ABB V-Contact VSC Series

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Degree of protection
Limitedtothefrontpart,theABBenclosuresguaranteethe
following degree of protection:
• IP30ontheexternalhousing;
• IP20insidetheswitchgearwiththedooropen.
Special versions up to IP41.
The enclosure alone supplied by ABB cannot
guarantee the degree of protection of the
switchgear designed by the customer. It
must undergo the tests according to the
prescription indicated in the IEC62271-200
Standards.
Heating
Refer to technical catalogue 1VCP000165 for the rated
capacityofthecontactors,bearinginmindthatapparatus
heating is affected by the following variables:
•layoutoftheenclosuresintheswitchgeardesignedbythe
customer;
•degreeofprotection(ventilationslats);
•currentdensityofthepowersupplybusbars(busbarduct-
branches);
•ambienttemperature.
Foranyneeds,pleasecontactABBService.
5.6.2.1. Withdrawable VSC/P contactors
The contactors are used for rated voltages from 7.2 to 12
kV,ratednormalcurrentsupto400Aandfaultlevelsupto
1000MVA(withsuitableprotectionfusesinserieswiththe
contactor).
The VSC/P contactor is made up of:
– a three-pole contactor with SCO or DCO function
– mechanical signalling of open/closed
– two pairs of auxiliary contacts signalling open/closed
– feeder able to operate in DC and AC
– a truck on which the supporting structure of the contactor
isfixed,consistingoftwosupports,closedatthefrontby
the protection with characteristics nameplate.
In the top part of the protection there are strikers 30a and
30b(fig.11)foractuatingtheenclosurecontactstosignal
the connected/isolated position.
Thepin(34)forlockingcontactorracking-inwiththe
earthingswitchclosedontheenclosure,comesoutonthe
right side of the truck.
The crosspiece for hooking up the contactor to the
enclosure for operation of the truck is mounted on the front
ofthetruck(3);
–twosupports(102)housetheslideforactuationofthe
segregation shutters of the fixed medium voltage contacts
of the enclosure and the locking slide of operation of the
switch itself with the contactor in the connected position
or during the isolation stage;
– when it is not inserted in the socket located on the
enclosure,theplugconnectorfortheauxiliarycircuitsof
thecontactormustbehookeduptothepin(101);
–mechanicalsignallingofopen/closed(103);
–fuseholdercompletewithconnectionsforfuses(104);
– inputandoutputtulipisolatingcontacts(105);
– locks as per par. 5.6.2.2.;
–threecurrent-limitingfuses(suppliedonrequest)withhigh
breakingcapacityconnectedinseriestothecontactor,
with dimensions according to:
 •DIN43625Standardwithmaximumcartridgelengthe=
442 mm;
 •BS2692Standardwithmaximumcentrefixingdistance
L = 553 mm;
– animpulsecounter(suppliedonrequest)whichindicates
the number of operations carried out by the contactor
(106);
– manualemergencyopeningdevice(107)
– device for opening when a fuse blows.
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