Schneider Electric VAH_AGS531271-01_05-13_EN_web User guide

Brand: Schneider Electric

Model: VAH_AGS531271-01_05-13_EN_web

Type: User guide

Medium Voltage Switching Devices

No. AGS 531 271-01

Edition 05/2013

www.schneider-electric.com

VAH

Heavy-duty vacuum circuit-breaker 12 kV to 17.5 kV

Assembly

Operation

Maintenance

Manufacturer:

Schneider Electric Sachsenwerk GmbH

Rathenaustrasse 2

D-93055 Regensburg

Germany

( +49 (0) 9 41 46 20-0

7 +49 (0) 9 41 46 20-418

Service:

Schneider Electric Sachsenwerk GmbH

Rathenaustrasse 2

D-93055 Regensburg

Germany

( +49 (0) 9 41 46 20-0

7 +49 (0) 9 41 46 20-418

VAH

3AGS 531 271-01 | Edition 05/2013

Contents

Remarks on this manual .............................................................................4

Purpose and target group ........................................................................................... 4

Reference documents ................................................................................................ 4

Terms and symbols used ............................................................................................ 4

Abbreviations used ..................................................................................................... 4

Any questions or suggestions?................................................................................... 4

1 Safety Provisions ..............................................................................5

2 Technical details ................................................................................6

2.1 Dimensions ..................................................................................................... 6

2.2 Applied standards ........................................................................................... 6

2.3 Environmental and operating conditions ......................................................... 6

2.4 Nameplate ....................................................................................................... 7

2.5 Control and actuation units ............................................................................. 8

2.6 Intended use ................................................................................................. 10

2.7 Disposal after the end of service life ............................................................. 10

3 Overview of variants VAH ............................................................... 11

4 Delivery, Storage and Transport .................................................... 13

4.1 Delivery ......................................................................................................... 13

4.2 Storage .......................................................................................................... 13

4.3 Transport of the circuit-breaker ..................................................................... 13

5 Assembly ......................................................................................... 14

5.1 Before installation .......................................................................................... 14

5.2 Fixing the circuit-breaker in place ................................................................. 14

5.3 Fitting the partitions ....................................................................................... 16

5.4 Interlocking further units ................................................................................ 16

5.5 Connecting the busbars ................................................................................ 17

5.6 Earth connection ........................................................................................... 18

5.7 Connecting the control cables ....................................................................... 19

6 Commissioning ............................................................................... 20

6.1 Final steps ..................................................................................................... 20

6.2 Checking switching functions and interlocks ................................................. 20

7 Operation ......................................................................................... 21

7.1 Operator interface and operating elements ................................................... 21

7.2 Charging the energy storing device .............................................................. 22

7.3 Switching operations ..................................................................................... 22

7.4 Fan attachment ............................................................................................ 23

8 Maintenance.....................................................................................24

8.1 Safety provisions ........................................................................................... 24

8.2 Maintenance schedule .................................................................................. 25

8.3 Cleaning insulating components ................................................................... 26

8.4 Corrosion protection ...................................................................................... 27

8.5 Condensation ................................................................................................ 27

8.6 Replacement of components ........................................................................ 27

8.7 Greasing the circuit-breaker pole and drive mechanisms ............................. 27

8.8 Maximum admissible numbers of breaking operations of vacuum

chamber ........................................................................................................ 31

9 Annex ............................................................................................... 33

9.1 Accessories ................................................................................................... 33

9.2 Auxiliary products .......................................................................................... 33

9.3 Treatment of rmly screw-connected contact surfaces ................................. 33

9.4 Specications for screw connections ............................................................ 34

VAH

4 AGS 531 271-01 | Edition 05/2013

As our products are subject to continuous further development, we reserve the right

to make changes regarding standards, illustrations and technical data.

All dimensions specied in this manual are in millimeters.

Purpose and target group

This Technical Manual describes transport, assembly, operation and maintenance

of the series VAH vacuum circuit-breakers. It is exclusively intended for specialist

electricians who have been certied for the VAH series (training certicate).

This Technical Manual is an integral part of the product and must be kept accessible

at all times to persons performing assembly, operation of or maintenance on the

circuit-breaker. If the circuit-breaker is sold to new owners, they must receive this

document along with the switching device.

This Technical Manual cannot describe every imaginable individual case or every

customer-specic version of the product. For information which is not included in this

manual, please contact the manufacturer.

Reference documents

■ Purchase agreement with the stipulations regarding the switch-specic equip-

ment and the legal details

■ Switch-specic circuit diagrams and documentation

■ Project notes regarding the VAH circuit breaker

■ For assembly and operation of the circuit-breaker, the operating manual of the

switchgear in which it is operated must be complied with.

