Sync Check Relay

Connecting two electrical systems that are not closely matched can cause expensive damage and disturbance to the electrical.

Sync check relay.

Sync check relay synchronism check relay are relays that allow unattended synchronization of a machine with a system. We would like to show you a description here but the site won t allow us. I have used the check synchronous relay with the setting of 1 5 mismatch. The volt free relay contacts change state when the voltage level phase relationship and frequency are within the selected synchronising limits.

Synchro check or sync check relays are used to verify that voltage phase angle frequency and phase rotation across two sides of a breaker are the same prior to closing the breaker. This relay contains the allowable percentage of mismatch of voltage and frequency. The synchro check relay spau 140 c can be used for both synchro check functions and voltage check functions. Today these are digital microprocess.

It means we can do still synchronization with the 1 5 voltage or frequency mismatch. Synchrocheck relays ensures that bus and line side voltages are within programmed differentials of voltage magnitude phase angle frequency and phase rotation is the same. The numerical synchro check relay type spau 140 c is a voltage measuring relay designed to be used when two power systems are to be connected together.