Explanation of Function
Seite 171 / 180
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 a withstand voltage test on the inverter.
The inverter main circuit uses semiconductors. Semiconductors can deteriorate when a withstand
voltage test is performed.
IM
R
S
T
U
V
W
P
PD N
RB
J61
Earth terminal
Power supply
Motor
Make sure the J61 connector is
removed before the Megger
test is done
DC500V megger
Don’t wire power
supply line.
Don’t wire to motor.