Terms and symbols used

This manual uses certain terms and symbols. They warn about dangers or provide

important information which must be complied with at all costs so as to avoid danger

and damage:

"Danger!"

This danger symbol warns about dangerous electrical voltage.

Contact with voltage may result in fatal injury!

"Warning!"

This danger symbol warns about the risk of injury. Please comply

with all the provisions identied 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

Ur: Rated voltage

Ir: Rated current

Isc: Rated short-circuit breaking current

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 recommen-

dations, amendments or proposals for improvement.

The following additional

documents must be complied

with:

Remarks on this manual

VAH

5AGS 531 271-01 | Edition 05/2013

1 Safety Provisions

The work described in this manual may only be performed by specialist electricians

who have proved their experience with the VAH series and the applicable safety

provisions.

Please read the whole manual carefully before working on the circuit-breaker.

■ Common specications for high-voltage switchgear and controlgear: IEC

62271-1

■ The locally applicable accident prevention, operating and work instructions

must be complied with.

■ Installation: IEC 61936-1/HD 637 S11

■ Operation of electrical equipment: EN 505221

1 The national standards applicable in the country where the equipment is to be

installed must be complied with.

Before performing work on the circuit-breaker, it is essential that you comply with the

following instructions:

Danger!

Risk of fatalities due to high voltage. Isolation from high voltage

and earthing must always be ensured before performing assembly

or maintenance work.

Danger!

Risk of fatalities due to high supply voltage. Isolation from supply

voltage must always be ensured before performing assembly or

maintenance work.

Warning!

Risk of injury due to movable parts in mechanical drives. For

maintenance work,

– isolate from supply voltage

– release the circuit-breaker's energy storing device by switching

it OFF-ON-OFF

In case of re or of internal faults, toxic and caustic decomposition products may be

produced. Comply with the locally applicable accident and safety provisions.

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

Applicable standards

and regulations:

Behaviour in case of incidents or

accidents

VAH

6 AGS 531 271-01 | Edition 05/2013

2 Technical details

2.1 Dimensions

The dimensions of the individual VAH variants are specied in the selection list

"Vacuum Circuit Breaker type VA, VAA, VAH, VXA, VXB, VXC".

This document or additional customized dimensional drawings are available on

request.

2.2 Applied standards

■ type-tested

■ dimensioned for indoor installation

■ corresponds to the requirementsfor AC switchgear for voltages above 1 kV acc.

to IEC 62271-100;

■ complies, regarding its switching capacity and insulating level, with ANSI C37....

(please enquire at the manufacturer's).

The vacuum interrupter chambers have been approved by the X-Ray Ordinance

(RöV) of the Federal Republic of Germany up to a maximum voltage amounting to

the rated short-time power-frequency voltage (rated power frequency withstand volt-

age) dened by DIN VDE/IEC. Thus, they satisfy the conditions for operation exempt

of approval up to the voltage in question according to the X-Ray Ordinance (RöV).

2.3 Environmental and operating conditions

VAH circuit-breakers may only be operated under normal operating conditions acc.

to IEC 62271-1. Operation under conditions deviating from these is only admissible

upon consultation with 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 °C –5/+401

Average value over 24 hours °C ≤ 351

mean rel. air humidity: 24 hour/1 month % ≤ 95/≤ 90

Installation altitude above sea-level m ≤ 10001

1 other values available on request

Series VAH circuit-breakers are:

Type approval of vacuum

interrupter chambers

acc. to RöV

VAH

7AGS 531 271-01 | Edition 05/2013 7

2 Technical details

2.4 Nameplate

The type designation on the nameplate (Fig. 1, item 1) species essential technical

data.

Fig. 1

Nameplate

1 Type designation

2 Technical data

3 Year of construction

4 Serial number

The following example shows the composition of the type designation:

VAH 17 - 63 - 50 - 40

Series VAH

Rated Voltage Ur = 17 kV

Rated short-circuit breaking current Isc = 63 kA

Rated normal current Ir = 5000 A

Pole center spacing 400 mm

When submitting enquiries to the manufacturer or ordering spare parts, the following

information is required:

■ Type designation

■ Serial number

■ Year of construction

VAH

8 AGS 531 271-01 | Edition 05/20138

2 Technical details

2.5 Control and actuation units

The drive is basically designed as well for manual tensioning of the energy-storing

device (make spring).

The drive may be equipped with further control and actuation units.

■ Push switch S21 - S25

– actuated by the energy-storing device.

