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133
Transistor Tests
Testing the rectifier, input circuit measurement
The input and output circuits of the inverter can be checked externally with the inverter
power off and the motor leads disconnected by use of a multi-meter set to
diode check
.
Note: Different drive housings will have different readings. Measured values per
housing are given in tables below.
5.7. Transistor Tests
i
The inverter power must be de-energized and locked out for these tests! Disconnect
the mains wiring, motor wiring, and braking resistor from the inverter before taking
measurements.
Positive Side
Negative lead of meter to positive DC terminal.
Positive lead of meter to L1/L2/L3 terminals.
E, G, and H Housings
Measurement
To
Value
Measurement
To
Value
+
Terminal
L1
0.4 - 0.5
- Terminal
L1
0.4 - 0.5
+ Terminal
L2
0.4 - 0.5
- Terminal
L2
0.4 - 0.5
+ Terminal
L3
0.4 - 0.5
- Terminal
L3
0.4 - 0.5
R, U, and W Housings
Measurement
To
Value
Measurement To
Value
+ Terminal
L1
0.4 - 0.5
- Terminal
L1
0.4
+ Terminal
L2
Open
- Terminal
L2
0.4
+ Terminal
L3
Open
- Terminal
L3
0.4
Negative Side
Positive lead of meter to negative DC terminal.
Negative lead of meter to L1/L2/L3 terminals.
Multimeter
Multimeter
+
+
+
-
+
- - -
Содержание COMBIVERT F5
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