Over deze norm
Specifies the performance requirements of electrically biased (percentage) differential relays as well as methods of presenting the characteristics and performance of these relays. Applies to relays in a new condition designed for the detection of faults particularly in a.c. generators, motors and transformers. All tests are type tests. Does not apply to relays designed for busbar protection, nor applies to current differentialrelays used for the protection of transmission lines.
|Engelse titel||Electrical relays - Part 13: Biased (percentage) differential relays|