9. Inspection and Replacement
9-8
9.8 How to Check at Diode Module & IGBT Inspection
1. Remove the power source wire (R, S, T) and the motor output wire (U, V, W)
connected from the outside
2. Check and determine whether R, S, T, U, V, W, B1 (or P/L1), N of the inverter
terminal block are turned on or not by changing the polarity of the tester between
each other.
3. Perform the test after making sure that the electrolytic condenser is discharged.
4. When they are not turned on, they will indicate several mega resistance values. It
may indicate several mega resistance values when it is turned on for a moment
owing to the influence of electrolytic condenser. When they are turned on, it indicates
several Ω ~ dozens of Ω. The indicator value varies depending on the type of module,
the type of tester, etc., but such values are shown in a similar range when it is sound
product.
Содержание LSLV-iV5 Series
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