areva energietechnik gmbh – sachsenwerk medium...

AIR-INSULATED SWITCHGEAR

PIX 12–17–24Earthing and testing truck with ball pins

AssemblyOperationMaintenanceNo. AGS 531 506-02

Edition 12/2008

Technical Manual

AREVA T&D

AREVA T&D Worldwide Contact Centre http://www.areva-td.com/contactcentre ( +44 (0) 1785 250 070 http://www.areva-td-com

Manufacturer:

AREVA Energietechnik GmbH – Sachsenwerk Medium Voltage Rathenaustrasse 2 D-93055 Regensburg, Germany ( +49 (0) 9 41 46 20-0 7 +49 (0) 9 41 46 20-418

Service:

Should you have any queries as to our service, please contact:

AREVA Energietechnik GmbH – Sachsenwerk Medium Voltage Service-Center D-93055 Regensburg, Germany

( +49 (0) 9 41 4620-777

7 +49 (0) 9 41 4620-778

© AREVA Energietechnik GmbH – Sachsenwerk Medium Voltage -2009- All rights reserved to this technical manual. Reproduction and making available of this technical manual, or extracts, to third parties are prohibited. Only integral reproduction of this technical manual is permitted with the written permission from AREVA Energietechnik GmbH –Sachsenwerk Medium Voltage.

Electronic copies in e.g. PDF-format or scanned version have the status “for information only” .

The only valid version of this technical manual is always enclosed directly to the product in question by the factory.

3PIX Earthing and testing truck l Assembly – Operation – Maintenance

Content

Remarks on this manual ............................................................. 5Purpose and target group ................................................................................................ 5Reference documents ....................................................................................................... 5Terms and symbols used .................................................................................................. 5Abbreviations used ............................................................................................................ 5Any questions or suggestions? ...................................................................................... 5

1 Safety provisions ................................................................... 6

2 Design and description ...................................................... 72.1 Variants .................................................................................................................... 72.2 Utilization in line with the intended purpose .................................................... 82.3 Applied standards ................................................................................................. 92.4 Environmental and operating conditions .......................................................... 92.5 Disposal after the end of the panel‘s service life ............................................ 9

3 Delivery, storage and transport .....................................103.1 Delivery...................................................................................................................103.2 Transport ................................................................................................................103.3 Storage ..................................................................................................................10

4 Converting the earthing and testing truck to the appropriate function .............................................11

4.1 Earthing and testing truck with finger-type contacts ..................................114.1.1 Truck for busbar .................................................................................................114.1.2 Truck for cable connection ..............................................................................114.1.3 Converting the truck from busbar to cable connection............................124.1.4 Converting the truck from cable to busbar connection............................124.2 Earthing and testing truck with tulip contacts ...............................................134.2.1 Truck for busbar .................................................................................................134.2.2 Truck for cable connection ..............................................................................134.2.3 Converting the truck from busbar to cable connection............................144.2.4 Converting the truck from cable to busbar connection............................144.3 Deactivating shutter synchronization in the PIX panel ................................15

5 Commissioning ....................................................................165.1 Final steps .............................................................................................................165.2 Racking the earthing and testing truck into the panel ................................175.3 Function testing ...................................................................................................17

6 Operation ................................................................................186.1 Interlocks ...............................................................................................................186.2 Operating specifications ....................................................................................186.3 Moving the truck into service/disconnected position..................................186.3.1 Racking-in the truck from isolating into service position .........................196.3.2 Racking-out the truck from service into disconnected position .............196.4 Use of the earthing and testing truck ..............................................................206.4.1 Tool for voltage-testing on the busbar .........................................................206.4.2 Tool for voltage testing on connected high-voltage cables ....................206.4.3 Using the earthing and testing truck for earthing ......................................21

Content

4 PIX Earthing and testing truck l Assembly – Operation – Maintenance

7 Maintenance .........................................................................227.1 Safety provisions..................................................................................................227.2 Servicing schedule ..............................................................................................227.3 Cleaning insulating components ......................................................................237.4 Corrosion protection ...........................................................................................237.5 Avoid condensation ............................................................................................237.6 Lubrication instructions ......................................................................................247.7 Final steps .............................................................................................................24

8 Annex .......................................................................................258.1 Accessories ..........................................................................................................258.2 Auxiliary products ................................................................................................258.3 Screw fastenings .................................................................................................258.4 Treatment of the sliding contact surfaces ......................................................26


Remarks on this manual

Purpose and target group

This Technical Manual describes transport, assembly, operation and mainte-nance of an earthing and testing truck for PIX panels. It is exclusively intended for use by the manufacturer's staff or by persons certified for the PIX series (training certificate).

