DS/IEC 56-4
High-voltage alternating-current circuit-breakers - Par t 4: Type tests and routine tests with Amendment No. 1 (1975 ) , Amendment No. 2 (1977)
inactive
| Organization: | DS |
| Status: | inactive |
scope:
Type tests and routine tests
Document History
DS/IEC 56-4
High-voltage alternating-current circuit-breakers - Par t 4: Type tests and routine tests with Amendment No. 1 (1975 ) , Amendment No. 2 (1977)
Type tests and routine tests
First supplement to Publication 56-4 (1971) High-voltage alternating-current circuit-breakers - Part 4: Type tests a nd routine tests - Appendix E - Methods of determining prosp ective transient recovery voltage waves
The standard applies to a.c. circuit-breckers designed for m aking and breaking short circuit current at voltages of 1000 V and above