Professional Line – XR1
Rotor Earth Fault Protection
Protection relay XR1 of our PROFESSIONAL LINE is used for detection of rotor earth faults in synchronous machines. The earth fault element detects high and low impedance earth faults in rotor windings and is in two stage design (for alarm and trip).
When compared to the conventional protection equipment all relays of the PROFESSIONAL LINE reflect the superiority of digital protection techniques with the following features:
- High measuring accuracy by digital data processing
- Fault indication via LEDs
- Extremely wide operating ranges of the supply volt-age by universal wide-range power supply
- Very fine graded wide setting ranges
- Data exchange with process management system by serial interface adapter XRS1 which can be retrofitted
- Extremely short response time
Compact design by SMD-technology In addition to this, relay XR1 has the following special features:
- Detection of high impedance earth faults in rotor windings and is in two stage design.
- Short circuit and overvoltage proof measuring input for earth fault protection
- Separately setting of trip delay for R< and R<<
| Power supply: | 19 to 270 VAC / 19 to 360 VDC |
| Ambient temperature | |
| Storage: Operation: | `-20 °C to 70 °C `-10 °C to 55 °C |
| Voltage AC input: | 100 VAC and 400 VAC, 0 to 2 x Un |
| Current AC input: | 1 A or 5 A |
| Discrete inputs (isolated): | 19 to 270 VAC / 19 to 360 VDC |
| Relay outputs: | 250 VAC 6 A, 250 VDC 0.3 A, 24 VDC 6 A |
| Housing: DIN-Rail mount | |
| Dimension (W×H×D): | 75 × 255 × 110 mm |
| Sealing: | IP40 |
| Weight: | approx. 1,800 g |
