This part of the IEC 60255 series specifies minimum requirementsfor thermal protection relays. This standard includes specificationof the protection function, measurement characteristics and testmethodologies.
The input energizing quantities are the measuring signals, suchas phase (or line) currents, and ambient/environmental or windingtemperatures (if required or applicable). Their ratings andrelevant requirements are specified in IEC 60255-1.
Specifies performance requirements for the subfamily. 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. 153554b96e