VA, VAA, VXC - Schneider Electric · PDF fileVA, VAA, VXC Vacuum Circuit-Breakers up to 38 kV...
Click here to load reader
Transcript of VA, VAA, VXC - Schneider Electric · PDF fileVA, VAA, VXC Vacuum Circuit-Breakers up to 38 kV...
VA, VAA, VXCVacuum Circuit-Breakersup to 38 kV
Operating Manual
Nr. AGS 531 171-01Edition 06/05
T&D
Operating Manual
MEDIUM VOLTAGE SWITCHGEAR
Manufacturer:
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 hesitate tocontact:
Service CenterD-93055 RegensburgPhone +49 (0)9 41/46 20-777Fax +49 (0)9 41/46 20-778
−2005− AARREEVVAA SSaacchhsseennwweerrkk GGmmbbHH
AREVA Sachsenwerk GmbH
AREVA Sachsenwerk GmbH
IMPORTANT NOTE
The Operating Instructions, which are exclusively valid are always supplied by AREVA Sachsenwerk GmbH together withthe product in question. Our products may only be commissioned, operated, serviced, repaired or decommissioned to-gether with Operating Instructions which have been directly enclosed to the product in question by the factory.
On the other hand, this electronic version of the operating instructions is provided to the customer at his/her request forinformation only. None of our products may be commissioned, operated, serviced, repaired or decommissioned on thebasis of this electronic version.
Non-compliance with this instruction may entail serious damage to the product, the objects pertaining to it, as well ashealth hazard or mortal danger. AREVA Sachsenwerk GmbH shall not be held liable for any such damage.
1 Regulations, provisions,operating conditions 4
1.1 Remarks on this manual 41.2 Terms and symbols used 41.3 Use in line with the intended purpose 41.4 Applied standards 51.5 Safety provisions 51.6 Disposal after the end of service life 5
2 Technical data 62.1 Type designation 62.2 Operating times 62.3 Control and operating devices 7
3 Variant overview 9
4 Delivery, storage and transport 104.1 Delivery 104.2 Storage 104.3 Transport 10
5 Assembly 115.1 Instructions for assembly 115.2 Fastening the circuit-breaker 115.3 Locking of additional devices 125.4 Pole partitions 125.5 Connecting the conductor bars 125.6 Earth terminal 135.7 Connecting the control lines 13
6 Commissioning 14
7 Operation 157.1 Operator interface and operating elements 157.2 Charging the energy storing device 167.3 Switching operations 16
8 Servicing 178.1 General 178.2 Cleaning insulating components 178.3 Servicing schedule 178.4 Numbers of breaking operations
at summation current limit 188.5 Lubrication instructions 198.6 Replacement of control and
operating devices 22
9 Annex 259.1 Accessories 259.2 Auxiliary products 259.3 Screw couplings 259.4 Treatment of firmly screw-connected
switching surfaces 26
3
Contents
1.1 Remarks on this manual
This manual describes transport, as-sembly, operation, handling andmaintenance of vacuum servicebreakers VA, VAA and VXC.
It must be stored so that it is at anytime readily accessible for and canbe used by persons who are to workon the switchgear.
When re-selling the circuit-breakeror the switchgear with circuit-brea-ker, make sure that this manual istransmitted as well.
For assembly and operation of thecircuit-breaker, the operating manualof the switchgear in which it is ope-rated must be complied with.
All dimensions specified in this ma-nual are metric.
1.2 Terms and symbols used
This manual uses certain terms andsymbols. They warn about dangersor provide important informationwhich must be complied with at allcosts so as to avoid danger and da-mage:
„WARNING“This symbol warns of dan-gerous electrical voltage.Contact with voltage mayresult in fatal injury!
„WARNING“This symbol is used for in-structions non-compliancewith which may result in se-rious injury, death or seriousmaterial damage.
„NOTICE“This symbol is used for in-formation which is importantto avoid damage.
1.3 Use in the line withthe intended purpose
Vacuum circuit-breakers VA, VAAand VXC are exclusively intended asswitching units in air-insulated medi-um-voltage switchgear. They mustonly be used in the scope of thespecified standards and the switch-gear-specific technical data. Any ot-her use constitutes improper useand may result in dangers and da-mage.
