ABB MNS-MCC, Инструкция по установке, эксплуатации и обслуживанию

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37 I N S TA L L AT I O N , O P ER AT I O N S A N D M A I N T EN A N C E M A N UA L
*Only, where provided
Units status
The table below shows the Unit Status based on the
rotary handle position and physical location of the
unit.
Operating
Handle
Position
Unit
Physical
Position
Unit
Status Comments
ON Engaged On
Unit‘s main disconnect and control
circuits are closed.
OFF
(Lockable
with up to
3 padlocks)
Engaged Off
Unit‘s main disconnect and internal
control circuits are off. External control
power will remain connected.
Isolated Off
Unit in this status will have both the
power and the control circuits physically
disengaged from their sockets. The
drawer will be 30mm drawn out of the
cubicle and is locked (Cannot be
inserted nor removed).
Withdrawn Withdrawn
Unit can be removed outside the MCC
(A safety mechanical latch must be defeated).
TRIP Engaged Tripped
Unit‘s main breaker tripped after a fault.
The trip can be reset by moving the
handle to the OFF position.
TEST*
(Lockable
with up to
3 padlocks)
Engaged Test
Unit‘s main disconnect is OFF. Unit‘s
control circuitry is energized via an
auxiliary control power. The user can
conduct a functionality check test.
MOVE
Engaged
Ready to
change
Position
Unit‘s main disconnect is OFF. Drawer
holding mechanism is unlocked. The unit
is ready to be moved to the Isolated status.
Isolated
Ready to
change
Position
Drawer holding mechanism is unlocked. The unit
is ready to be moved to the Withdrawn position
or return to the Engaged position.