Phase Sequence Corrector

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Features :
* Microcontroller based design
* Indicates sequence via Red, Yellow, Blue LEDs
* Operates over wide range of supply voltages
* Also act as single phasing preventer
* Fixed unbalance input voltage protection

OPERATION
These relays work on 400V (Nom) 3—0 System and provide output to control output phase sequence.

When input sequence is R-Y-B, OKAY—RLY will be energised and NOOK—RLY is deenergised. Similarly when input sequence is R-B-Y, NOOK-RLY will be energized and OKAY-RLY is deenergised. These output can be wired with proper switch gear to maintain correct phase sequence at the output (Refer to our suggested circuits).