Inovance MD290T45G/55P - Page 266

9. Maintenance and Inspection
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9.2.2 Insulation Test on Main Circuit
Note
Ɣ
Before measuring insulation resistance with megameter (500 VDC megameter
recommended), disconnect the main circuit from the AC drive.
Ɣ
Do not conduct the dielectric strength test. High voltage (> 500 V) test need not
be performed again because it has been completed before delivery.
Figure 10-1 Test insulation on the main circuit
R S
T
U
V
W
BR
P
+
-
500 VDC
Megameter
+
-
MD290
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Before test, remove the VDR screw, as shown in the following position.
VDR jumper screw
EMC jumper scew
1
2