Sync Check Relay Sel

The sel 451 5 based a25a is sold as a configuration and documentation disc.

Sync check relay sel.

The synchro check relay can be used to assist in the semi automatic parallelling of two ac power systems. Regardless of the synchronizing settings the close permissive contact s 25a1 and or25a2 will only assert if the generator frequency is above. The sel 300g actually all sel relays configured with sync check must be connected with the generator voltage syncp on terminals z09 z10 z11 z12 and the system voltage vs on terminals z15 z16. Voltage relays vr 300 the vr 300 is a fixed mounted industrial grade protective relay that offers multiple protective features in a single package.

Optional mirrored bits communications and power quality monitoring add flexibility to solutions. It provides voltage protection functions including over undervoltage loss of phase over underfrequency monitoring and sync check. The sel 351 relay has built in ethernet and ieee c37 118 synchrophasors and is ideal for directional overcurrent applications. The sel 351 is the protection standard for utility and industrial electrical systems around the world.