Specifies the performance requirements of directional relays and power relays with two input energizing quantities, which constitute a particular sub-family of measuring relays with more than one input energizing quantity as defined in I EC Publica
KSIEC60255-12:1980
Electrical relays-Part 12:Directional relays and power relays with two input energizing quantities .
Number of Pages:26
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Kes 3,605.00