ABB V-Contact VSC7/P

33
A
B
1
1
For the withdrawable VSC/P contactors placed in UniGear
ZS1 switchgear or PowerCube modules and for the
withdrawable VSC/PN and VSC/PNG contactors in UniGear
MCCswitchgear,carryouttheemergencyoperationwith
thecompartmentdoorclosed.Tocarryouttheoperation,
work towards the opening on the compartment door using
thespecialtoolprovided,fittedontheendwithan8mm
hexagonal spanner. Apply a torque of 5 N with an operating
angle of about 30° clockwise. The point to operate in is
shown by the special plate located on the contactor shield
(seedetail1-fig.14band14c).
For fixed contactors, if the operations
are carried out with the medium voltage
protection “B” removed, pay great attention
to the moving parts.
For withdrawable contactors, do not remove
the front shield to carry out the emergency
opening operation.
In any case, if auxiliary voltage is present,
take special care not to remove the
protective shield of the stored energy
capacitor and not to touch the capacitor
itself in any way.
5.8. Emergency opening operation
The contactor is fitted with manual
emergency operation which must be carried
out by suitably qualified personnel with in-
depth knowledge of the apparatus.
The following Standards must be taken into
particular consideration during installation
and service:
– IEC 62271-1/DIN VDE 0101
– VDE 0105: Operation of electrical plants
– DIN VDE 0141: Earthing systems for
electrical installations with rated voltage
higher than 1 kV
– All the accident prevention regulations, in
force in the relative countries.
Tomanuallyopenthecontactor,itisnecessarytoworkon
operatingpartA,consistingofa8mmhexagonal-headbolt,
working clockwise with a torque of about 5 Nm and at an
angleofabout30°(seefig.14a).
Ifthecontactor(inthefixedversion)isplacedinsidethe
switchgear,itisnecessarytouseatransmissionmade
ofinsulatingmaterialofsuitablelength,whichallowssafe
operation. The transmission device is to be provided by the
customer.
Fig. 14a Fig. 14b Fig. 14c
NEPSI.COM - Northeast Power Systems. Inc.