ABB ACS 6000 - Changing Clamp Diodes in 3;5 MVA Phase Modules; Required Tools and Accessories; Changing Procedure

ABB
Chapter 6 - Insulation Resistance Measurement
ACS 6000 Commissioning Manual
3BHS135824 ZAB E01Rev. D 33 (of 62)
2
5 4 3
7
8 In case a Braking Chopper Unit (BCU) is part of the drive, make a
short circuit between the output terminals of the external resistor.
6.2.4 ARU / INU Preparation
The following preparatory measures must be taken in an Inverter Unit
(INU). The same instructions apply to an Active Rectifier Unit (ARU), if
present in the line-up.
GU
GU
GU
GU
U-phase
V-phase
W-phase
u
u
v
w
DC_plus
DC_NP
DC_minus
Short circuit of phase outputs and DC link busbars is already made in
TEU.
1 Disconnect and isolate the high voltage measurement on the HVD
board (ADCVI board in older drive versions).