• Teknika Electronics

Phase Sequence Corrector Relay

Phase Sequence Corrector 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 contractors. Only the correct sequence contactor signal will be on at a time. However contactors must be interlocked during power wiring. The relay resets automatically and remains off when voltage is low, zero, unbalanced or negative phase sequence. Manual reset can be provided.