directional relay

directional relay

[də′rek·shən·əl ′rē‚lā]
(electricity)
Relay which functions in conformance with the direction of power, voltage, current, pulse, rotation, and so on.
References in periodicals archive ?
Tenders are invited for Supply Of 33KV, 30/L+1E/L with high set features numerical non directional relays with instantaneous feature and master trip relays (as per specification) of AP Transco approved make like ER,Siemens,ABB,Schneider or Megawin.
A special feature on the CS, "Output Relay Interlocking," keeps directional relays interlocked meaning there can only be one crane operation at a time, such as forward or reverse.
Tenders are invited for Supply of 33KV, 3O/L+1E/L with high set features numerical non directional relays along with master trip relay (as per specification) of AP Transco approved make like ER, Siemens, ABB, Schneider or Megawin (As per specification)

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