicators.

Check control currentcircuits

1. Switch on auxiliary voltage andcheck for proper working order.- Electrical drives of switching

devices- Position indicators.2. Check wiring laid on site.

!

21 Appendix>>

31

Cleaning agent, contact lubricant,contact lubricant KL VV, SF6 multi-purpose lubricant MS Q and screwlocking compound "Loctite" O havebeen listed in the table "Auxiliarymaterial" on the following page.

How to treat contact sur-faces (sliding contact sur-faces, e.g. contacts ofearthing switches anddisconnectors, and firmlyscrewed contact surfa-ces, e.g. earth connec-tors).

Different lubricants must not be mixed on any account! Contact areas coated with contactlubricant KL should not be touched,if possible.

Once lubricants have been applied,these areas cannot be painted!

Contact areas must be subjected topreliminary treatment just beforescrew-fastening.

(1) Cleaning- using a lint-free cloth,- in case of severe contamination:

using a detergent.(2) Expose metallic surface.

Make sure no sanding dustgets into the SF6 gas compartments

- using emery cloth (grain size100 or finer), or

- using a steel brush which mayonly be used for copper.

(3) Expose metallic surface, removeany existing passivation- using emery cloth (grain size

100 or finer), or- using a steel brush which may

only be used for steel.(4) Coat with contact lubricant KL

Coat both contact surfaces so thatthe space between the contactsurfaces is filled after screwfaste-ning.

How to treat sealing surfaces and seals

Sealing surfaces coated with SF6 multi-purpose lubricant MSshould not be touched, if possible.Any contamination may impairfunction.

1. Sealing surfaces, seals (toroidalsealing rings) and grooves fortoroidal sealing rings must becleaned and degreased withparticular care using a cleaningagent and a lint-free cloth.2. Check visually.3. Immediately afterwards, grease withSF6 multi-purpose lubricant MSusing a nylon brush or a piece ofchamois exclusively used for theseapplications. Store in a place free ofcontamination.

Locking of screws using"LOCTITE"

1. Preparation of the threaded areas- Clean and degrease the threaded areas with a cleaning agent.2. Apply adhesive- Coat the entire circumference of

2 or 3 threads in the area to beglued with liquid screw lockingcompound.

- Max. time for positioning: 60 s.

Note:- In case of a thread reach over

1.2 x the screw diameter and ofblind hole threads, only wet thenut's thread.

Material of con- Pretreat-tact surfaces: ment

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

Copper or (1)copper alloy (2)

(4)

Steel or steel, (1)galvanized (3)

(4)

32

Auxiliary material Item no.

Cleaning agent;1 l can 008 152

Contact lubricant KL ; 0.5 kg can 008 157

SF6 Multi-purpose lubri- cant MS ; 0.75 kg can 008 134

Screw locking agent "Loctite" 008 329

Insulating gas sulphur hexafluoride (SF6) acc. to DIN VDE 0373 orIEC Publication 376Compressed-gas cylinder (rented bottle) of 40 kg 008 136Compressed-gas cylinder (rented bottle) of 10 kg 008 142

Recommendedsuppliers for SF6:Linde AGKali-Chemie Fluor GmbH

Repair paint100 g canRAL 7032 pebble grey 008 795RAL 7044 silk grey –

Repair paint500 g canRAL 7032 pebble grey 008 796RAL 7044 silk grey 009 492

These auxiliary materials areavailable fromAREVA Regensburg GmbH

The use of other auxiliarymaterials is not admissible.

Devices, appliances, Item no. accessories

Transport device 880 290

Transport trolley 880 086

Toroidal sealing ring,size 527 x 12 (flange 060 658coupling, panel screwcoupling)

Toroidal sealing ring,size 138 x 6 060 654size 10 x 3 060 652(busbar attachment,only in case of busbarcompartmentcladding)

Toroidal sealing ring,size 564 x 12 060 659(Attachment ofmounting cover tobusbar chamber)

Desiccant bag500 g C01 128300 g C51 082200 g C21 747

Spare part kit C24 674

Recommended equipment forSF6 handling (not included in scope of supplies)

SF6 gas refilling unit with secondarypressure gauge 0 to 1.6 bar,connection DN6,DILO ref. no. 3-001-R409(for a rated filling pressureof 0.30 and 0.50 bar)

SF6 gas refilling unit with secondarypressure gauge 0 to 1.6 bar,connection DN6,DILO ref. no. 3-001-R410(for a rated filling pressureof 0.75 bar)

SF6 gas refilling and evacuatingunit, with vacuum pump 10 m3/h,connection DN 6,DILO ref.no. 3-001-2-R403(for a rated filling pressureof 0.30 and 0.50 bar)

SF6 gas refilling and evacuatingunit, with vacuum pump 10 m3/h,connection DN 6,DILO ref.no. 3-001-2-R410(for a rated filling pressureof 0.75 bar)

Dew point measuring devicemake MWB, type DP3-D-IIISH

Gas leakage detector,make Wessels Meßtechnik,type HI300

Air content measuring unit,DILO ref. no. 3-027

Transition resistance measuringunit make Gloor Oerlikon,ref. no. 62775

33

Notes:

34

Notes:

AREVA Sachsenwerk GmbH · Rathenaustraße 2 · D-93055 Regensburg · Postfach 10 01 55 · D-93001 Regensburg

Telefon +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

AR

EV

AS

ac

hse

nw

erk

Gm

bH

Re

ge

nsb

urg

- ©

- A

RE

VA

- 2

00

4. A

RE

VA

, th

e A

RE

VA

log

o a

nd

any

altern

ative

vers

ion t

here

of

are

tra

dem

ark

s a

nd

serv

ice m

ark

s o

f A

RE

VA

The o

ther

nam

es m

entioned

, re

gis

tere

d o

r not, a

re t

he p

rop

ert

y of

their r

esp

ective

com

panie

s -

38

91919

82

RC

S P

AR

IS -

Cre

ation:

SC

HR

EM

L M

ed

ia G

mb

H R

eg

ensb

urg

- P

rinte

d in G

erm

any