ZIEHL UFR1001E, Operating Instructions Manual

Page: 3 / 36

UFR1001E 12420-0701-03 Page 3 / 36 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.

Under and overvoltage monitoring 40…520 V

Measurement against N and/or phase-phase

Under and overfrequency monitoring 45…65 Hz

Monitoring the voltage quality (10 minute average value)

Vector-
surge monitoring 2…20° connectible

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

Response time adjustable 0.05 … 130.0 s, individual setting for each limit

Reset time adjustable 0 … 999 s, individual setting for each limit

Reset time 5s at limit violation < 3s

Presetting per VDE-AR-N 4105

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