■ Auxiliary switches S1

– are actuated by the switch shaft. The switching positions of the switch

elements are dependent on the switch status "Make" and "Break" of the

circuit-breaker.

– 12 / 16 / 20 pole versions may be supplied.

– They are set in compliance with the wiring diagram. Refer to Fig. 3, page 9

regarding other settings.

A number of switch elements are reserved for internal breaker-control.

■ Shunt opening releases F11-F12

■ Shunt closing release F2

■ Blocking coil Y1

– Blocking coils prevent the circuit breaker from being closed and opened

via the push-buttons “ON“ or “OFF“, as well as manual actuation of the

disconnector truck.

– If the rated supply voltage has failed or is shut off, all blocking coils are in

"blocked" position.

■ Push switches S41 - S43

– S41 and S42 actuated by the button "Make" and "Break"

– S43 actuated by the button "Break"

■ Motor M1

– for tensioning the energy-storing device (closing spring)

■ Anti-pumping relay (K01)

– If an ON and OFF command is simul taneously and permanently present

at the circuit-breaker, the latter returns to its initial position after closing. It

remains in this initial position until the ON command is issued again. This

prevents continuous closing and opening (“pumping”).

■ Terminal strip (X01)

Information about the power consumption of coils and the motor is available from the

manufacturer.

To this effect, the auxiliary voltage data is required.

Magnet coils / motor Power consumption [W]

Shunt closing release 160

Shunt opening release ca. 50

Under-voltage release without time delay 15

CT powered release 12

Blocking magnet 12

Motor 200-250

Motor tensioning time ≤ 12 s

Power consumption of magnet

coils and motor:

VAH

9AGS 531 271-01 | Edition 05/2013 9

2 Technical details

The switching functions are set in the factory in accordance with the LV wiring draw-

ings.

Other functions of the auxiliary switch may be set by means of adjustable cams.

1. Set circuit-breaker to "Break";

energy-storing device detensioned.

2. Remove cover plate (loosen ve screws).

3. Set desired switch function.

4. Latch cam in the driver again.

5. Check whether or not the cam has latched in the changed position.

6. Replace cover plate on completion of settings.

Cam

Viewing direction

for setting

Fig. 2

Setting the cams of the auxiliary switch

Position of cams for

setting procedure

circuit-breaker „Break“

circuit-breaker

Breake Make

Advanced

break

contact

Delayed

break

contact

Auxiliary swich

made

Wiper

Delayed

make

contact

Advanced

make

contact

Fig. 3

Possible switching functions of auxiliary switch (switching programm)

Rated supply voltage VDC VAC

[V] 24 48 60 110 220 120 230

Switching capacity [A] 8 4 3 2 1 10

Short-circuit level 100 A for a time period of 30 ms

Time constant T=L/R [ms] ≤ 20 −

Rated continuous current [A] 10 −

Auxiliary switches

Setting procedure:

Technical Data

VAH

10 AGS 531 271-01 | Edition 05/201310

2 Technical details

2.6 Intended use

Series VAH vacuum circuit-breakers are exclusively intended as switching units in

air-insulating medium-voltage switchgear. They may only be used in the scope of the

specied standards and the switchgear-specic 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 manual are not complied with,

■ the circuit-breaker is not operated according to its intended use (see above)

■ the circuit-breaker is assembled, connected or operated improperly,

■ accessories or spare parts are used which have not been approved by the

manufacturer,

■ the circuit-breaker is converted without the manufacturer’s appro val, or if inad-

missible parts are attached.

2.7 Disposal after the end of service life

A material and recycling data sheet is available for disposal of the vacuum circuit-

breaker unit VAH at the end of its service life; this can be provided on request.

Disposal is performed by the manufacturer’s Service Center as a service subject to

a fee.

Liability Disclaimers

VAH

11AGS 531 271-01 | Edition 05/2013

3 Overview of variants VAH

Fig. 4

Heavy-duty vacuum circuit-breaker VAH,

≤ 1250 A

Fig. 5

Heavy-duty vacuum circuit-breaker VAH,

≤ 1250 A on transport cassette

Fig. 6

Heavy-duty vacuum circuit-breaker VAH,

≤ 4000 A

Fig. 7

Heavy-duty vacuum circuit-breaker VAH,

≤ 4000 A on transport cassette

VAH

12 AGS 531 271-01 | Edition 05/201312

3 Overview of variants VAH

673

854

275 275

1816

501

Fig. 8

Heavy-duty vacuum circuit-breaker VAH, ≤ 8000 A with fan attachment

Fig. 9

Generator circuit-breaker VAH 17-63-50-40 meets the requirements of IEEE C37.013

VAH

13AGS 531 271-01 | Edition 05/2013

4 Delivery, Storage and

Transport

4.1 Delivery

– Handle shipping units carefully when unloading and unpacking them

– Shipping units must be unpacked immediately after receipt. The insurance com-

pany must be notied immediately about any damage occurred in transit

– On delivery, the consignment must be checked for completeness.