Disclaimer of liability
The manufacturer shall not be heldresponsible for damage which oc-curs if
• instructions in this manual are notcomplied with,
• the circuit-breaker is not opera-ted according to its intended use(see above),
• the circuit-breaker is assembled,connected or operated improper-ly,
• accessories or spare parts areused which have not been appro-ved by the manufacturer,
• the circuit-breaker is convertedwithout the manufacturer's appro-val, or if inadmissible parts are at-tached.
In case of queries and orders forspare parts, the following data onthe rating plate must be specified:
- Type designation
- Factory number
- Year of construction
NOTICE:Operating reliability andservice life depend oncorrect operation.
Regulations, provisions, operating conditions
1
4
1.4 Applied standards
The three-pole vacuum circuit-brea-ker VA, VAA, VXC
• corresponds to the requirementsfor AC switchgear for voltagesabove 1 kV acc. to IEC 62271-100;
• complies, regarding its switchingcapacity and insulating level,ANSI C37.... (please enquire atthe manufacturer's)
Type approval of vacuum interrup-ter chambers acc. to. RöV
The vacuum interrupter chambershave been approved by the X-RayOrdinance (RöV) of the Federal Re-public of Germany up to a maximumvoltage amounting to the rated short-time power-frequency voltage (ratedpower frequency withstand voltage)defined by DIN VDE/IEC. Thus, theysatisfy the conditions for operationexempt of approval up to the voltagein question according to the X-RayOrdinance (RöV).
Environmental and operating conditions
Circuit-breakers VA, VAA and VXCmay only be operated under normaloperating conditions according toIEC 60694. Operation under conditi-ons different from these is only ad-missible upon consultation with themanufacturer and obtention of hisapproval.
1.5 Safety instructions
The work described in this manualmay only be performed by specialistelectricians who have proved theirexperience with the circuit-breakerVA, VAA, VXC and EN 50110-1.
Applicable standards and regulati-ons:
• Adhere to the locally applicableaccident prevention, operatingand work instructions.
• Installation: HD 637 S1
• Operation of electrical equip-ment: EN 50110-1
Read these instructions carefully be-fore you work on the circuit-breaker,and perform the work detailed in itaccording to the descriptions. Onlyperform such work if you have un-derstood the instructions. Do notperform any work on the circuit-breaker which is not described inthis manual.
Before starting work onthe circuit-breaker, de-energize the system, ve-rify it for zero voltageand earth the systemaccording to the appli-cable safety rules pur-suant to EN50110-1.
Before performing workon the circuit-breaker,switch off the supplyvoltage and prevent itfrom reclosing.
Risk of injury due to theenergy storing device.Before starting work, re-lease the energy storingdevice via the operatingsequence OFF-ON-OFF.
1.6 Disposal after theend of service life
A manual on disposal after the endof the service life is available for dis-posal of the circuit-breaker VA, VAA,VXC. Disposal at the end of servicelife is performed on request by theservice center at the manufacturer's.
5
Ambient conditions
Temperature class:"Minus 5 indoors" (optional "Minus 25 indoors")
Ambient temperaturemin./max.
-5 /40oC
Average value over 24hours (max.) 35oC
Maximum installation altitude above sea level(higher installation altitu-des possible on re-quest)
1000m
2.1 Type designation
The type designation of the vacuumcircuit-breakers - refer to rating plate- specifies the essential technicaldata. The following example showsthe composition of the type designa-tion:
Rated voltage [kV] 12 17,5 24 36 38
Opening time at rated voltageof the release
for release 160 W
for release 25 W[ms]
[ms]
30 - 50
45 -65
Arc duration (max. value) [ms] 6 - 12 6 - 14
Closing time at rated voltage ofthe release
[ms] 35 - 75
Minimum command time"OFF"Electrical tripping
for release 160 W
for release 25 W
[ms]
[ms]
20
50
Minimum command time "ON" [ms] 20
Motor charging time [s] < 12
2.2 Operating times
6
Technical data2
EExxaammppllee VA 63 12 / 336 - 22
VASeries VAA
VXC
Rated short-circuit making current 63 kA
Rated normal current 1250 A
Rated voltage 36 kV
Insulation level: Rated lightingimpulse withstand voltage 170kV
2.3 Control and operating devices
The drive mechanism is designed onprinciple for manual charging of theenergy storing device (closingspring).
The drive can be equipped with ad-ditional operating and control devi-ces.
Possible components fitted:
Motor
• for charging the energy-storingdevice (closing spring)
Shunt opening release
• 2 ea.
