“WARNING” Power off the unit, waiting a minimum 3 minutes before removing any applicable wiring. Ensure to
measure that the DC voltage has discharged sufficiently before carrying out the below testing.
Measure the resistance of the points shown in the following table using a circuit tester.
P, N, U, V and W are the terminal No. shown in the above drawing.
Tester (+) Tester (-) Result using Multimeter
(Red) (Black) (Resistance)
P N OL / Several 10MΩ
N P Several MΩ
P U OL / Several 10MΩ
P V OL / Several 10MΩ
P W OL / Several 10MΩ
N U Several 100kΩ
N V Several 100kΩ
N W Several 100kΩ
U P Several 100kΩ
V P Several 100kΩ
W P Several 100kΩ
U N OL / Several 10MΩ
V N OL / Several 10MΩ
W N OL / Several 10MΩ
<Judgement>
If the resistance is 0- a few kOhms there is a possibility that the elements are damaged
so replace the power transistor.
Test Procedure – 3 PH Transistor Module
To Next Page
Loading...
Need help?
General