– The manufacturer must be notied in writing about any discrepancies.

4.2 Storage

The transport packaging is not intended for storage. The risk of storing the parts in

packed condition shall be the consignee's responsibility!

4.3 Transport of the circuit-breaker

Warning!

Make sure the crane mounting harness is strong enough to bear

the weight of the circuit-breaker!

■ Transport using a forklift truck:

Only transport the circuit-breaker on a pallet.

■ Transport without pallet:

– on transport cassette according to Fig. 5 on page 11.

– The circuit-breaker is lifted as shown in the drawing on the right. To this

effect, a crane mounting harness is required.

Fig. 10

Transport

Rated current [A] ≤ 1250 ≤ 4000

Weight1[kg] 200 500

1 The weights of the vacuum circuit-breaker VAH are approximate and include neither packing

nor transport cassette.

Weights

VAH

14 AGS 531 271-01 | Edition 05/2013

5 Assembly

5.1 Before installation

– Dimensional drawings are supplied on request.

– Check the technical data on the name plate.

– Check auxiliary voltage of the incorporated control and actuation units.

The circuit-breaker is delivered in the position "Broken" and energy-storing device

"detensioned".

Warning!

Do not tension the energy-storing device before completing in-

stallation. Danger of injuries.

Warning!

Comply with the safety provisions in Chapter 1, page 5!

5.2 Fixing the circuit-breaker in place

■ Switching devices for direct attachment:

– Fastening points are provided at the ends of the insulator

– supports with predened hole positions (Fig. 11).

– In the event of an installation position (service position) differing from the

standard, harmonise installation position with the manufacturer.

– The circuit-breaker must not be distorted by the fastening.

– Screws and tting parts are not supplied with the breaker.

Important:

Comply with the tightening torques specied for screw-fastening (refer

to Chapter 9 "Annex" as of page 33).

The circuit-breakers are supplied with tted crane hooks.

Important:

After attachment the crane hooks must be removed.

378

140

max.10

max.

max.30

M10

max.20

max.30

Fig. 11

Examples for xing

VAH

15AGS 531 271-01 | Edition 05/2013 15

5 Assembly

Fig. 12

Crane hooks (remove after tting the breaker)

■ Switching devices on transport cassette:

– Four drilled holes diam. 18 mm each are provided in the transport cassette

for fastening on the oor or on rails.

100

570

Fig. 13

1 Fastening points in the transport cassette

VAH

16 AGS 531 271-01 | Edition 05/201316

5 Assembly

5.3 Fitting the partitions

– Fit two brackets on the supporting plate (centre switch pole) using 2 x M10

plastic screws.

– Screw partitions onto brackets using 2 x M10 plastic screws.

– In the case of double partitions, screw on 2nd partition at four places using

plastic disc spacers.

– Perform assembly in accordance with the enclosed assembly drawings.

Important:

Comply with the tightening torques specied for screw-fastening (refer

to Chapter (refer to Chapter 9.4 on page 34).

M10

Fig. 14

Attachment of partitions

1 Bracket

2 Plastic disk

5.4 Interlocking further units

If, dependent on the position of the circuit-breaker, other devices shall be interlocked

or controlled, it must be borne in mind that the masses and forces acting for inter-

locking purposes do not inuence the switching behaviour of the circuit-breaker.

Please consult manufacturer.

VAH

17AGS 531 271-01 | Edition 05/2013 17

5 Assembly

5.5 Connecting the busbars

Connection surfaces are surfaces for the passage of current. Material of the con-

nection surfaces on the heavy-duty circuit-breaker:

silver-plated copper.

Warning!

Aluminium busbars must never be connected to silver-plated

connection surfaces of the heavy-duty vacuum circuit-breaker.

Inadmissible matching of materials.

■ Take into consideration DIN 43 671 as regards the rating of continuous current.

Operators outside Germany should apply the relevant local regulations.

■ Maximum spacing from the nearest support point of the connections of the

circuit-breaker towards the switch pole axis:

– at rated short-circuit breaking current 50 kA = 825 mm (3 x pole center

spacing).

– at rated short-circuit breaking current 63 kA = 500 mm.

If the nearest supporting point is not situated in the direction of the breaker pole axis,

care must be taken that no higher current forces act on the circuit-breaker switch

pole.

