Measuring The Cable And Motor Insulation; Insulation Checks Of The Motor Cable; Insulation Checks Of The Mains Cable - Danfoss VACON NXP IP00 Operating Manual

Drive modules
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VACON® NXP IP00 Drive Modules
Operating Guide
4.
Make sure to select the mains cable, the brake cable, and the motor cable correctly.
For information on cable selections, see:
-
6.1.3 Cable Selection and Dimensioning
-
6.1 Cable Connections
-
6.2 EMC-compliant Installation
5.
Make sure that the control cables are sufficiently far from the power cables. See
stallation.
6.
Make sure that the shields of the shielded cables are connected to a grounding terminal that is identified with the ground-
ing symbol.
7.
Do a check of the tightening torques of all the terminals.
8.
Make sure that no power correction capacitors are connected to the motor cable.
9.
Make sure that the cables do not touch the electrical components of the drive.
10.
Make sure that the common input +24 V is connected to an external power source and the ground of the digital input is
connected to ground of the control terminal.
11.
Do a check of the quality and quantity of the cooling air.
For further information on cooling requirements, see:
-
5.2 Cooling Requirements
-
12.10 VACON® NXP IP00 Drive Modules Technical Data
12.
Make sure that there is no condensation on the surfaces of the AC drive.
13.
Make sure that there are no unwanted objects in the installation space.
14.
Before connecting the drive to mains, do a check of the installation and the condition of all the fuses (see
Fuse
Sizes) and other protective devices.

9.3 Measuring the Cable and Motor Insulation

Do these checks if necessary.
NOTE! AC drive is already measured at the factory.
The insulation checks of the motor cable, see
The insulation checks of the mains cable, see
The insulation checks of the motor, see

9.3.1 Insulation Checks of the Motor Cable

Use these instructions to check the insulation of the motor cable.
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 Mains Cable

Use these instructions to check the insulation of the mains cable.
Procedure
1.
Disconnect the mains cable from the terminals L1, L2, and L3 and from mains.
2.
Measure the insulation resistance of the mains 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).
110 | Danfoss A/S © 2023.09
and related tables
9.3.1 Insulation Checks of the Motor Cable
9.3.2 Insulation Checks of the Mains Cable
9.3.3 Insulation Checks of the Motor
Commissioning
6.7.1 Additional Instructions for Cable In-
12.4 Cable and
AQ351737303996en-000201 / DPD00888

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