ABB V-Contact VSC Series Installation And Service Instructions Manual page 28

1
4
5
6
2
Caption to the key locks of the earthing switch
7 lock with earthing switch open
8 lock with earthing switch closed
9 lock on contactor racking-in.
Fig. 14
26
Check that the feeder compartment
!
door (2) is locked.
– close the shutter of the operating seat of the
ST turning the actuator (10) clockwise. This
operation releases the contactor and a pre-
vention lock against insertion of the operat-
ing lever into the earthing switch is activated;
– check that the locking magnet on the contac-
tor truck (if provided) is supplied with power
and check that the key lock on racking-in (if
provided) is de-activated;
– fully insert the truck racking-in lever (3) (fig.
15) in the corresponding coupling (5) and turn
it clockwise until the contactor is completely
racked-in;
– through the inspection window (4) check that
the contactor is racked-in.
b) Racking-out operation (only with contac-
tor open)
(1) Passing from the "racked-in" position to the
"isolated for test" position (with contactor
open) (fig. 14)
9 7
8
– through the inspection window (4) check that
the contactor is open (indicator in position
"O");
– fully insert the racking-in/out lever of the truck
(3) fig. 15 in the corresponding coupling (5)
and turn it anti-clockwise until the contactor
stops;
– open the shutter of the ST operating seat by
turning the actuator (10) anti-clockwise;
– insert the operating lever (13) in the seat of
the earthing switch, making the protrusion
(12) coincide with one of the two slots (11);
– close the earthing switch by turning the op-
erating lever clockwise;
– remove the operating lever (13) from the
earthing switch seat;
– check that the position indicator of the earth-
ing switch indicates that it is closed "I" on the
operating seat (14 - fig. 14a) and through the
inspection window (6);
– open the contactor compartment door (1) by
pulling the handle upwards.
10 11
11
Fig. 14a
13
12
14