Secondary coil
• 2 ea.
• (Maximum equipment - shuntopening release and secondarycoil, 3 in total)
Under-voltage coil
• 1 ea.
• An additional device prevents re-leasing "OFF" of the circuit-brea-ker on closing, if voltage is onlyapplied to the undervoltage re-lease after switching ON.
Shunt closing release
• 1 ea.
Blocking coil
• The blocking coil prevents thecircuit breaker from being swit-ched on via the "ON" push-but-ton when the rated supply volta-ge has dropped out or has beenswitched off.
Locking mechanism with lock
• The locking mechanism with lockblocks the "ON" or "OFF" but-tons or only the "ON" button (de-pending on design).
Operating counter
• The operating counter indicatesthe number of switching operati-ons.
Push switches
• installed depending on compo-nents fitted and operating se-quence
Extension of the switch shaft
• The switch shaft can be equip-ped subsequently with "shaft ex-tension", at choice on the right,left side or on both sides. To thiseffect, refer to section 5.4 "Lo-cking of additional devices".
Anti-pumping relay
If an ON and OFF command is si-multaneously and permanently pre-sent at the circuit-breaker, the latterreturns to its initial position after clo-sing. It remains in this initial positionuntil the ON command is issuedanew. This prevents continuous clo-sing and opening ("pumping").
7
Solenoids Power con-sumption [W]
Shunt closing release160
Shunt opening release without auxiliary spring energy store
Shunt opening release with auxiliary spring energy store 25
Undervoltage release without/with delay 15
Secondary coil12
Blocking coil
Motor 200 - 250
Information about the power consumption of coils and the motor is available from themanufacturer. To this effect, auxiliary voltage data is required.
Power consumption of solenoids and motor, motor charging time
2.4 Auxiliary switches
Switching functions on delivery, referto circuit diagram.
Other switching functions of the au-xiliary switch can be set by adjusta-ble cams.
The setting may only be performedby specialists who dispose of experi-ence regarding the installed auxiliaryswitches.
WARNING!Refer to the safety in-structions in section 1.5.
The auxiliary switches are accessiblefrom the front end of the switchgearafter removal of the front cover.
Setting procedure:
1. Remove cover plate(release five screws).
2. Set desired switching function.
3. Click cam back into catch.
4. Check whether the cam has lok-ked in the changed position.
5. After adjustment, mount coverplate.
Cam
Viewing direction for adjustment
Position of cams during adjustmentCircuit-breaker OFF
Circuit-breaker OFF ON
Late make contact
Early make contact
Late break contact
Wiping contact
Auxiliary switch "ON"
Early break contact
Fig. 1
Setting the cams of the auxiliary switch
Fig. 2
Possible switching functions of the auxiliary switch (switching program)
Rated supply voltageVDC VAC
[V] 24 48 60 110 220 120 230
Switching capacity [A] 8 4 3 2 1 10
Rated short-time current 100 A for a duration of 30 ms
Time factor T=L/R [ms] < 20 -
Rated continuous current [A] 10
Auxiliary switch
8
Variant overview3
Fig. 4
Vacuum circuit-breaker, series VA,VXC, switch pole
Fig. 5
Vacuum circuit-breaker, series VAA,switch pole
Fig. 3
Vacuum circuit-breaker, series VA, VXC
9
4.1 Delivery
• Handle shipping units carefullywhen unloading and unpackingthem.
• Shipping units must be unpackedimmediately after receipt. Any da-mage occurred in transit must berecorded and reported immedia-tely to the manufacturer.
• On delivery, the consignmentmust be checked for complete-ness.
• The supplier must be notified inwriting about any differences.
4.2 Storage
The transport packaging is not inten-ded for storage. The risk of storingthe parts in packed condition shallbe the consignee's responsibility!
4.3 Transport
TTrraannssppoorrtt uussiinngg aa ffoorrkklliifftt ttrruucckk:: Only transport the circuit-breaker ona pallet.
TTrraannssppoorrtt wwiitthhoouutt ppaalllleett::Lift circuit-breaker acc. to Fig 6. Tothis effect, a crane mounting harnessis required.
WARNING:Make sure the cranemounting harness is
strong enough to bear theweight of the circuit-breaker!
