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Can I use ATV process in installation with greater SCCR than max value of 50kA declared for ATV630...N4?

Published date: 04 December 2018

Whenever networt prospective current at the point of ATV installation is greater than the value of max prospective current defined in ATV catalog for dedicated drive, it is mandatory to add line choke.
 ATV630..N4 drives have max Isc of 50kA, so for you network with SCCR 80 or 100kA you have to use line choke. With line choke you can be sure that max Isc at ATV inputs will always be below 50kA, despite whatever high SCCR upstrem the line choke.

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