This Technical Manual is an integral part of the product and must be stored in such a way that it is at all times readily accessible for and can be used by per-sons who are to work on the earthing and testing truck or on the switchgear in which it is installed. If the switchgear is relocated to another site or if the earth-ing and testing truck is resold, this Technical Manual must be passed on to the new operators along with the unit.

As our products are subject to continuous further development, we reserve the right to make changes regarding standards, illustrations and technical data. All dimensions specified in this manual are in millimeters.

Reference documents

The following additional documents must be complied with:

Purchase agreement containing the stipulations on the specific equipment ●of the earthing and testing truck and the legal details

For assembly and operation of the earthing and testing ● truck, the operat-ing manual of the switchgear in which it is operated must be complied with (PIX panel with vacuum switching devices): AMT NoT060-02).

Terms and symbols used

This manual uses certain terms and symbols. They warn about dangers or provide important information which must be complied with to avoid danger to persons and damage to equipment:

„Warning“ This danger symbol warns about dangerous electrical voltage. Con-tact with voltage may result in fatal injury!

„Warning“ This danger symbol warns about the risk of injury. Please comply with all the provisions identified by this symbol in order to avoid death or serious injury.

„Important“ This instruction symbol is used for information which is important to avoid material damage.

Abbreviations used

““Truck”: withdrawable part

Any questions or suggestions?

Do you have any questions or suggestions regarding this manual, or do you require further information?

We always strive to provide you with the best-possible information for optimum, safe use of our products. Thus, do not hesitate to contact us if you have any recommendations, amendments or proposals for improvement.


1 Safety provisions

The work described in this Technical Manual may only be performed by special-ist electricians who have proven experience in conjunction with the earthing and testing truck, the PIX switchgear and the applicable safety provisions.

Read this Technical Manual carefully before you work with the earthing and testing truck, and perform the work as described.

● The locally applicable accident prevention, operating and work instructions must be complied with.

Installation ● 1 IEC 61936-1 / HD 637 S1;

Operation of electrical equipment ● 1: EN 50110-11 The national standards applicable in the country where the equipment is to be installed must be complied with.

Before performing work on the earthing and testing truck/panel, it is es-sential that you comply with the following instructions:

Warning! Before starting work on the earthing and testing truck/panel, de-energize the system, verify it for zero voltage and earth the system according to the applicable safety rules pursuant to EN50110-1.

Warning! After removal of covers, operator safety in accordance with IEC 62271-200 may be restricted if the appropriate part of the switchgear unit has not been isolated from the power supply.

In case of fire or of internal faults, toxic and caustic decomposition products may be produced. Comply with the locally applicable accident and safety provi-sions.

In case of personal injury, take first-aid measures or cause them to be taken.

Applicable standards and regulations:

Behaviour in case of incidents or accidents


2 Design and description

Variants2.1

The variants of the earthing and testing truck are subdivided on the basis of the respective panel configuration according to the following criteria:

Rated voltage ●Rated current ●Phase spacing between the fixed contacts ●

The earthing and testing truck is supplied, depending on the fixed contacts installed in the panel, with the appropriate moving contacts.

1

2

3

4

5

6

Fig. 1Earthing and testing truck with finger-type contacts

Moving contacts1 Shutter lifter2 Handle3 Jack ring4 Post insulator5 Ball pin6

1

2

3

4

5

6

Fig. 2Earthing and testing truck with tulip contact

Moving contacts1 Shutter lifter2 Handle3 Jack ring4 Post insulator5 Ball pin6



3

5

4

1

2

Fig. 3Earthing and testing truck in the PIX panel

Moving contacts1 Ball pin2 Nameplate3 Handle4 Insertion opening for crank used for racking the 5 truck manually

Utilization in line with the intended purpose2.2

The earthing and testing truck is exclusively intended for use in panels of the PIX series. It may only be used in the scope of the specified standards and the switchgear-specific technical data. Any other utilization constitutes improper use and may result in dangers and damage.

The manufacturer shall not be held responsible for damage which occurs if

instructions in this Technical Manual are not complied with, ●the earthing and testing ● truck is not operated according to its intended use (see above);

the earthing and testing ● truck is assembled, connected or operated im-properly,

accessories or spare parts are used which have not been approved by the ●manufacturer,

the earthing and testing ● truck is converted without the manufacturer’s ap-proval, or if inadmissible parts are attached.

