J. T. Eaton LCX9000 User Manual download pdf (Page 57)

LCX9000 Liquid-Cooled Drives User Manual

MN04005001E

For more information visit: www.EatonElectrical.com 3-11

January 2007

Cable and Motor Insulation Checks

1. Motor cable insulation checks

Disconnect the motor cable from terminals U, V and W of the drive and from the motor.

Measure the insulation resistance of the motor cable between each phase conductor as

well as between each phase conductor and the protective ground conductor.

The insulation resistance must be at least 1 – 2MΩ.

2. Mains cable insulation checks

Disconnect the mains cable from terminals L1, L2 and L3 of the drive and from the

mains. Measure the insulation resistance of the mains cable between each phase

conductor as well as between each phase conductor and the protective ground

conductor.

The insulation resistance must be at least 1 – 2MΩ.

3. Motor insulation checks

Disconnect the motor cable from the motor and open the bridging connections in the

motor connection box. Measure the insulation resistance of each motor winding. The

measurement voltage must equal at least the motor nominal voltage but not exceed

1000V. The insulation resistance must be at least 1 – 2MΩ.

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 127 128

No comments

J. T. Eaton LCX9000 User Manual Page 57