XR1 Rotor Earth Fault Relay (XR1.)
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Configuration
- XR1 – ANSI 64REF
The relay XR1 of the easy 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).
Protection Settings
| Parameter | Setting Range |
|---|---|
| R< | 20 … 140 kΩ |
| R<< | 0 … 30 kΩ |
| tR< | 0 … 25 s / 0 …50 s (⌨) (cont.) |
| tR<< | 0 … 10 s / 0 … 20 s (⌨) (cont.) |
(⌨) Different setting ranges via DIP switches. ( Smart view covers the whole range.)
Auxiliary Voltage
Voltage supply via wide-range power supply unit:
Auxiliary voltage range | 19 … 390 V DC or 36 … 275 V AC (f = 40 … 70 Hz) |
Power consumption | approx. 4 W (terminals A1 and A2) |
- Fast DIN rail mounting ⇛ easy and fast mounting
- Sealable plastic covers ⇛ safe (see if anybody has broken the seal)
- Super easy settings via front buttons ⇛ fast without computer
- LED and output relays fault indication ⇛ easy to find out what has happened
- Compact form factor ⇛ fits in small spaces
- IT security ⇛ no way to attack via Ethernet
- Robust and reliable ⇛ well proven reliable quality
- Wide Range Power Supply ⇛ don’t worry about available supply voltage
- Integrated Self-Test Procedure (via button) ⇛ fast and easy checks: relays, LEDs
For all relays except XD1-G and except XRI...: optional interface adapter XRS1 (order code XRS1A or XRS1*);
for all XRI... [except XD1-G]: optional adapter RS485 to USB (order code RSC2485USB1):
⇛ easy doing high precision settings via Windows ® PC software »Smart view«
Protection of electrical (HV, MV) synchronous generators against:
Underexcitation damages
Rotor Earth fault detection