Danfoss VACON NX FI4, Руководство по эксплуатации

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Procedure
1. Disconnect the motor cable from the terminals U, V, and W and from the motor.
2. Measure the insulation resistance of the motor cable between phase conductors 1 and 2, between phase conductors 1 and 3, and
between phase conductors 2 and 3.
3. Measure the insulation resistance between each phase conductor and the grounding conductor.
4. The insulation resistance must be >1 MΩ at the ambient temperature of 20 °C (68 °F).
9.3.2 Insulation Checks of the DC Supply Cable
Context:
Use these instructions to check the insulation of the DC supply cable.
Procedure
1.
Disconnect the DC supply cable from terminals B- and B+ of the inverter and from DC supply.
2.
Measure the insulation resistance between each phase conductor and the grounding conductor.
3. The insulation resistance must be >1 MΩ at the ambient temperature of 20 °C (68 °F).
9.3.3 Insulation Checks of the Motor
Context:
Use these instructions to check the insulation of the motor.
NOTICE
Obey the instructions of the motor manufacturer.
Procedure
1. Disconnect the motor cable from the motor.
2.
Open the bridging connections in the motor connection box.
3.
Measure the insulation resistance of each motor winding. The voltage must be the same or higher than the motor nominal voltage,
but at least 1000 V.
4. The insulation resistance must be >1 MΩ at the ambient temperature of 20 °C (68 °F).
5. Connect the motor cables to the motor.
6. Do the final insulation check on the drive side. Put all phases together and measure to the ground.
7.
Connect the motor cables to the drive.
9.4 Checks after Commissioning
9.4.1 Testing the Inverter after Commissioning
Context:
Before starting the motor, do these checks.
Commissioning Operating Guide | VACON® NX Inverters FI4-FI8
AQ299433367205en-000101 / DPD00908| 101
Danfoss A/S © 2019.07