Delivery, storage and transport4
Series Rated voltage[kV]
Weight[kg]
VA12 / 17,5 / 24 140
36 160
VAA 12 / 17,5 / 24 105
VXC24 130
36 / 38 160
Approximate values without packaging in case of maximum rated (normal) current
Weights
10
< 90
Fig. 6
Transport without pallet
5.1 Instructions for as-sembly
• Check data on rating plate.
• Check rated supply voltage of thecontrol and operating devices in-stalled.
The circuit-breakers are supplied inposition "OFF" and with the energystoring device "released".
WARNING!Refer to the safety in-structions in section 1.5.
5.2 Fastening the circuit-breaker
• The securing points are the endsof the post insulators with speci-fied hole pattern. In special mo-dels, the securing holes are pro-vided with threaded inserts. Forexamples for the securing design,see below.
• Any other than standard installati-on positions must be agreedupon with the manufacturer.
• Screws and attachments are notincluded in the scope of supplies.
• Parts for fastening
- must be suitable for theweight of the circuit-breaker.
- may not protrude by morethan 10 mm over the post in-sulators to the circuit-breakerpoles.
• The circuit-breaker must not bedeformed by the fastening.
NOTICE:Comply with the speci-fied tightening torques(refer to Annex).
The dimension drawing is providedon request.
Assembly5
Fig. 7
Fastening example for up to 24 kV
Fig. 8
Fastening example for 24 kV to 38 kV
11
• Remove transport aid and jackrings.
• Take account of DIN 43 670 andDIN 43 671 regarding the dimen-sioning for continuous current.
• Maximum distance of the nextsupport point from the circuit-breaker's terminals in the directi-on of the switch pole axis: 3xpole center spacing of the cir-cuit-breaker (unless the next sup-porting point is located in the di-rection of the switch pole axis,make sure that the circuit-breakerpole is not exposed to higherelectrodynamic forces).
• Screw-fasten conductor bar ac-cording to DIN 43 673.
• The circuit-breaker must not bedeformed by screw-fastening theconductor bars.
5.3 Locking of additional devices
If locking of other devices is to beactuated or controlled depending onthe circuit-breaker position, it mustbe ensured that the masses and for-ces acting on the units do not inter-fere with the switching characteri-stics of the circuit-breaker.
The torque load attacking on theswitch shaft must not exceed 2 Nm.
If circuit-breakers are equipped withswitch shaft extension and the latteris exposed to transverse forces, anadditional bracket bearing is requirednear the shaft end.
5.4 Pole partitions
If circuit-breakers are equipped withpole partitions (depending on thetechnical data), the latter are enclo-sed. The pole partitions must bemounted according to the enclosedattachment drawing.
12
5.5 Connecting the conductor bars
WARNING:Aluminium conductorbars must not be con-nected to silver-plated
connection areas of the circuit-breaker. Inadmissible matchingof materials.
NOTICE:Coat contact surfaces(refer to Annex).
NOTICE:Comply with the speci-fied tightening torques(refer to Annex).
Connection areas oncircuit-breaker
Connection areaon conductor bar or cable lug
Series VAA:Connection for 630AMaterial: Aluminiumbright
- Copper- Aluminium
Series VAA: Connection for 1250AMaterial: Aluminium, silver-plated
Series VA/VXC:Material: Copper, silver-plated
- Copper- Copper, silver-plated- Aluminium, silver-plated
In case of aluminium, metallically bright,use an intermediate layer of copper (thickness0.1 mm) corresponding to the fullsize of the con-necting area.To this effect, a 13% reduction ofthe rated (normal) current must be taken intoconsideration on principle, or an enquiry must besubmitted to the manufacturer.
Earth connectionMaterial: Steel
Selection acc. to HD 637 S1 or appropriate na-tional interpretation clause
(Connection areas are current conduction areas)
Material of current conductors or cable lugs for connection of the circuit-breaker
13
5.7 Connecting the control lines
The control lines are connected, de-pending on design, via control con-nectors or control lines to the termi-nal strips in the drive casing. Thecontrol lines are wired in the circuit-breaker up to the control connectoror up to the terminal strip.
Single-wire conductors or strandscan be connected
• to terminal strip up to 2,5 mm2
• in control connector up to 1,5mm2
Terminal with control connector
Push the control connector onto the64-pin right-angle plug-and socketconnector of the circuit-breaker, andlock it.
If connection to a terminal strip is possible:
1. Remove the cover plate.
2. Connect external control lines viathe terminal strip and route themto the outside through the cu-touts in the drive casing (Fig. 10).
