7.3.19.2 690 V AC Power Size
1
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3
4
5
6
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8
9
130BC582.10
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Figure 7.9 DC Capacitors, 690 V example
1 Balance/High frequency card 7 DC center plate 1
2 Capacitor bank cover
8 Capacitor locking panel
3 (-) DC plate
9 DC capacitors
4 Plastic alignment cap
10 DC center plate 2
5 (+) DC plate
11 Mylar insulator
6 Mylar insulator
Table 7.9 Legend to
1.
Remove the gate drive card in accordance with
chapter 7.3.14 IGBT Gate Drive Card
.
2.
Remove the balance/high frequency card in
accordance with
.
3.
Remove the Mylar cover from the capacitor bank.
4.
Remove the round bus bar support bracket by
removing three screws (T30).
5.
Remove one screw (T25 thread-forming) from
each IGBT output bus bar, one bus bar per IGBT
module.
6.
Remove the IGBT bus bar by removing two
screws (T30) from each IGBT output bus bar, one
bus bar per IGBT module.
7.
Remove the snubber capacitor, one from each
IGBT module by removing two screws (T30),
mounting the capacitor to the IGBT module.
8.
Remove the (-) DC plate by removing:
•
Three screws (T20 thread-forming) next
to the IGBT modules
•
One standoff (0.3 in [8 mm]) from the
negative terminal of capacitor 1
•
One screw (T25) from negative terminal
of capacitor 3
•
One round plastic alignment cap
9.
Remove the Mylar insulator between the (-) DC
plate and the (+) DC plate. The screws
connecting one of the two DC center plates may
have to be removed to remove the insulator.
10.
Remove the (+) DC plate by removing three
screws (T20 thread-forming) next to the IGBT
modules and two screws (T25) connecting the
plate to the positive terminals of capacitors 5 and
6.
11.
Remove the small Mylar insulator between the (+)
DC plate and one of the DC center plates. The
screws connecting one of the two DC center
plates may have to be removed to remove the
insulator.
12.
Remove DC center plate 1 by removing one
standoff (0.3 in [8 mm]) from the positive
terminal of capacitor 4 and three screws (T25)
from the positive terminal of capacitor 2 and
negative terminals of capacitors 5 and 6.
13.
Remove DC center plate 2 by removing one
standoff (0.3 in [8 mm]) from the positive
terminal of capacitor 3 and three screws (T25)
from the positive terminal of capacitor 1 and the
negative terminals of capacitors 2 and 4.
14.
Remove the capacitor locking panel by removing
six screws (T25 thread-forming).
Reinstall in reverse order of this procedure and tighten
hardware according to
.
Disassembly and Assembly In...
Service Manual
MG94A222
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
101
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Summary of Contents for VLT FC 103
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