IEC-255-12 › Electrical relays - Part 12: Directional relays and power relays with two input energizing quantities
IEC-255-12
-
1ST EDITION
-
CURRENT
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Specifies performance requirements for the subfamily as shown in the title. This publication forms part of a series dealing with measuring relays with more than one input energizing quantity and for which IEC 60255-6 gives the general requirements.
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Document Number
IEC 60255-12 Ed. 1.0 b:1980
Revision Level
1ST EDITION
Status
Current
Publication Date
Jan. 1, 1980
Committee Number
95