90
4.5
How to Check Power Components
Before checking the power components, be sure to disconnect AC Input supply and wait
until the Main Electrolytic Capacitors (DCP-DCN) is discharged.
•
Turn the power off and disconnect RST/UVW wiring.
•
Determine whether inverter terminals ((R,S,T, U, V, W, P1 (or P2), N)) are energized
or not using a tester.
•
Wait until the Main Electrolytic Capacitors (DCP-DCN) is discharged to a safe level.
•
Mega ohoms will be displayed when the circuit is open. When closed, the resistance
value ranges from a few ohms to tens of Ω.
•
The displayed value is not always the same according to modules and tester types
but should be similar.
•
Modules number and checking point
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