The 2C63 Series relay is a three pole unit fitted with independently adjustable current sensing circuits driving a common adjustable digital setting timing element with two N/O & two N/C self reset output contacts. Three additional C/O self reset output contacts can be configured for either instantaneous (One for each phase) or time delayed operation. A relay itiate input is provided for the time delayed element. in The internal time delay element is initiated when both the current exceeds the user selectable setting & the relay initiate input is energized. An optional internal timer initiate tatus input may be specified to allow timer operation in the absence of P/U current. s After pick up & time out the latching target indicator may be hand reset at the front panel or emotely reset via a status input. r Fully solid state sensing & measuring circuitry is employed with each phase current setting continuously adjustable on a front panel control. Air core CT’s are employed to provide ery fast reset characteristic. v The wide range switchmode power supply, input current transformer, output relays & status inputs form the essential barriers against high voltage line transients. Instantaneous Relay The 2C64 instantaneous current check relay may be specified where an integrated delay timer is not required. This relay has identical performance characteristics to the 2C63 less he time delay function. t Zero Stand by Burden Relay The 2C80 current check relay may be specified where a zero stand by burden is required. Initiation of the relay is achieved through application of the auxiliary supply on a single or three phase basis. The linear power supply provides high speed start up but results in higher operating burden & non continuous rating. The 2C80 may be specified with or without an integrated time delay element.
