Voltage and Frequency Relay UFR1001E

The UFR1001E monitors voltage and frequency in plants for own generation of electricity. It fulfills the requirements of VDE-AR-N 4105 bdew-directive, G59/3, G83/2 and ÖVE/ÖNORM E 8001-4-712:2009 for generators connected to the public grid.

The UFR1001E is a dual-channel device and thus one-fault-proof. The function of the output-relays and of the connected switches can be monitored with feed-back contacts. When a connected switch does not switch off, the UFR does not switch on again. When a switch does not switch on it makes 2 restarts and thus improves availability of monitored plant.

The limits are pre-set according to VDE-AR-N 4105-2011-08, VDE-AR-N 4105:2018-11 and other standards. They can be changed if required and be protected with a code and/or a seal.
With a 2-step test both channels can be tested individually and the triggering time of connected switches is measured.
The standby input allows a remote shutoff e.g. with a RCR.

*Under and overvoltage monitoring 15…520 V
*Measuring phase-neutral or phase-phase
*Monitoring of under- and overfrequency 45…65 Hz
*Monitoring of quality of voltage (10-minutes-average)
*Monitoring of vector shift 2…65°
*Monitoring of rate of change of frequency (ROCOF, df/dt) 0,100…5,000 Hz/s
*One-fault-proof with monitoring of connected switches (defeatable when using the integrated switch of pv and battery inverter acc. to DIN EN 62109 (VDE 0126-4))
*2 automatic restarts at error
*Passive anti-islanding protection acc. to ch. 6.5.3 and app. D2
*Switching delay adjustable 0.05 … 300 s
*Switching back delay adjustable 0 … 6.000 s
*Preset values acc. to:
*VDE-AR-N 4105:2018-11 (Pr2), VDE-AR-N 4105-2011-08 (Pr1)
*VDE-AR-N 4110:2018-11 (PR11-14) and BDEW (Pr 3-6)
*G98 (G83/2) and G99 (G59/3) for Great Britain
*ÖVE standard for Austria
*VSE/EEA-CH 2014 for Switzerland
*Alarm counter for 100 alarms (trip value, cause and rel. time stamp)
*Record of added times of alarms
*Input for standby with counter and recording of time
*Test button and simulation with measuring of switching-times
*Sealing. All values can be read-out when sealed
*Easy installation and programming with pre-set programs
*Housing for DIN-rail-mount, 105 mm wide, mounting height 66 mm

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