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What is the dc component for the HV circuit breakers ?

Published date: 26 November 2018

The dc component for the ranges of circuit breakers Evolis, EasyPact EXE, LF and SF is 30%.
This value is in accordance with the IEC 62271-100.
The time constante is 45 ms.

Some short-circuit breaking and making tests have been performed with a dc component higher than 30% but only for LF2 and LF3.
The values are mentioned in the respective catalog

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