Disclaimer of liability

9


PIX Earthing and testing truck l Assembly – Operation – Maintenance

Applied standards2.3

The earthing and testing truck for PIX panels is dimensioned for indoor installa-tion.

Designation IEC Standard EN Standard

High-voltage switchgear and controlgear: Common specifications

IEC 62271-1

–

Installation IEC 61936-1 HD 637 S1

Operation of electrical equipment – EN 50110-1

Environmental and operating conditions2.4

The earthing and testing truck may only be operated under normal operating conditions acc. to IEC 62271-1.

Operation under conditions deviating from these is only admissible upon con-sultation and with the written approval of the manufacturer.

Ambient conditions (in accordance with IEC 62271-1)

Temperature class “minus 5 indoors”1

Min./max. ambient temperature ºC -5 / 401

Average value over 24 hours ºC ≤ 351

Average rel. air humidity: 24 hours / 1 month

% ≤ 95/≤ 901

Installation altitude above sea-level m ≤ 10001

1 higher values available on request

Disposal after the end of the panel2.5 ‘s service life

The disposal of the earthing and testing truck is described in the scope of the disposal of the switchgear panel pertaining to it.

Material and recycling data sheets can be provided on request for the disposal of series PIX panels at the end of their service life:

Disposal at the end of the service life is performed by the Service Center at the manufacturer‘s as a service which is subject to a fee.

The earthing and testing truck meets the following standards and regulations:


3 Delivery, storage and transport

Delivery3.1

Handle shipping units carefully when unloading and unpacking them. ●Shipping units must be checked upon receipt. Any damage which may ●have occurred in transit must be recorded and reported to the manufac-turer immediately.

Check completeness of consignment based on the transport documents. ●The supplier must be notified in writing without delay about any deviations. ●

Transport3.2

Transport using a forklift truck:

Only transport the earthing and testing truck within its shipping unit on a pallet.

Transport without pallet:

Lift the earthing and testing truck in acc. with Fig. 4. Ropes, chains and lifting device are not included in the scope of supplies.

Attach ropes and chains only to the jack rings provided to this effect on the earthing and testing truck (Fig. 4).

Warning! Comply with the appropriate safety provisions for lifting devices.

Fig. 4Transport

Storage3.3

The transport packaging is not intended for storage. The risk of storing the parts in packed condition shall be the consignee‘s responsibility!


4 Converting the earthing and testing truck to the appropriate function

The earthing and testing truck can be used as a tool for the following voltage tests:

Voltage tests on the busbar (see page ● 20)

Voltage tests on the high-voltage cables connected (see page ● 20)

The truck is delivered with busbar or cable compartment connection, depend-ing on customer’s requirements.

Prior to the intended use, the truck must be set and tested appropriately.

Earthing and testing 4.1 truck with finger-type contacts

Truck4.1.1 for busbar

In service position, the testing withdrawable part only establishes electrical contact with the upper fixed contacts of the panel.

Thus, the shutter actuation of the truck may only be mounted on its right-hand side to make sure that only the upper shutter is actuated.

Any shutter synchronization installed in part of the panels must be deacti-vated (see page 15).

Warning! High voltage! The lower shutter must remain closed in any case.

Truck4.1.2 for cable connection

In service position, the testing withdrawable part only establishes electrical contact with the lower fixed contacts of the panel.

Thus, the shutter actuation of the truck may only be mounted on its left-hand side to make sure that only the lower shutter is actuated.

Any shutter synchronization installed in part of the panels must be inter-rupted (see page 15).

Warning! High voltage! The upper shutter must remain closed in any case.

Fig. 5Earthing and testing truck for busbar

Fig. 6Earthing and testing truck for cable con-nection



Converting the 4.1.3 truck from busbar to cable connection

Release the connecting bolts of the conductor bars1. (Fig. 7, 1).

Turn over the conductor bars (2), check the phase spacing 2. (Fig. 8) and refasten the conductor bars by means of the connecting bolts.

3. Change ball pin over from its lower to its top position and screw-fasten it (Fig. 9, 3).

Change the shutter actuation from the right-hand to the left-hand side (4)3. .

Warning! High voltage! No shutter actuation must be mounted to the right-hand side.

