Why neutral is not grounded in ACS 800 12 pulse drive
Dear Sir,
Please help me in letting to know that why neutral of star winding is not grounded in 12 pulse ACS800 multi drive system.
Please help me in letting to know that why neutral of star winding is not grounded in 12 pulse ACS800 multi drive system.
Asked 1 year ago
Answers
0
Hi,
It is clearly indicated in the manual:
It is clearly indicated in the manual:
"The secondaries of the transformer must not be grounded"
In order to use 12-pulse operation, you need 2 secondary windings - delta and star, each connected to own rectifier bridge in DSU module - look the diagram on page 84. So in this case, no way to ground your star secondary winding.
Of course, you can use the transformer with only one secondary winding, but you will have 6-pulse operation mode in that case.
Another note in the manual explains that you have to disconnect EMC filter option +E202, if installed, for use in IT networks (ungrounded).
Source: ACS800-07 Hardware manual
by rajattyagi340 Rank: 383 on 6/24/2019 4:10:33 AM | Like (0) | Report
Dear sir
Can you tell me exact problem which are you facing??
by manoj_ramnani Rank: 2354 on 6/24/2019 4:29:12 AM | Like (0) | Report
Dear Sir,
Right now I am not facing any problem I just wanted to know it out of curiosity.
The other problem which we are facing is our varistor boards are getting blown whenever a motor gets ground in multidrive system
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