Ziehl voltage and frequency relay UFR1001E

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The UFR1001E grid decoupling relay monitors voltage and frequency in power generation systems.
It complies with the requirements for centralized grid protection according to VDE-AR-N 4105:2018-11 in self-generating systems for feeding into the low-voltage grid. Corresponding parameters have been stored in Program 2 for VDE-AR-N 4105:2018-11, and the monitoring of the tie breaker and the protection parameters have been adjusted accordingly.

For feeding into the medium-voltage grid according to VDE-AR-N 4110:2018-11, the UFR1001E is suitable as unit protection on the generating units and as intermediate decoupling protection.

The device is designed with two channels and single-fault protection, thus meeting the requirements of VDE-AR-N 4105:2018-11. The function of the connected switch is monitored. When monitoring is enabled, the device will not restart if a shutdown error is detected. In the event of a startup error, restart attempts are made, thus ensuring increased system availability.

Limit values ​​for various applications are preset. They can be easily changed, where permitted.
With a 2-stage test, both tripping circuits can be tested separately and the switching time of connected tie switches can be determined.
The standby input can be used to remotely switch off the system, e.g. using a ripple control receiver.

• Under-/overvoltage monitoring 15 - 520 V (with voltage transformers up to 1,000 V)
• Measurement against N and/or phase-phase
• Under-/overfrequency monitoring 45 - 65 Hz
• Power quality monitoring (10-minute average)
• Vector surge monitoring 2…65° switchable
• ROCOF, monitoring frequency gradient df/dt 0.100...5.000 Hz/s
• Monitoring of the zero voltage U ₀ (ANSI 59v0)
• Single-fault-proof, with monitoring of the coupling switch (can be switched off when using the integrated coupling switches of PV and battery converters according to DIN EN 62109 (VDE 0126-4))
• 2 restart attempts in case of switch-on error of the coupling switch
• passive islanding detection according to Chapter 6.5.3 and Appendix D2
• Response time adjustable 0.05 … 300.0 s
• Switch-back time adjustable 0 … 6,000 s
• Presetting according to VDE-AR-N 4105-2018-11 (Pr 2) and VDE-AR-N 4105-2011-08 (Pr 1)
• Presetting according to VDE-AR-N 4110-2018-11 (Pr 11-14) and bdew guideline (Pr 3-6)
• Presetting according to TOR generator type A, B, C, D for Austria
• Presetting according to Synergrid C10/C11 for Belgium
• Presetting according to G98 (G83/2) and G99 (G59/3) for Great Britain
• Presetting according to NA/EEA-NE7 CH 2020 for Switzerland
• Alarm counter for 100 alarms (with trigger value, cause and relative timestamp)
• Recording of the alarm sum time
• Standby input with counter and time memory
• Test button and simulation function with measurement of shutdown times
• Sealing option and code protection for settings. The values ​​can be read even when sealed.
• easy commissioning and programming through preset basic programs
• Control voltage AC/DC 24-270 V
• Distribution housing V6, 6 HP, 105 mm wide, installation depth 66 mm

Data sheet

Operating instructions

To view CAD data, product videos and certificates, visit the manufacturer's website Ziehl

Please note that we also have a pre-wired and easy-to-install unit in stock, consisting of the Ziehl voltage and frequency relay UFR1001E, the required circuit breakers and a 63A contactor.