ZIEHL UFR1001E, Operating Manual

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UFR1001E 12420-0701-08 Page 4 / 45 www.ziehl.de
1. Application and brief description
The UFR1001E system-disconnection relay 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.
2. 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.
Measurement 3 / 2 / 1 phases against N and/or phase-phase
Under and over
Monitoring the voltage quality (10 minute average value)
Vector-
Fail-safe, with monitoring of the connected section switch (can be switched off), 2 automatic restarts
on error
Passive autonomous system detection in accordance with Chapter 6.5.3 and Appendix D2
Monitoring of Rate of Change of Frequency (ROCOF, df/dt) connectible
Supports the mains synchronization when using generators
Self-test
130.0 s, individual setting for each limit
Reset time 5s at limit violation < 3s
Presetting per VDE-AR-N 4105, BDEW, ÖVE/ÖNORM E 8001-4-712, G83/2, G59/3
Alarm counter for 100 alarms (with trip value, cause and rel. time stamp)
Record of the cumulative time of alarms
Standby input with counter and time memory
Test button, simulation function, measurement of the shut-down times
LEDs for alarm signals, measurement value allocation and relay status
Sealing facility and code protection for settings, values can also be read in the sealed state
Simple commissioning and programming through 6 basic programs with preset limits
Message outputs for general alarm and for forwarding the cause of switching to the upstream
controller (transistor, max. DC 27 V, 20 mA)
Medium voltage:
Per 2x2 limits for voltage and frequency: U<<, U<, U>, U>>, F<<, F<, F>, F>>
Hysteresis, response and reset value individually adjustable
Control voltage AC/DC 24-270 V
Distributor housing V6, 6 TE 105 mm wide, front-to-back size 55 mm