BS EN 60947-6-1:1992 Specification for low-voltage switchgear and controlgear. Multiple function equipment - Automatic transfer switching equipment
Withdrawn
Characteristics, conditions for operation and dielectric properties, tests and marking requirements for automatic transfer switching equipment for use in emergency power systems with interruption of the supply to the load during transfer for rated voltage not exceeding 1000 V a.c. or 1500 V d.c. and for use with or without enclosures.