Important:

●Coat contact surfaces (refer to Chapter 9.3, page 33).

●Comply with the tightening torques specied for screw-fastening

(refer to Chapter 9.4, page 34).

■ Make busbar bolt and screw connections in compliance with DIN 43 673.

The heavy-duty vacuum circuit-breaker must not be distorted by screwing on the

busbars.

Rated current [A] Minimum busbar cross section

[mm2]

Material

≤ 4000 Connection as DIN 43 671 Copper

> 4000 4000 Copper

5000 - 800018000 Copper

1 with ventilator set

1 11 1

Fig. 15

1 Busbar connection

Busbar cross-sections for

connection to the heavy-duty

vacuum circuit-breaker VAH

VAH

18 AGS 531 271-01 | Edition 05/201318

5 Assembly

5.6 Earth connection

(Connect station earth to the earth connection of the circuit-breaker.)

■ Choose cross-section and material of the earth conductor in compliance with

DIN VDE 0141 or national installation specication.

Important:

●Coat contact surfaces (refer to Chapter 9.3, page 33 ).

●Comply with the tightening torques specied for screw-fastening

(refer to Chapter 9.4, page 34).

■ Protective earthing may also be established through the fastening screws in the

prole of the rear plates of the drive cabinet if galvanised ratchet screws are

used as fastening screws whose ratchet penetrates the varnish.

Admissible thermally active short- time current per ratchet screw M12: 4 kA (1 s);

2.7 kA (3 s).

■ Screw connections M12

95 115

M12

Drive cabinet

Fig. 16

Earth connection on heavy-duty vacuum circuit-breaker (steel)

500

M12

Fig. 17

Earth connection on transport cassette (steel)

VAH

19AGS 531 271-01 | Edition 05/2013 19

5 Assembly

5.7 Connecting the control cables

Connection by means of (Fig. 18):

– plug or

– terminal strip in the drive cabinet.

Fig. 18

External control cables

1 Opening for control and auxiliary cables

2 Plug alternatively Externe Steuerleitungen

On connection by terminal strip

■ deinstall cover plate (ve screws).

■ connect the external control cables through the terminal strip and lay them to

the outside through the opening in the drive cabinet.

The following may be connected:

■ exible wires up to 1.5 mm2 (only on connection by plug)

■ solid single wires up to 2.5 mm2.

The binding wiring diagram is situated as adhesive circuit diagram on the inner side

of the cover plate.

■ If additional control cables are installed in the drive cabinet, sufcient spacing to

moving parts of the drive must be provided.

■ Reinstall cover plate after the external control cables have been connected.

Important:

Comply with the tightening torques specied for screw-fastening (refer

to Chapter 9.4 on page 34).

VAH

20 AGS 531 271-01 | Edition 05/2013

6 Commissioning

6.1 Final steps

Danger!

Risk of fatalities due to high voltage. All active parts must be

earthed.

■ Check securing bolts.

■ Check the conductor bars’ screw connections using a torque wrench.

■ Check the screw connections of the earth terminal.

■ Check wiring laid on site.

Minor damage to the paint can be repaired using a commercially available touch-up

pen (standard colour RAL 7044 or corresponding colour) (see Chapter 9.2 “Auxiliary

products” on page 33).

■ Check the circuit-breaker for damage which might be due to transport or as-

sembly work.

■ Compare the data on the nameplate (see Chapter 2.4 on page 7) to the re-

quired rating specications.

■ Check rated supply voltage of control and operating devices.

■ Check surfaces of insulating components for impurities. If necessary, clean (see

Chapter 8.3 on page 26).

6.2 Checking switching functions and interlocks

Danger!

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

must be earthed.

Important:

●For switching operations, comply with Chapter 7 “Operation” as of

page 21.

●In case supply voltage is not available,

–blocking coils (optional; lock circuit-breaker button in discon-

nected position) are in locked position, thus blocking manual

switching operations;

–there is a dropped-out undervoltage release in the circuit-

breaker (optional).

●The energy-storing device of the circuit-breaker drive is charged

autonomously as soon as the supply voltage is applied.

1. Charge energy-storing device using the crank.

Check the spring position indicator.

2. Switch circuit-breaker on and off several times by hand.

Check position indicator.

3. Check electrical functions of control and operating devices.

– Apply auxiliary voltage

– Perform switching operations and check for proper working order and the

function of the interlocks by actuating the shunt release.

– Watch position indicator.

4. Check interlocks between circuitbreaker and other devices.

Checking assembly

Damaged paint

Inspection

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