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Sinamics BLM problem

Created by: Deep Bhatt at: 1/16/2012 10:02 AM (1 Replies)

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1/16/2012 10:02 AM	Rate (0)
Deep Bhatt Posts: 241 Rating: (50)	Hello Here is my problem..Need Help ASAP SINAMICS – BLM 250KW 6SL3330-1TH33-0AA0 Two BLM Modules are working in parallel and feeding to the common MOMO. However during starting of Motor one of the BLM is tripping on Overvoltage. Two nos. fuses have also blown. Identical scheme is already working at same site for Diff motor.
Deep Bhatt Posts: 241 Rating: (50)
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1/16/2012 9:17 PM	Rate (0)
Drives_Coach Posts: 133 Rating: (13)	Hello, More clarification of your system and problem would be helpful to provide you with input. Can you provide a single line diagram of your system. If you have two chassis BLM in parallel I would guess you have a 12 pulse configuration fed by a phase shift transformer possibly. Are both your BLM the same MFLB and do you have seperate reactors on them? Was this system previously running or is this a new installation. If the equipment was running troubleshooting tips would be completely different than a new system installation. Attachment Pages from IH1_Par.pdf (166 Downloads)
Drives_Coach Posts: 133 Rating: (13)	Last edited by: Drives_Coach at: 1/16/2012 10:06 PM
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