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Description / Abstract:
This standard applies to all indoor and outdoor types of ac
high-voltage circuit breakers rated above 1000 V and rated on a
symmetrical current basis.
Purpose
Inconsistency in application of preferred ratings of
high-voltage circuit breakers may result in wrong application of
interrupting current and voltage levels.
The recommendations outlined in the following clauses are
intended to provide consistent functionality for high-voltage
circuit breakers rated above 1000 V.