1

2

Fig. 7Connecting bolts of the conductor 1 barsTurn over the conductor bars2

E ± 1

E ± 1

Fig. 8Check the phase spacingPhase spacing E: 185 mm or 210 mm

3

4

Fig. 93 Ball pin4 Shutter actuation

Converting the 4.1.4 truck from cable to busbar connection


Turn over the conductor bars (2), check the phase spacing2. (Fig. 11) and refasten the conductor bars by means of the connecting bolts.

Change ball pin over from its lower to its top position and screw-fasten it3. (Fig. 12, 3).

Change the shutter actuation from the left-hand to the right-hand side (4)4. .

Warning! High voltage! No shutter actuation must be mounted to the left-hand side.

1

2

Fig. 10Convert the moving contacts

Connecting bolts of the conductor 1 barsTurn over the conductor bars2

E ± 1

E ± 1

Fig. 11Check the phase spacingPhase spacing E: 185 mm or 210 mm

3

4


13



Earthing and testing 4.2 truck with tulip contacts

Truck4.2.1 for busbar

In service position, the testing withdrawable part only establishes contact with the upper fixed contacts of the panel.

Thus, the shutter actuation of the truck may only be mounted on its left-hand side to make sure that only the upper shutter is actuated.

Any shutter synchronization installed in part of the panels must be deacti-vated (see page 15).

Warning! High voltage! The lower shutter must remain closed in any case.

Truck4.2.2 for cable connection

In service position, the testing withdrawable part only establishes contact with the lower fixed contacts of the panel.

Thus, the shutter actuation of the truck may only be mounted on its right-hand side to make sure that only the lower shutter is actuated.

Any shutter synchronization installed in part of the panels must be inter-rupted (see page 15).

Warning! High voltage! The upper shutter must remain closed in any case.

Fig. 13Earthing and testing truck for busbar

Fig. 14Earthing and testing truck with cable compartment connection



Converting the 4.2.3 truck from busbar to cable connection



Change ball pin over from its lower to its top position and screw-fasten it3. (Fig. 17, 3).

Change the shutter actuation from the left-hand to the right-hand side (4)4. .

Warning! High voltage! No shutter actuation must be mounted to the left-hand side.

1

2



254 ± 1254 ± 1

Fig. 16Check the phase spacing

3

4

Fig. 17Ball pin3 Shutter actuation4

Converting the 4.2.4 truck from cable to busbar connection



Change ball pin over from its lower to its top position and screw-fasten it 3. (Fig. 20, 3).

Change the shutter actuation from the right-hand to the left-hand side (4)4. .

Warning! High voltage! No shutter actuation must be mounted to the right-hand side.

1

2



254 ± 1254 ± 1

Fig. 19Check the phase spacing

3

4


15



4.3 Deactivating shutter synchronization in the PIX panel

PIX panels are partially equipped with a synchronization mechanism ensuring that both shutters are always actuated simultaneously. This applies to panels with a panel width of 1000 mm exclusively.

Warning! High voltage! When the earthing and testing truck is used, this synchronization must be deactivated, in order to open the shutters selectively.

The shutter synchronization must only be interrupted on the right-hand side of the shutter actuation.

Release retaining clip (1).1.

Remove the rod (2) from the pin and deposit it behind the pin (3).2.

Remount the retaining clip (4).3.

1

2

Fig. 21Release retaining clip1 Remove the rod from the pin2

34

Fig. 22Rod located behind the pin3 Remount the retaining clip.4

After using the earthing and testing truck and before inserting a different truck, re-activate the shutter synchronization.


5 Commissioning

5.1 Final steps

Warning!The high-voltage supply must not be connected. All active parts must be earthed.

Important:Whenever you detect anomalies, faults or malfunctions, do not commission the earthing and testing truck, but inform the manufacturer.

● Clean the earthing and testing truck, removing contamination resulting from assembly work.

Remove all the attached information tags, cards, brochures and instruc- ●tions no longer needed.

Check the tightening torques of all bolt fastenings and connections estab- ●lished on the site of installation.

Minor damage to the paint can be repaired using commercially available paint.

● Check the earthing and testing truck for damage which might be due to transport or assembly work.

Compare data on nameplate with the required ratings. ●

Cleaning and checking assembly

Damaged paint

Inspection

17

5 Commissioning


Racking the earthing and testing 5.2 truck into the panel

A transport trolley must be used to rack the earthing and testing truck (Fig. 23) into the panel. The trolley is not an integral part of the standard accessories.

For the design and method of operation of the transport trolley used, please refer to the instructions for the PIX panel in question.

Racking the earthing and testing truck into and out of the panel on the trolley is also described in the instructions for the PIX panel in question.