The circuit diagram which is bin-ding for the system in question isglue-fastened on the inside of thecover plate.
If additional control lines are pla-ced in the drive casing, leave asufficient distance from the mo-vable parts of the drive.
3. After connecting the externalcontrol line, mount the cover pla-te.
NOTICE:Comply with the tighte-ning torques specifiedfor screw-fastening (re-fer to Annex).
5.6 Earth terminal
• Design and dimensioning of thecircuit-breaker's earth terminalacc. to IEC 62271-100.
• Select the cross section of andthe material used for the earthconductor according to HD 637S1 or the appropriate nationalwork instruction.
NOTICE:Coat contact surfaces(refer to Annex).
NOTICE:Comply with the speci-fied tightening torques(refer to Annex).
Connect earth conductor of stationto earth terminal of circuit-breaker(Fig. 9).
Protective earthing is also admissiblethrough the securing bolts on thepost insulators, if galvanized self-lok-king bolts whose toothing penetratesthe paint, are used as securing bolts.
Admissible thermally effective short-time current per self-locking boltM12:
- 4 kA (1 s)
- 2,7 kA (3 s)
1 2
Fig. 10
Cutout in drive casing
1 Cutout for control and auxiliary linesin drive casing
2 Connector (alternatively)
Fig. 9
Earth terminal
• Check circuit-breaker for externaldamage.
• Make sure that there are no ex-ternal parts in the circuit-breakercompartment.
• Check surface of insulating com-ponents for impurities. If neces-sary, clean, as described inChapter 8.
• Check assembly work
- Check securing bolts.
- Check the conductor bars'screw couplings using a tor-que wrench.
- Check the screw coupling ofthe earth terminal.
Perform functional tests
NOTICE:Observe the operatingand locking conditionsacc. to Chapter 7.
1.Charge energy-storing device usingthe crank.
Check the spring position indicator.
2.Switch circuit-breaker on and off se-veral times by hand. Check positionindicator.
3.Check electrical functions of controland operating devices.
NOTICE:The energy storing devi-ce of motorized circuit-breakers is charged au-
tomatically as soon as the mo-tor's auxiliary supply is applied.
Apply auxiliary voltage
Perform switching operations andcheck for proper working order byactuating the shunt release and theblocking coil.
Watch position indicator.
4.Check interlocks between circuit-breaker and other devices.
Commissioning6
14
Operation7
Name plate
Position indicator, energy-storing device charged/released
ON button
OFF button
Opening for crankto charge the
energy-storing device
Operations counter
Position indicator ON/OFF ("CLOSE/TRIP")
Fig. 11
Control panel
Pos. Position indicator
Energy-storing device(closing spring)
Position indicator
ON/OFF ("CLOSE/TRIP")Switch position
Opening spring possible operating sequence
1 released OFF (TRIP) released none
2 charged OFF (TRIP) released, is charged via C C - O
3 released ON (CLOSE) charged O
4 charged ON (CLOSE)charged, is re-charged viaC
O - C - O
Position indicators on circuit-breaker and possible operating sequences
15
C = Closing (ON)O = Opening (OFF)
7.1 Operator interface and operating elements
7.2 Charging the energystoring device
Manually
Initial position:
• Circuit-breaker in "OFF" position.
• Energy storing device "released"(Table, section 7.1, item 1)
Move circuit-breaker in "ready-for-closing" position
1. Insert crank into opening for ten-sioning the energy storing device
2. Perform approx. 35 turns (clock-wise) until position indicator"charged" appears (starting themotor during this procedure doesnot involve a danger).
3. After charging, remove the crank.The circuit-breaker is ready forclosing (Table, section 7.1, item2).
Via motor
The energy storing device of motori-zed circuit-breakers is charged auto-matically as soon as the motor's ra-ted supply voltage is applied.
7.3 Switching operations
NOTICE:The specific interlocksbetween the circuitbreaker and the panelmust be taken into ac-count.
Closing (ON)
• Push button "ON" - or
• apply voltage to shunt closing re-lease.
The position indicator shows theswitch position "ON" (Table, section7.1, item 3).
The position of the auxiliary switchhas changed.
The energy storing device can becharged immediately after switchingON (by hand or by motor). If voltageis applied to the motor, charging isperformed automatically.
• The position indicator shows theenergy storing device position"charged" (Table, section 7.1,item 4).
