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- Over-current monitoring relay
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Phase monitoring relay SEL-321-5distanceover-currentprogrammable
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Characteristics
- Measured/monitored value
- phase, distance, over-current
- Other characteristics
- programmable, digital
Description
SEL-321-5 Phase and Ground Distance Relay
The SEL-321-5 Relay is designed especially for EHV and HV applications on 50 Hz systems. The relay provides enhanced single-pole tripping, phase and ground distance, directional overcurrent, negative-sequence overcurrent, and fault locating. The SEL-321-5 Relay contains all the protective elements and control logic necessary to protect, monitor, and control overhead lines.
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