ABB V-Contact VSC Series User Manual

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– Key lock on contactor racking-in - it is only possible to
activate the lock and free the key preventing contactor
racking-in with the contactor in the isolated position.
– Key lock with earthing switch open - this can only be
activated with the earthing switch open. The key can only
be removed with the electric lock activated.
– Key lock with earthing switch closed - this can only be
activated with the contactor in the isolated position and
with the earthing switch closed. The key can only be
removed with the lock activated.
– Preset for independent padlocks on the shutters and in the
closed and/or open position.
– Electric lock on racking-in and racking-out with the door
open(microswitchonthedoor)oftheenclosureconnected
in series with the locking electromagnet on the contactor
truck.
– Key lock on earthing truck racking-in - with the lock
activatedalltheoperationswiththecontactorarepossible,
but positioning the earthing truck in the isolated position
starting from the racked-out position is not allowed.
– Mechanical lock which prevents racking-out of the
connector of the auxiliaries when the contactor is racked-in
and during racking-in and racking-out.
– Electro-mechanical lock on de-energisation for the earthing
switch,whichwhenthereisnovoltagepreventsthe
earthing switch operations.
– Electro-mechanical lock on the compartment door.
5.6.2.3. VSC/PN and VSC/PNG withdrawable contactors
The VSC/PN contactors are used for rated voltages from 7.2
to12kV,ratedthermalcurrentsupto400Aandfaultlevels
upto1000MVA(withsuitableprotectionfusesinserieswith
thecontactor).Inthesameway,theVSC/PNGcontactor
is used for 7.2 kV rated voltage and 400 A rated thermal
current.
Both the VSC/PN and the VSC/PNG versions of contactors
consist of:
– a three-pole contactor with SCO or DCO operation
–afuseholdercompletewithterminalsforfuses(121).Inthe
upperparttherearestrikers1a,1band1c(fig.12-page
29) for activating the enclosure contacts for signalling the
connected/test/isolated position
–amechanicalopen/closedsignallingdevice(120)
– two pairs of auxiliary contacts signalling open/closed
– feeder able to operate in d.c. and a.c.
– a truck on which the base plate of the contactor is fixed
and the front protective screen by means of two supports.
Attherear,twopinsarepositionedonthesidewallsof
the truck for locking contactor racking-in with the earthing
switchopenontheenclosure,whereasthe45°slides
operate the segregation shutters of the medium voltage
fixed contacts of the enclosure. The crosspiece for hooking
the contactor onto the enclosure for truck operation is
mounted on the front of the truck
– thejaw-typeinputandoutputisolatingcontacts(122)
– the locks as per par. 5.6.2.4.
– threecurrent-limitingfuses(suppliedonrequest)withhigh
breakingcapacityconnectedinserieswiththecontactor,
with dimensions according to:
 •DIN43625Standardwithmaximumcartridgelengthe=
442mm(singlecartridge)
 •BS2692StandardwithmaximumfixingdistanceL=553
mm(singleand/ordoublecartridge)
– a mechanical operation counter which indicates the number
ofoperationscarriedoutbythecontactor(122)
– a manual emergency opening device even when energised
withmediumvoltage(125)
–adeviceforopeningwhenafuseblows,withrelativefuse
blown indication.
5.6.2.4. Description of the locks for VSC/PN and
VSC/PNG withdrawable contactors
– Electric lock which prevents the contactor being closed
whenthetruckisnotinthe“racked-in”(200mm),“test”
(47.5mm)and“racked-out”(0mm)positions(-BGT3)(fig.
12a).
– Mechanical lock which prevents the contactor being
racked-inandoutwhenitisclosed,andcontactorclosing
whenthetruckisnotinthe“racked-in”,“test”and“racked-
out”positions(1)(fig.12a).
– Electric lock which prevents contactor closing when a fuse
is missing or blown.
–Lockingelectromagnetonthecontactortruckwhich,when
thereisnovoltage,preventsracking-inorracking-out
(-RL2)(fig.12a).
– Mechanical lock which prevents contactor racking-in if the
enclosuredoorisnotclosed(requiresareciprocalinterlock
inthefixedpart)(126).
–Mechanicallockforthe“test”position(2)(fig.12a).
–Lockfordifferentcurrents(5)(fig.12a).
(*)Thislockconsistsofsomepinsassembledintheplugsoftheauxiliarycircuits
which,withasuitablecode,preventconnectionoftheplugintheenclosuresocket.
The lock also foresees compulsory application of the locking magnet in the truck.
NEPSI.COM - Northeast Power Systems. Inc.

ABB V-Contact VSC Series Specifications

General

Brand	ABB
Model	V-Contact VSC Series
Category	Industrial Electrical
Language	English