Electrical Installation; What This Chapter Contains; Checking The Insulation Of The Assembly; Regen Supply Module And Wfu-Xx Regen Filter Module - ABB ACSM1 Hardware Manual

Electrical installation

What this chapter contains

This chapter describes the electrical installation procedure of the regen supply
module.
WARNING! The work described in this chapter may only be carried out by a qualified
electrician. Follow the
the safety instructions can cause injury or death.
Make sure that the regen supply module is disconnected from the supply (input
power) during installation. If the regen supply module is already connected to the
supply, wait for 5 minutes after disconnecting the input power.

Checking the insulation of the assembly

Regen supply module and WFU-xx regen filter module

Do not make any voltage tolerance or insulation resistance tests (e.g. hi-pot or
megger) on any part of the regen supply module or filter unit as testing can damage
them. Every module has been tested for insulation between the main circuit and the
chassis at the factory. Also, there are voltage-limiting circuits inside the regen supply
module which cut down the testing voltage automatically.

Supply cable

Check the insulation of the supply (input) cable according to local regulations before
connecting to the regen supply module.

Braking resistor assembly

Check the insulation of the braking resistor assembly (if present) as follows:
1. Check that the resistor cable is connected to the resistor, and disconnected from
the regen supply module output terminals R+ and R-.
2. At the regen supply module end, connect the R+ and R- conductors of the resistor
cable together. Measure the insulation resistance between the combined
conductors and the PE conductor by using a measuring voltage of 1 kV DC. The
insulation resistance must be higher than 1 Mohm.
ohm
Safety instructions
R+
R-
PE
on the first pages of this manual. Ignoring
47
Electrical installation