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94 Electrical installation
1.
Do the steps in section
work.
2.
Make sure that the motor cable is disconnected from the drive output terminals.
3.
Measure the insulation resistance between each phase conductor and the protective
earth conductor. Use a measuring voltage of 1000 V DC. The insulation resistance of
an ABB motor must be more than 100 Mohm (reference value at 25 °C [77 °F]). For
the insulation resistance of other motors, refer to the manufacturer's instructions.
Note: Moisture inside the motor reduces the insulation resistance. If you think that there
is moisture in the motor, dry the motor and do the measurement again.
1000 V DC,
ohm
> 100 Mohm
Measuring the insulation resistance of the input power cable
￭
Before you connect the input power cable to the drive, measure its insulation resistance
according to local regulations.
Electrical safety precautions (page 19)
V1
W1
before you start the
U1
U1-PE, V1-PE, W1-PE
M
3~
PE
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