Opening (OFF)
• Push button "OFF" - or
• switch off via shunt opening re-lease, undervoltage release or se-condary coil.
The position indicator shows theswitch position "OFF" (Table, section7.1, item 1 or 2).
The position of the auxiliary switchhas changed.
16
8.1 General
The series VA, VAA and VXC vacu-um circuit-breakers do not requiremaintenance for a service life of over20 years.
In case of doubt or if deviations fromthe circuit-breaker's proper workingorder are detected, the manufacturershould be contacted.
A visual inspection of the circuit-breaker and switching tests are re-commended, depending on thestress imposed during operation andon the operating conditions, every 4years (VA, VAA) or yearly (VXC). Incase of dust deposits, the circuit-breaker must be cleaned by expertstaff.
WARNING:Comply with the safetyprovisions in section1.5!
For maintenance work, the circuit-breaker must not be disassembled,except in case of replacement asdescribed.
Once maintenance is complete, pro-ceed as described in Chapter 6"Commissioning".
8.2 Cleaning insulatingcomponents
Cleaning of plastic and ceramicparts:
- Partitions
- Post insulators
- Operation rods
- Pull straps
- Ceramics of vacuum interrup-ter chambers
Clean by means of a dry, lint-freecloth. Depending on dirt collected,replace cloth as often as necessary.
Servicing8
Maintenance interval Maintenance work
Series VA, VAA Series VXC
Every 10,000 operating cy-cles (max. 30,000 operatingcycles)
Handle circuit-breaker drive andcircuit-breaker pole acc. to thelubrication instructions, sect. 8.5.
-
Every 25,000 operating cy-cles (max. 75,000 operatingcycles)
-
• Handle circuit-breaker drive and circuit-breakerpole acc. to the lubrication instructions, sect. 8.5.
• Replacement of control and operating devicessubject to consultation of the manufacturer (referalso to section 8.6)
• ECO Exchange Program subject to consultationwith the manufacturer
Once the summation currentlimit has been reached (referto section 8.4)
Replace circuit-breaker poles subject to consultation with the manufacturer (replace-ment instructions are available on request).
8.3 Servicing schedule
17
IIrr = Rated (normal) current [A]
IISSCC = Short-circuit breaking current [kA]
Vacuum circuit-breaker VA, VAA
8.4 Numbers of breaking operations up to summation current limit
Vacuum circuit-breaker VXC
IIrr [A]IISSCC [kA]
25 31,5 40 50
630 x
1250 x x x
1600 x x x x
2000 x x x x
2500 x x x x
Vacuum circuit-breaker Type VA
Vacuum circuit-breaker Type VAA
Vacuum circuit-breaker Type VXC
n
30 000
10 000
1000
100
10
50
500
5000
I SC
Rated normal current I 630 A, 1250 A, 1600 A, 2000 A, 2500 A
Num
ber o
f bre
akin
g op
erat
ions
I r
r
IaBreaking current log
n
25 000
10 000
1000
100
10
50
500
5000
I SC
Rated normal current I 1250 A, 2500 A
I r
50 000r
Num
ber o
f bre
akin
g op
erat
ions
IaBreaking current log
IIrr [A]IISSCC [kA]
16 20 25
630 x x
1250 x x x
IIrr [A]IISSCC [kA]
25 31,5
1250 x x
2500 x x
18
The diagrams define exclusively theadmissible summation current limit.They indicate whether the vacuuminterrupter chambers need to be re-placed.
Depending on the rated normal vol-tage, not all the combinations shownmay be possible.
The data for the rated normal currentand short-circuit opening current areindicated on the rating plate.
NOTICE:Due to the further developmentand operating experience re-garding vacuum interrupterchambers, contact erosion in-spection is no longer conside-red.
8.5 Lubrication instructions
WARNING:Comply with safety pro-visions (section 1.5).
Coat circuit-breaker poles with oil:
Liquid lubricant FL for bearings,joints and guide systems.
Pour drops of liquid lubricant (oilcan, drip feed lubricator) into the be-aring gap. Liquid lubricant gets bet-ween the bearing surfaces due tothe capillary effect. In case of inac-cessible lubrication points, use anextension tube or spray.
Fig. 12
Circuit-breaker pole VA, VXC, bottom, points of lubrication
Fig. 13
Circuit-breaker pole VAA, bottom, points of lubrication
19
Greasing the drive:
Release front cover via 5 bolts.
