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38 Electrical installation
Measuring the insulation resistance of the brake resistor
circuit
WARNING!
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
electrical professional, do not do installation, commissioning or
maintenance work.
1.
Stop the drive and do the steps in section
before you start the work.
2.
Make sure that the resistor cable is connected to the resistor and disconnected
from the drive output terminals.
3.
At the drive end, connect the R+ and R- conductors of the resistor cable together.
Measure the insulation resistance between the conductors and the PE conductor
with a measuring voltage of 1000 V DC. The insulation resistance must be more
than 1 Mohm.
ohm
Electrical safety precautions (page 35)
1000 V DC,
> 1 Mohm
R+
R-
PE
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