ACS800 drive IGBT and AINT card blast

We are using 2 ISU drive as rectifier and used in crane application.During operation one ISU drive tripped on short cicuit and after reset it worked for 5mints and then suddenly a heavy sound heard and DC fuses blown off.After dismantling drive found AINT card and IGBT blasted.We replaced the same with new one but during operation again it blasted.
finally removed the faulty drive from panel and made the crane operational with single ISU drive at reduced speed.Please inform the root cause of the fault.

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yharikesh2007 Rank: 4616

Asked 4 months ago

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Hi

The causes of the failure you described in a multidrive system can be different and any suggestions could be misleading to solve the failure.
I suggest you contact the ABB Service closest to your area, who will be able to help you adequately

BR

Flavio

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