Vacon NX User Manual

Electrical cabling and connections vacon • 93
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
6
6.1.10 Cable and motor insulation checks
1.
Motor cable insulation checks
Disconnect the motor cable from terminals U, V and W of the AC 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.
2.
Mains cable insulation checks
Disconnect the mains cable from terminals L1, L2 and L3 of the AC 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…2 MΩ.
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 1000 V. The insulation
resistance must be at least 1…2 MΩ.

Vacon NX Specifications

General

Product Type	AC Drive
Control Method	Scalar Control
Enclosure	IP00, IP21
Communication	Ethernet
Safety	STO (Safe Torque Off)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Ambient Temperature Range	-10°C to +50°C (with derating above +40°C)
Cooling Method	Air-cooled, Liquid-cooled