IEC 60949:1988

November 1988

International standard Current

Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects

The approach set out in this standard is to: a) calculate the adiabatic short-circuit current, b) calculate a modifying factor that takes account of the non-adiabatic heating effect, c) multiply a) and b) to obtain permissible short-circuit current.

Main informations

Collections

International IEC standards

Publication date

November 1988

Number of pages

25 p.

Reference

IEC 60949:1988

Print number

1 - 13/06/2005

Sumary

Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects

The approach set out in this standard is to: a) calculate the adiabatic short-circuit current, b) calculate a modifying factor that takes account of the non-adiabatic heating effect, c) multiply a) and b) to obtain permissible short-circuit current.

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