WARNING:Comply with safety pro-visions (section 1.5).
The following elements must not belubricated:
- Spring charging mechanism
- Motor
- Ball bearings and sliding be-arings
- Shunt closing release
- Shunt opening release
- Push switch ON - OFF
- Initiator "energy storing device"
- Auxiliary switch
- Plungers of tripping coils
Fig. 14
Overview of points of lubrication in drive (for a schematic view, refer to the following page)
20
Lubrication procedure
Lubricant KL for surfaces slidingupon one another.
Clean lubricating points, e.g. using alint-free cloth or a soft paint-brushand detergent (use sparingly, justwet points of lubrication).
Apply a thin coat of lubricant KL,using e.g. a paintbrush.
Liquid lubricant FL for bearings,joints and guide systems.
Pour drops of liquid lubricant (oilcan, drip feed lubricator) into the be-aring gap. Liquid lubricant gets bet-ween the bearing surfaces due tothe capillary effect. In case of inac-cessible lubrication points, use anextension tube or spray.
8
7
54
6
3
2
1
9
1011
Fig. 15
Points of lubrication and lubricant in the drive
21
8.6 Replacement of control and operating devices
The following electro-mechanicalcomponents may be replaced in thecircuit-breaker's drive as requiredand subject to consultation with themanufacturer:
• Motor
• Anti-pumping relay
• Blocking coil
• Shunt closing release
• Shunt opening release
• Secondary coil
• Undervoltage coil
For replacement of the components,you must release (5 screws) and re-move the front cover.
The appropriate subcomponents canbe released to facilitate access tothe above-mentioned components.
WARNING:Refer to the safety pro-visions in section 1.5!
NOTICE:Compare the label onthe terminal strip to theauxiliary voltage data.
Motor
NOTICE:Check the technicaldata on the motor's ra-ting plate.
Replacement:
1. Disconnect and mark the feederwires.
2. Release the three motor securingbolts and pull motor out of itscentering in axial direction.
3. Insert the brand-new motor intothe centering and screw it downusing the securing bolts.
4. Connect the feeder wires.Comply with the marking!
Anti-pumping relay
Replacement:
1. Disconnect and mark the feederwires.
2. Release the two securing boltsand remove the relay.
3. Insert and secure brand-new re-lay.
4. Connect the feeder wires.Comply with the marking!
Fig. 16
Motor
22
Fig. 17
Anti-pumping relay
Blocking coil
Replacement:
1. Disconnect and mark the feederwires.
2. Release the two securing boltsand remove the blocking coil.
3. Insert a brand-new blocking coiland adjust it as described below:
4. Secure the blocking coil.
5. Connect the feeder wires. Com-ply with the marking!
Shunt closing release
Replacement:
1. Disconnect and mark the feederwires.
2. Expel the lock pin, release thetwo securing bolts and removethe auxiliary switch.
3. Bore the hole in the magnetmounting plate of the brand-newshunt closing release to Ø3 H11for the lock pin.
4. Insert and screw-fasten shuntclosing release, but do not yettighten it.
5. Adjust the shunt closing release:
6. In this position, tighten the secu-ring bolts and secure the magnetmounting plate by means of pins.
7. Connect the feeder wires. Com-ply with the marking!
23
Fig. 18
Blocking coil
1
2
3
4
5
Fig. 19
1 Blocking coil2 Angular bracket3 Securing bolts4 Adjust angular bracket (2) using the
securing bolts (3) so that the magnetarmature (5) protrudes over the an-gular bracket by 0 to 1 mm.
Fig. 20
Shunt closing release
1
23
4
5
Fig. 21
1 Shunt closing release2 Semi-shaft3 Clamping lever4 The appropriate semi-shaft has just
been "unlatched". The plunger of thetripping coil is 2 - 3 mm away fromits final position.
5 The clamping lever rests loosely onthe plunger (air gap, approx. 1 mm).
4. Adjust release:
Shunt opening release, secondary release, lowvoltage release
Replacement:
1. Disconnect and mark the feederwires.
2. Release the two securing boltsand remove the auxiliary release.
3. Insert and screw-fasten brand-new shunt opening release, se-condary coil or undervoltage re-lease.
5. In this position, tighten nut ofclamping lever.
6. Connect the feeder wires.Comply with the marking!
24
Text TextTEXT
Text
Text
Text
A: Release attachment with releasing device B: Release attachment directly onto semi-shaft
1 1
2 3
1 1
4
4
Fig. 22
1 Shunt opening release2 Secondary release3 Lowvoltage release4 Semi-shaft
1
23
4
5
Fig. 23
1 Shunt opening release2 Semi-shaft3 Clamping lever4 The appropriate semi-shaft has just
been "unlatched". The plunger of thetripping coil is 2 - 3 mm away fromits final position.