Fig. 23Earthing and testing truck on a transport trolley in front of the open panel front door

Function testing5.3

Move 1. truck into its service and disconnected positions via the crank (see Chapter 6.3 ).

Check mechanical interlocks between the 2. truck and the panel. Check position indication.


6 Operation

Interlocks6.1

For the earthing and testing truck, the panel-specific models of the truck inter-lock apply. They are recorded in the panel instruction manuals and specified in the contract details.

Operating specifications6.2

The switchgear unit may only be operated by specialist electricians who have proven experience (training certificate) in conjunction with the PIX 12-17-24 kV series and all the relevant safety standards.

Refer also to the safety provisions in Chapter 1.

Warning! To rule out faulty switching operations, the operating sequences described below must be complied with. Each switching operation must be completed.

Check whether the supply voltage is ON.

Important:After each switching operation for which you have used a crank or a lever, remove this tool and store it in the tool board.

6.3 Moving the truck into service/disconnected position

Warning!Trucks may on principle only be moved into service or disconnected position when de-energized. Isolate the busbar / outgoing feeder cable from the power supply and earth it.

Important:Do not pull the crank out before the truck in question has reached its end posi-tion; do not pull it out in an undefined intermediate position.

Initial situation:

Earthing switch OFF ●Busbar / cable connection compartment de-energized and earthed ●

The following figures show the earthing and testing truck for the busbar. Op-eration of the truck variant for cable connection is identical.

19

6 Operation


6.3.1 Racking-in the truck from isolating into service position

Open cover 1. (Fig. 24, 1) and insert crank (2).

Turn crank clockwise (3) until the 2. truck has been racked in. Remove crank.

Check position of the 3. truck (Fig. 25) through the inspection glass.

L3L1

L2

3 21

Fig. 24Open cover1 Insert crank2 Turn crank clockwise3

Fig. 25Truck in service position

Racking-out the 6.3.2 truck from service into disconnected position

Open cover 1. (Fig. 26, 1) and insert crank (2).

Turn crank counter-clockwise (3) until the 2. truck has been racked out. Remove crank.

Check position of the 3. truck (Fig. 27) through the inspection glass.

3

L3L1

L2

2

1

Fig. 26Open cover1 Insert crank2 Turn crank counter-clockwise3

Fig. 27Truck in disconnected position


6 Operation

Use of the earthing and testing 6.4 truck

Warning! Comply with the safety provisions (page 6) when using the earthing and testing truck.

6.4.1 Tool for voltage-testing on the busbar

1. Adjust the earthing and testing truck acc. to Chapter 4. Comply precisely with the correct settings to make sure only the upper shutter opens when moving into service position.

Move the 2. truck into service position (see page 19, Chapter 6.3.1).

Connect test adapter and test 3. unit to one phase via the ball pin (1). Earth adjacent phases via the other ball pins.

Conduct voltage test. Comply 4. with the safety provisions and operating specifications for test unit and switchgear.

6.4.2 Tool for voltage testing on connected high-voltage cables

1. Adjust the earthing and testing truck acc. to Chapter 4. Comply precisely with the correct settings to make sure only the lower shutter opens when moving into service position.


Connect test adapter and test 3. unit to one phase via the ball pin (1). Earth adjacent phases via the other ball pins.

Conduct voltage test. Comply 4. with the safety provisions and operating specifications for test unit and switchgear.

1

Fig. 28Earthing and testing truck with busbar connection

Ball pin1

1

Fig. 29Earthing and testing truck for cable con-nection

Ball pin1

21

6 Operation


Using the earthing and testing 6.4.3 truck for earthing

Fig. 30Busbar connection

Fig. 31Cable compartment connection

Adjust the earthing and testing 1. truck to the required busbar or cable com-partment connection (Chapter 4).


Open the front door and test all ball pins for zero voltage using an appro-3. priate voltage testing system.

Connect the earthing device in all three phases to the ball pins and to the 4. panel earthing (Fig. 32).

1

2

Fig. 32Earthing of the busbar using the earthing and testing truck

Ball pin on the earthing and testing 1 truckPanel earthing2


Maintenance7

Safety provisions7.1

Only specialist electricians certified by the manufacturer for maintenance work regarding earthing and testing trucks for PIX panels and who have the required knowledge regarding operation of medium-voltage switchgear are permitted to perform maintenance and cleaning work.

Warning!Comply with the safety provisions on page 6 and in the PIX Techni-cal Manual.

