5-3
5.3 Megger test
When executing a megger test on the inverter remove all wires to R, S, T, PD, P, N, RB, U, V and W.
Do not use a megger or buzzer on the control circuit only use a digital multi-meter.
(Megger Voltage 500V DC)
Execute megger test of main circuit after the J61 connector has been removed. Short terminals of R, S,
T, PD, P, N, RB, U, V and W.
After the megger test is complete, reconnect the J61 connector as before.
5.4 Withstand Voltage test
Never perform withstand voltage test on the inverter.
The inverter main circuit uses semiconductors. Semiconductors can deteriorate when a withstand
voltage test is performed.
Chapter 5 Maintenance, Inspection
IM
R
S
T
U
V
P
PD
N
RB
J61
Earth terminal
Disconnect
power source.
Motor
Make sure the J61 connector is
removed before the Megger test is
done.
DC500V megger
Disconnect motor wires.
W
