Phase Sequence Relay

Phase Sequence Relay is used for protection of motors, pumps, transformers etc. from damage due to missing phases or negative phase sequences. A wrong sequence is corrected and two output contacts are provided which can be used to switch on the power contactors.

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Detailed Description for Phase Sequence Relay

A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a low-power signal, or where several circuits must be controlled by one signal.

Phase sequence failure or phase reversal in a three phase induction motor can be dangerous when the opposite direction not allow in certain applications like Non reversing gear box, Screw Compressors, Certain Specialized Pumps, Blower fan etc.



·         3Ø - 3 wire input

·         Monitors Phase sequence, Phase missing

·         LED indication: Relay ON

·         Slim, Space saving design

·         DIN Rail mount



·         AC power certification

·         Detection and analysis of emergency situations-voltage interruptions, dips & swells.

·         Detecting sources of distortion and calculation of respective energy losses-harmonics, negative sequence, zero sequence

·         Energy savings

·         Energy efficiency classification

·         Inspection of meter reading and billing systems

·         Determining energy losses in Power Transmission Lines




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