Protection of 3 Phase devices against Over voltage, Under voltage, Single Phasing, Over Frequency, Under Frequency, Reverse Phasing & unbalance supply are one of the major issue in electrical systems. For safe running of 3-phase devices, special protections that keep a continuous watch on supply conditions are very essential. The major cause of maximum load burn-out is overloading which occurs due to unbalance supply, Single Phasing & Reverse phasing conditions. VFR3P detects such Conditions & protect the load from burn out. 'PROTON's VFR 3P' offer above protections along with 3 digit display showing R-Y,Y-B,BR voltages in scanning mode with precise accuracy.
LOW/HIGH voltage tripping to ensure trouble free running of 3-phase Loads, And also protection is provided against Over /Under Frequency
THREE PHASE VOLTAGE MONITORING RELAY- VFR 3P
Features :
- Voltage protection along with digital voltage readout.
- Over Frequency/ Under Frequency protection along with digital Line Frequency readout.
- Wide range of supply variation.
- Unit will also work if any one phase is present.
- Protection against under voltage.
- Microcontroller based technology.
- Message Display for SPP, Reverse Phasing & Unbalance Faults.
Salient
Features :
- Protection against Over voltage.
- Phase unbalance protection.
- Trip Delay for Under voltage & Unbalance is settable
- Reverse Phasing Protection can be able
to bypass through settings.
- Single Phasing & Reverse phasing protection.
- No separate auxiliary supply required.
- All the set points settable by keys.
- Hold feature:- Press INC key in Running
condition to observe particular supply voltage.
