Withstand Voltage Test - Mitsubishi Electric FR-A872-P Instruction Manual

NOTE
• Before performing the insulation resistance test on the external circuit, disconnect the cables from all terminals of the inverter
and the converter unit so that the test voltage is not applied to the inverter and the converter unit.
• For the continuity test of the control circuit, use a tester for high resistance range and do not use the megger or buzzer.
Power
supply
500 VDC
megger
5.2.8

Withstand voltage test

Do not conduct a withstand voltage test. Deterioration may occur.
R/L1
P/+
Converter
S/L2 N/-
unit
T/L3
Earth (ground) terminal
P/+
U
Inverter
N/- V
W
Earth (ground) terminal
5. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
5.2 Measurement of main circuit voltages, currents, and powers
Motor
IM
500 VDC
megger
113
1
2
3
4
5
6
7
8
9
10