标准摘要
Specifies the appropriate methods of test, selected from the generic specification to be used in detail specifications for electromechanical all-or-nothing relays of assessed quality derived from this specification. Also gives the basic test schedules which are to be used in the preparation of such detail specifications.
英文名称Electrical relays. Part 19: Sectional specification: Electromechanical all-or-nothing relays of assessed quality