Reliance electric GV3000 Instructions Manual page 91

Troubleshooting the Drive
200–400 HP Drives (with the motor connected)
Meter
IGBT Connection
No. (+) (-)
All U/T3 *
IGBTs
* U/T3
tested in
U/T3 **
parallel
* U/T3
* (+) DC Bus power terminal
** (-) DC Bus power terminal
200–400 HP Drives (with the motor disconnected)
Meter
IGBT Connection
No. (+) (-)
1 * W/T1
2 * V/T2
3 * U/T3
4 W/T1 **
5 V/T2 **
6 U/T3 **
* (+) DC Bus power terminal
** (-) DC Bus power terminal
Table 9.1 - Resistance Checks (Continued)
Component is OK if
resistance (R) is:
10 < R < 1 Megohm
Component is OK if
resistance (R) is:
10 < R < 1 Megohm
Component is defective if:
Continuity (short circuit) or
open when the meter is
connected with reversed
polarity
Component is defective if:
Continuity (short circuit) or
open when the meter is
connected with reversed
polarity
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