Checking The Insulation Of The Motor And Motor Cable - ABB ACS560 Quick Installation And Start-Up Manual

8 EN - Quick installation and start-up guide

Checking the insulation of the motor and motor cable

1. Stop the drive and do the steps in section Electrical safety precautions before you start
the work.
2. Check that the motor cable is disconnected from the drive output terminals U2, V2 and
W2.
EN
3. Measure the insulation resistance between the phase conductors and then between
each phase conductor and the Protective Earth conductor. Use a measuring voltage of
HI
1000 V DC. The insulation resistance of an ABB motor must exceed 100 Mohm
(reference value at 25 °C or 77 °F). For the insulation resistance of other motors, consult
the manufacturer's instructions.
Note:
Moisture inside the motor casing reduces the insulation resistance. If moisture is
suspected, dry the motor and repeat the measurement.
1000 V DC,
> 100 Mohm
Obey the safety instructions of the drive. If you ignore them, injury or death,
or damage to the equipment can occur.
If you are not a qualified electrician, do not do installation or maintenance
work.
ohm
ohm
U1
U1-V1, U1-W1, V1-W1
M
V1
3~
U1-PE, V1-PE, W1-PE
W1
PE