Electrical Connections
81
Figure 64 Disconnecting EMC filter for operation with Delta-connected power size C & D inverters
Remove EMC Filter for Delta-Connected Power for Type 2 inverters
The EMC filter on the VSD must be disconnected if the Liebert VSD control DS unit will be operated
with Delta-connected power.
1. Disconnect the power supply before working on the unit.
2. Locate the VSD (refer to
Figure 1
for the drive’s location on downflow units; see
Figure 2
for the
location on upflow units).
3. Remove inverter assembly. Follow instructions in
13.2.4 - Electronic Variable Speed Drive -
Inverter
.
4. Loosen and remove the screws as shown (#1 in
Figure 65
) and (#2 in
Figure 65
).
5. Remove filter (#3 in
Figure 65
).
6. Reinsert and tighten the screws removed in
Step 4
.
Figure 65 Figure bb Disconnecting EMC filter for operation with Delta-connected power Type 2 inverters
NOTE
This procedure requires substantial work.
A
B
Tab fully inserted:
EMC filter fitted
Tab fully extended:
EMC filter disconnected
DPN001946
Rev. 0
Internal
EMC filter
Internal
EMC filter
1
2
4
3
DPN001947
Rev. 0
Summary of Contents for Liebert DS Series
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