/ RDLs / ISO 15926 Part 4: Core reference data - Edition 4 / PRIMARY RELAY

PRIMARY RELAY

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Identifier
https://posccaesar.org/ontology/15926-4/4.0/PRIMARY_RELAY
Definition A <PRIMARY RELAY> is an <ELECTRICAL RELAY> that is directly energized by the current or voltage in a main circuit, without an intermediate instrument transformer or shunt or transducer.