ABB ACS580MV, Commissioning Manual

Page: 30 / 150

30 Standard Commissioning Process
13. Reverse all disconnections and remove the short circuit wires.
Overview of high voltage part short circuit wiring
You can also measure the insulation resistance of the transformer separately from the
drive. Please see
Preventive Maintenance .

Motor Insulation Test
The frame and the windings not being tested must be grounded during the insulation
resistance measurement.
All resistance temperature detectors (RTD) must be grounded.
The insulation resistance of a new motor is normally very high. A rule of a thumb can be
that if the measured value is one decade or more lower than the value measured in the
factory, check the winding for excess moisture or dirt. The test report contains the
insulation resistance value measured in the factory.
NOTICE A short-circuit in any part of the drive will lead to severe damage.
Therefore, check that all short-circuit leads have been removed before energizing the
drive.