XUF2 Voltage and Frequency Relay (XUF2.)
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Configuration
- XUF2 (DIP setting for 50 Hz / 60 Hz and for Vn = 100 V / 110 V / 230 V / 400 V) – ANSI 27, 59, 81O, 81U
The relay XUF2 of the easy PROFESSIONAL LINE is a digital relay for voltage and frequency supervision of 1-phase or 3-phase systems and provides protection for electrical power generators and general equipment against in-admissible undervoltage or overvoltage as well as against frequency changes.
In addition it is possible to supervise the phase sequence.
Connecting two-wire system, DIP-switch setting Y
Connecting three-wire system, DIP-switch setting Δ
Connecting four-wire system, DIP-switch setting Y or Δ
Voltage Protection
| Parameter | Setting Range |
|---|---|
| V< | 75 … 100 × V n (cont.) |
| V> | 100 … 125 × V n (cont.) |
| tV<, tV> | 0 … 1 s / 0 …10 s (⌨) (cont.) |
| Hysteresis for V<, V> | 3% |
(⌨) Different setting ranges via DIP switches. ( Smart view covers the whole range.)
Frequency Protection
| Parameter | Setting Range |
|---|---|
| f< | 95 … 100 × f n (cont.) |
| f> | 100 … 105 × f n (cont.) |
| tf<, tf> | 0 … 1 s / 0 …10 s (⌨) (cont.) |
| Hysteresis for f<, f> | 0.25%, 0.5% |
(⌨) 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 | 50 … 750 V DC or 36 … 520 V AC (f = 35 … 78 Hz) |
Power consumption | approx. 4 W (terminals A1 and A3) |
- 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«
Interconnection of renewable energies (DER: distributed energy resources) to the public grid.
Over- / Undervoltage protection.
Protection of High, Medium and Low Voltage feeders against overvoltage (insulation damage) and undervoltage.
Frequency based protection: Over-/Underfrequency supervision