Checks With Isu Supply Started; Parameters - ABB ACS 600 User Manual

Checks with ISU
Supply Started
WARNING! This section includes instructions for checking/measuring circuits under
voltage. Only a qualified person is allowed to do the work. An appropriate and
approved measuring instrument must be used.
IF IN DOUBT, DO NOT PROCEED!
1. Basic Checks
Check that the cooling fan in the supply section rotates
freely in the right direction, and the air flows upwards.
FLOATING NETWORK (IT NETWORK)
1. Earth Fault Protection Based on an Insulation Monitoring Device
Check the setting of Parameter 30.04 EXT EARTH FAULT,
and the connection to DI4.
Check the tuning of the insulation monitoring device for the
earth fault protection (Bender).
The insulation monitoring device is tuned at the factory. If
further tuning is required, see the IRDH265 Operating
Manual by Bender (code: TGH1249).
SYSTEM EARTHED NETWORK (TN NETWORK)
1. Earth Fault Protection Based on Internal Current Measurement
Check the setting of Parameter 30.02 EARTH FAULT.

Parameters

ACA 635 IBGT Supply Sections
Chapter 4 – Commissioning the Supply Section with ISU
This table is a list of checks to be done after the IGBT supply unit is
started and the DC busbars are live.
Action
The parameters of the ISU need not be set in a normal start-up
procedure or in normal use.
Information
A paper sheet set on the lower gratings
stays. Fan runs noiselessly.
This is an optional feature (IRDH265-x).
If included, see the circuit diagrams
delivered with the device. For
information on the protection principle
see the IRDH265 Operating Manual by
Bender (code: TGH1249) and
– Earth Fault Protection.
This is a programmable feature. For
information on the protection principle
see Chapter 5 – Earth Fault Protection
Chapter 5
4-7