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

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M N S - MCC
LO W VO LTAG E M OTO R CO N T R O L C EN T ER
Circuit breakers, fusible disconnects, contactors,
relays and other components may have
documentation that describes operating
instructions that are not included in this manual.
Review any documentation provided with those
components prior to operating the MCC.
Fixed and modular fixed units
No special operating instructions are required for
fixed or Modular fixed units. However, the internal
components may have separate instructions. If
these individual manuals are not supplied,
contact your ABB representative.
Withdrawable units
These types of units allow you to remove or insert
it in its cubicle without interrupting power to the
MCC main bus.
This is possible through the combined action of
the operating handle position and unit physical
position.
Rotary operating handle
This handle has five positions: ON, TRIP, OFF, TEST
and MOVE.
Unit physical positions
Withdrawable units have four (4) physical positions:
• ENGAGED – Unit is full inserted and connected to
power.
• ISOLATED – Unit is moved approximately 30 mm
(1.2 in) out to the first detent, disconnected from
power.
• WITHDRAWN – Unit is moved almost entirely out
of the MCC, stopped by a mechanical latch on the
left rail of the unit.
• REMOVED – Unit is fully extracted from the MCC.
29) Defeater
30) Unit Side
Plate
5) Mechanical
Latching
8) Unit Input
Plug
7) Unit
Interlocking
Wheel
28) Operation
Rotary Handle
6) Pull Handles
21) Bottom Plate
—
60
—
60 Withdrawable unit
—
Operation