ABB UniSec DY800, Инструкции по установке, обслуживанию и техническому обслуживанию

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11 D I S T R I B U T I O N S O LU T I O N S
5.5.1 Interlock between feeder disconnector SL
and earthing switch ST
This is a mechanical lock created by the reciprocal
rotation of the two operating shafts, which prevents
the operating lever from being inserted into the
corresponding lever seat if the conditions are not
correct.
Earthing switch ST can only be closed if feeder
disconnector SL is open.
Feeder disconnector SL can only be closed if
earthing switch ST is open.
5.4.2 Interlocks between the door and earthing
switch ST
This is a mechanical lock, one of the forcing type
that prevents the door from opening if the earthing
switch is open, while the other is the inhibiting type
that prevents the operating lever from being
inserted into the lever seat of the earthing switch,
closed when the door is open.
Inversely (inhibiting lock), the earthing switch
cannot be opened unless the door is closed and
locked with the handle.
5.5.3 Interlock between the lever seat of feeder
disconnector SL and the opening and closing
controls of circuit-breaker I
This is an electrical lock that inhibits the electrical
controls of circuit-breaker I when the operating lever
is in the lever seat of feeder disconnector SL.
Insertion of the operating lever acts on a micro-
switch which cuts off the power supplied to the
control circuits of circuit-breaker I.
5.5.4 Interlock between the lever seat of earthing
switch ST and the opening and closing controls of
circuit-breaker I
This is an electrical lock that inhibits the electrical
controls of circuit-breaker I when the operating lever
is in the lever seat of earthing switch ST. Insertion of
the operating lever acts on a micro-switch which
cuts off the power supplied to the control circuits of
circuit-breaker I.
5.5.5 Interlock between feeder disconnector SL
and circuit-breaker I
This is a mechanical lock of the inhibiting type that
prevents the operating lever of feeder disconnector
SL from being inserted into its seat if circuit-breaker
I is closed.
5.5.6 Electrical interlock between feeder
disconnector SL and circuit-breaker I
This is an electric lock that prevents circuit-breaker I
from closing when feeder disconnector SL is in the
open position (the circuit-breaker can always be
closed in the mechanical mode).
The position of the shaft of feeder disconnector SL
acts on a micro-switch which cuts off the power
supplied to the closing coil of the circuit-breaker,
thereby preventing it from functioning.
5.5.7 Electrical interlock between earthing switch
ST and circuit-breaker I
This is an electric lock that prevents circuit-breaker I
from closing when earthing switch ST is in the open
position (the circuit-breaker can always be closed in
the mechanical mode).
The position of the shaft of earthing switch ST acts
on a micro-switch which cuts off the power supplied
to the closing coil of the circuit-breaker, thereby
preventing it from functioning.
5.5.8 Door lock for thermovision
This is a key lock (responsibility key) which is not
part of the supply and which only allows authorized
persons to open the door.
5.5.9 Padlock on the lever seat of earthing switch ST
This system allows a padlock to be fitted onto the
operating shaft of earthing switch ST. When the
padlock is in place, the operating lever cannot fit
into the seat and earthing switch ST cannot be
opened.