ACB ACS880 protection

Hi Dear All

Does anyone know if using ACB is applicable for a 12-pulse ACS880-07 Drive protection? our customer ordered LSGI protections for that.

your helps is appreciated in advance.

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at66.sajjadi Rank: 1064

Asked 18 days ago

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Hi

ultra fast fuses are generally recommended to protect the power part of a drive.

If your customer has chosen to use a circuit breaker, it means that someone has verified the feasibility of this choice. If you also tell us the power of the drive, I can check if the manufacturer's protection tables allow it.

BR

Flavio

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by at66.sajjadi Rank: 1064 on 2/15/2021 11:31:56 PM | Like (0) | Report

Hi,
many thanks for your immediate help, Dear Flavio.
the drive type code is:
ACS880-07-1160A-7 + A004
1100 kW, 690 V

Thank you again

by Flavio Mussolin AKS expert

Rank: 4 on 2/16/2021 1:43:51 AM | Like (1) | Report

Hi

The size of the drive is important, and considering that in any case the semiconductors are protected by the internal fuses of the cabinet (version 07), the circuit breaker provided by your customer will only have to protect the power supply line. Let's hear if there are other opinions, but it still seems like a correct choice.

by at66.sajjadi Rank: 1064 on 2/16/2021 2:07:04 AM | Like (0) | Report

do you mean ACB or contactor in cabinet built drives used for upstream protection not for the drive protection?

by Flavio Mussolin AKS expert

Rank: 4 on 2/16/2021 3:07:29 AM | Like (1) | Report

Yes
the ACB for the protection of the power line supply of the cabinet drive. The automatic magnetothermic switch replaces the fuses in the line protection, up to the drive entry point. The protection of what is sensitive in the drive (the semiconductors) at this point is the responsibility of the fuses that are already installed in the drive cabinet.

by at66.sajjadi Rank: 1064 on 2/16/2021 3:37:53 AM | Like (0) | Report

thanks for your answers and excuse my numerous questions. but, if so, can we remove the ACB in drive cabinet and consider it between the drive and the transformer, separately ? I'm afraid, would you please recommend me the true solution? is it applicable? let me remind that this is a 12 pulse VFD.

by Flavio Mussolin AKS expert

Rank: 4 on 2/16/2021 4:11:03 AM | Like (0) | Report

IMHO no, but to get a correct solution on your application, if I were in your place I would go directly to the nearest ABB distributor, generally they are quite available to provide suggestions and advice for each type of application

by at66.sajjadi Rank: 1064 on 2/16/2021 4:16:01 AM | Like (0) | Report

thank you Dear Flavio.

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Flavio Mussolin AKS expert

Rank: 4

Answered 18 days ago

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ACB ACS880 protection

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