open-phase protection

open-phase protection

[¦ō·pən ¦fāz prə′tek·shən]
(electricity)
Effect of a device operating on the loss of current in one phase of a polyphase circuit to cause and maintain the interruption of power in the circuit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.