scope:

This International Standard applies to a.c. circuit-breakers within the scope of IEC 60056. It provides the general rules for testing a.c. circuit-breakers, for making and breaking capacities over the range of test-duties described in 6.102 to 6.111 of IEC 60056, by synthetic methods.

NOTE Circuits for the test duties described in 6.111 have not yet been standardized. However, present methods are given in annex GG.

The methods and techniques described are those in general use. The purpose of this standard is to establish criteria for synthetic testing and for the proper evaluation of results. Such criteria will establish the validity of the test method without imposing restraints on innovation of test circuitry.