BS 142-4-4.1:1984废止
Electrical protection relays. Requirements for multi-input energizing quantity relays. Specification for biased (percentage) differential relays
出版：British Standards Institution
专家解读视频
Specifies the performance requirements for the relays and the parameters whose values are to be declared by the manufacturer. Recommends methods of presenting the characteristics and performance of these relays. Applies to relays designed to detect faults, particularly in a.c. generators, motors and transformers. Does not apply to relays designed for busbar protection or to current differential relays.
© British Standards Institution 2013
General notes:
At withdrawal it was suggested that users should refer to IEC standards where appropriate.
IEC 60255-13 Ed. 1.0 - Similar