5 The clamping lever rests loosely onthe plunger (air gap approx. 1 mm).
Annex9
25
9.1 Accessories
9.2 Auxiliary products
The auxiliary products are availablefrom AREVA Sachsenwerk GmbH.
The use of other auxiliary products isnot admissible.
Designation Order no.
Lubricant KL0.5-kg can S 008157
Liquid lubricant FL0.5-kg can S 008153
Cleaning agent1l can
S 008152
Designation Order no.
Manual crank AGS 617 810-01
Threadsize
Tightening torque[Nm]
min. max.
M6 7 9
M8 16 24
M10 36 44
M12 63 77
M16 153 187
Threadsize
Tightening torque[Nm]
min. max.
M6 12,5 15,5
M8 32 40
M10 65 79
M12 90 110
M16 243 297
Threadsize
Tightening torque[Nm]
min. max.
M6 0,7 0,9
M8 1,5 2
M10 3 3,9
M12 5,1 6,7
M14 7,6 9,9
M16 10,2 13,2
Table 1:Hex. bolts and socket-head caps-crews (except slotted screws) andnuts (except self-locking nuts)
Table 2:Self-locking bolts and nuts
Table 3:Plastic screws and nuts (Partition at-tachment). No preliminary treatmentof the thread
Threadsize
Tightening torque[Nm]
min. max.
M6 4,5 6,5
M8 10 14
M10 20 27
M12 40 56
M16 80 108
Table 5:Screw coupling between switchingdevice and conductor bar with con-ductor material copper
Threadsize
Tightening torque[Nm]
min. max.
M6 5,5 7,5
M8 15 19
M10 30 40
M12 60 76
Table 4:Screw coupling between switchingdevice and conductor bar with con-ductor material aluminium
9.3 Screw couplings
The following elements must beused for all metal screw couplings:
• Screws and bolts:Grade > 8.8
• Nuts:Grade 8
26
9.4 Treatment of firmlyscrew-connectedcontact surfaces
Contact surfaces must be subjectedto preliminary treatment beforescrew-fastening.
1. Clean
– use a lint-free cloth,
– in case of severe contaminati-on: use detergent.
2. Polish to achieve a bright surface
(A) – use emery cloth (grain size 100 or finer)
– or use a steel brush which is only used forcopper
(B) – use emery cloth (grain size 100 or finer)
– or use a steel brush which is only used foraluminium
(C) remove any existing passiva-tion using a steel brush which is only used for steel.
3. Immediately after cleaning thematerial metallically bright, coat itwith lubricant KL so that the spa-ce between the contact surfacesis completely filled once thescrews have been fastened.
Material of contactsurfaces
Pre-treat-ment
Copper, silver-plated -
Copper A
Aluminium, silver-plated
-
Aluminium B
Steel or steel, galvanized
C
AREVA Sachsenwerk GmbH · Rathenaustraße 2 · D-93055 Regensburg · Postfach 10 01 55 · D-93001 RegensburgPhone +49 (0)9 41/46 20-0 · Fax +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 produce upto 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.
AR
EV
A S
ach
sen
we
rk G
mb
H R
eg
en
sbu
rg-
Vak
uum
-Lei
stun
gssc
halte
r VA
, VA
A, V
XC
- ©
- A
RE
VA -
200
5. A
RE
VA, t
he A
RE
VA lo
go a
nd a
ny a
ltern
ativ
e ve
rsio
n th
ereo
f are
tra
dem
arks
and
ser
vice
mar
ks o
f AR
EVA
The
othe
r na
mes
men
tione
d, r
egis
tere
d or
not
, are
the
pro
pert
y of
the
ir re
spec
tive
com
pani
es -
389
1919
82 R
CS
PA
RIS
- C
reat
ion:
WA
BIn
geni
eurd
iens
tleis
tung
s G
mbH
Bay
reut
h -
Prin
ted
in G
erm
any
AARREEVVAA TT&&DD
T&D Worldwide Contact Centre
www.areva-td.com