Warning!Risk of injuries. The earthing and testing truck must not be disas-sembled for maintenance work.

Servicing schedule7.2

The earthing and testing truck must be checked at regular intervals. The in-tervals depend on the strain to which the earthing and testing truck is subject during operation, and on the operating conditions.

In case of frequent condensation or air pollution (dust, smoke or corrosive gases), the maintenance intervals must be adapted to the actual conditions.

Important:The operating company is responsible for complying with the specified mainte-nance intervals and for performing maintenance according to the actual operat-ing and ambient conditions.

In case of queries or ambiguities, please contact the manufacturer.

Maintenance intervals (ambi-ent conditions according to IEC 60 694)

Maintenance work Qualification / Work performed by

at least every 4 years Check for contamination / condensation and damage –

Clean the earthing and testing – truck as required Staff certified accord-ingly for the work to be doneafter 20 years Clean and grease the earthing and testing truck (see Chap-

ter 7.3 and 7.6)

23

7 Maintenance


Cleaning insulating components7.3

To ensure the specified insulating level, the insulating components must be clean.

On principle, general cleanliness of the earthing and testing truck and of its insulating parts should be ensured.

Clean using a dry, lint-free cloth. Depending on the degree of soiling, replace cloth as often as necessary.

Clean using cleaning agent (see page 25). The use of other cleaning agents is not admissible.

Wear protective gloves ●Use cleaning agents according to manufacturer ● ‘s instructions

Soak the cloth thoroughly and wipe the insulating components. Keep dura- ●tion of exposure as short as possible.

Expose the cleaned surface to the air for at least two hours. ●

Corrosion protection7.4

Drive mechanisms and covers have a long-term protection against corrosion. Any damage to the paint, scratches and other damage must be repaired imme-diately to avoid corrosion. Contact the manufacturer’s Service Center.

Avoid condensation7.5

To ensure the specified insulating level, the earthing and testing truck – es-pecially its insulating components – must not be exposed to condensation. If condensation should be detected on the earthing and testing truck: Clean the truck (see Chapter 7.3 ).

Slight contamination:

Serious contamination:


7 Maintenance

7.6 Lubrication instructions

Spindle of ● truck mechanism (Fig. 33, item 1). The spindle is accessible from below.

1

Fig. 33Rack-in mechanism

□ High-pressure grease1 Spindle

Moving contacts (Fig. 34). ●

Fig. 34Moving contactsr Contact lubricant Kontasynth

Final steps7.7

See section “Commissioning”, page 16.


8 Annex

Accessories8.1

Fig. 35Moving crank handle with integrated slip couplingSquare insertion port: Ref. no. AGS H32 532-01Hexagonal insertion port: Ref. no. AGS H31 601-01

8.2 Auxiliary products

Only the following auxiliary products, which can be obtained from the manu-facturer, may be used for mounting or maintenance. The use of other auxiliary products is not admissible.

Warning!Risk of injury if the auxiliary products are handled improperly. Com-ply with the safety data sheets of the auxiliary products.

Designation Symbol Ref. no.

Cleaning agent, 1-l can S 008152

Contact lubricant Kontasynth, 0.5 kg can r S 008167

High-pressure grease c ST 312-101-001

Screw fastenings8.3

The following elements must be used for all metal screw fastenings:

Screws and bolts: Grade ● ≥ 8.8

Nuts: Grade 8 ●

Thread size

Tightening torque [Nm]

min. max.

M6 7 9

M8 16 24

M10 36 44

M12 63 77

Table 1:Hex. bolts and socket-head capscrews (except slotted screws) and nuts

Thread size

Tightening torque [Nm]

min. max.

M8 12 18

M10 24 38

M12 36 54

M16 94 108

Table 2:Screw fastening with casting nuts in cast resin parts (transformer and post insulator)


8 Annex

Treatment of the sliding contact surfaces8.4

Important:Caution when handling bars insulated by heat-shrinkable sleeves: The ●heat-shrinkable sleeve must not get into contact with lubricant (swelling).

Contact areas coated with lubricant Kontasynth should not be touched, if ●possible.

Clean silver-plated contact surfaces by means of lint-free cloth; use clean-1. ing agent in case of serious contamination.

Immediately after the pre-treatment, coat the contact surfaces with a thin 2. film of lubricant Kontasynth.

AREVA T&D Worldwide Contact Centrehttp://www.areva-td.com/contactcentre/( +44 (0) 1785 250 070

www.areva-td.com

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