Anti-islanding relay UFR1001E


Minste bestillingsenhet: 1
Product description
The grid protection device UFR1001E monitors voltage and frequency in three-phase current networks. In complies with the conditions for centralized NA-protection according to VDE-AR-N 4105 in in-plant power generators >30kVA, for feeding into the low voltage grid and the BDEW Directive for feeding into the medium voltage grid. When using with generators, the evaluation of feedback contacts for the period of a shut-down and during the synchronization can be suppressed.

The device has two channels which makes it more fail-safe. Input circuitry, evaluation and output relay are provided in duplicate. Two processors monitor each other mutually. Feedback contacts are used to monitor the functioning of both output relays and the section switch. During an alarm both channels shut down, the cause is displayed and it is reported through transistor outputs.

Summary of the functions

Applications include monitoring the network in generating plants such as solar and wind turbine generator systems along with mains protection in combined heat and power plants, also with synchronous generators (Vector surge). The device complies with the requirements of the public utility power providers for conventional protection in low and medium voltage systems >30 kVA.

Under and overvoltage monitoring 40…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), 2 automatic restarts at error
Passive detection of insular grid acc. to ch. 6.5.3 and app. D2
Support of synchronisation of generators
Self-test
Switching delay adjustable 0.05 … 130.0 s
Switching back delay adjustable 0 … 999 s
Switching back delay at alarms <3 s: 5 s
Preset values acc. to VDE-AR-N 4105 and BDEW, ÖVE/ÖNORM E 8001-4-712, G83/2, G59/3
Preset values acc. to G59/3 and G83/2 for Great Britain
Preset values acc. to ÖVE standard for Austria
Preset values acc. to VSE/EEA-CH 2014 for Switzerland
Alarm counter for 100 alarms (with 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
LEDs for alarms. Allocation of values and states of relays
Sealing. all values can be read-out when sealed
Easy installation and programming with 13 pre-set programs
Outputs for reporting of alarms to superior control
ousing for DIN-rail-mount, 105 mm wide, mounting heigt 66 mm
Medium voltage: 2x2 alarms for voltage and frequency (U>>, U>, U<, U<<, F>>, F>, F<, F<<)
Opprinnelsesland Tyskland
Frakt Vekt 0.23 kg
Vekt 0.23 kg
Lengde 0,000000 mm
Bredde 0,000000 mm