ELVAC
RELAY TESTING
OVER CURRENT/EARTH FAULT RELAY(50/51/50N/51N/67/67N)
- Pickup , Drop off & Threshold Test
- I-t characteristics curve test
- MTA test of Directional Relays,Tracing of Angle Limit
- Curve Analysis
DIFFERENTIAL RELAYS(87)
- Idiff.Pickup Test
- Stability Check,Biasing ,Over Flux Test
- 3rd Harmonic Test
- Analysis of ID-IR graph & Restraining Characteristics
OVER/UNDER VOLTAGE RELAYS(27/59/91)
- Delta Ramp Test
- Pickup,Drop off Test
- Zone test of Voltage Directional Relay
- Curve Analysis
DISTANCE RELAYS(21)
- Impedance Evaluation in Z-plane
- Finding the R/X characteristics&Z-t diagram
- Testing of the voltage dependent overcurrent starting function
- of distance relays
TYPES OF RELAYS TEST WE OFFER:
Relay type
- Delta Ramp Test
- Under/over-voltage relay
- Directional Power relay
- Field relay
- Reverse phase current relay
- Phase sequence voltage relay
- Incomplete sequence relay
- Power factor relay
- Voltage balance relay
- Ground detector relay
- Directional over-current relay
- Phase angle out of step relay
- Automatic reclosing relay
- Frequency relay
- Pilot wire receiver relay
- Lockout relay
- Voltage directional relay
- Power directional relay
- Tripping relay
IEEE NO
- 25
- 27/59
- 32
- 40
- 46
- 47
- 48
- 55
- 60
- 64
- 67
- 78
- 79
- 81
- 85
- 86
- 91
- 92
- 94