Earth Fault Relay
Product Details
Product Glance
DIGITAL MICROPROCESSOR / MICROCONTROLLER BASED IDMT / DEFINITE TIME / INSTANTANEOUS EARTH FAULT RELAY (EFR).It is a current sensing device which is tropicalised professionally designed and tested for protection of Generators, Transformers and Feeders.
Prok dv's make DIGITAL MICROPROCESSOR / MICROCONTROLLER BASED IDMT / DEFINITE TIME / INSTANTANEOUS EARTH FAULT RELAY (EFR) can be employed with various earth fault protective schemes, which are explained in brief with figures. The magnitude of the earth fault current depends on the fault impedance and invariably the fault impedance for earth fault is higher than that for phase faults, hence the earth fault current is low compared to the phase fault currents. The fault impedance depends on the system parameter and also on type of earthing. The neutral may be solidly grounded, grounded through resistance or reactance.
Specification
- Compact
- IDMT (4 IEC curves), Definite Time & Instantaneous
- Wide setting ranges
- Fully digital acquisition & processing of data
- Wide operating voltages
- LCD display of operated current & fault current
- Rugged and Tropicalized design