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
• Depending upon module design; one or two
power cable connection units may be removed
(fig. 46). When necessary; exchange the power
cable connection unit (CCU40 or CCU300).
Depending upon current or application, two
power cable connection units have to remain or
must be exchanged.
Reassembly
• Connect control wiring and power cables
and install its protective cover (item 10).
• Insert new withdrawable unit size 36E. Should
new material be required, contact the nearest
ABB sales office or representative.
To convert one 36E height (900 mm / 35.4 in)
compartments to three 12E height compartment
follow this procedure:
Disassembly
• Pull out the existing withdrawable unit.
• If required exchange power cables or leave to
be used by one of the units size 12E.
• Disconnect control wiring or leave to be used
by one of the three units size 12E.
• The compartment bottom plate with the guide
rail and the top compartment bottom plate will
remain unchanged.
Reassembly
• Insert two new compartment bottom plates (item
21) with a distance of 12E each and attached them
using their studs and screws (items 26 & 24).
• The newly installed bottom plates must be
equipped with the left guide rail, and the rollers
and covers have to be mounted (items 22 & 20 of
fig. 43).
• Mount one control terminal block support (item
16) with one or two 12-pole terminal blocks above
each of the newly installed compartment bottom
plates on the right-hand side (in the cable
compartment) (item 13). If only one, 12-pole
terminal block per support is required, it must be
mounted in the upper part of the cut-out of the
support.
• Install new power cable connection unit (CCU40
or CCU300) (item 11).
• Connect power cables and control wiring.
• Insert three, new withdrawable units size 12E.
Should new material be required, contact the
nearest ABB sales office or representative.
The Sections should preferably be erected on a
base frame which is:
• Embedded in the concrete floor or
• Resting as a false floor on supports
Attach the MCC sections using two or four (as per
supplied drawings) bolts through the holes in the
section base to the floor or base frame. Use M8
(5/16 in) or larger hardware.
—
Table 4. Fastening sections to a floor, base frame and wall
A
Distance
between
350 mm (14 In) 400 mm (16 In) 500 mm (20 In) 600 mm (24 In) 700 mm (28 In) 800 mm (32 In) 1000 mm (40 In)
B
Width
Section
500 mm (20 In) 600 mm (24 In) 700 mm (28 In) 800 mm (32 In) 900 mm (36 In) 1000 mm (40 In) 1200 mm (48 In)
—
50
—
51
—
50 Mounting
dimension (table)
—
51 Reinforcement only
applies for the seismic
and ARC configurations
4
0
0 m
m
A
B
50
0 m
m