ABB ACS320 - Electrical installation; Checking the insulation of the assembly

Electrical installation 45
6
Electrical installation
Contents of this chapter
The chapter tells how to check the insulation of the assembly and the compatibility
with IT (ungrounded) and corner grounded TN systems as well as connect power
cables, control cables and embedded fieldbus.
WARNING! Obey the safety instructions. See chapter Safety on page 15. If
you ignore the safety instructions, injury or death can occur. If you are not a
qualified electrician, do not do electrical work.
Make sure that the drive is disconnected from the input power during installation. If
the drive is already connected to the input power, wait for 5 minutes after
disconnecting the input power.
Checking the insulation of the assembly
 Drive
Do not make any voltage tolerance or insulation resistance tests (for example hi-pot
or megger) on any part of the drive as testing can damage the drive. Every drive has
been tested for insulation between the main circuit and the chassis at the factory.
Also, there are voltage-limiting circuits inside the drive which cut down the testing
voltage automatically.
 Input power cable
Check the insulation of the input power cable according to local regulations before
connecting to the drive.