|Digital Energy > Protection & Control > Pilot and Distance Relays > CEYG Reactance and Mho Phase Directional-distance|
The CEY51A and CEY52A are extended range, three-phase, high-speed, single-zone mho directional-distance relays. These relays include three single-phase units with provision for single phase testing. One target and seal-in unit provides indication of operation for all three distance units and the three-phase contacts are brought out to separate terminal studs.
A CEY53A is a single phase, extended range, zone-one mho distance relay specifically for shunt reactor protection and includes the normal target seal-in unit.
Permissive tripping schemes
Direct transfer tripping schemes
Mho directional ground distance
Quadrature voltage polarized