UFR1001
12290-0702-05
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Application and brief description
The voltage and frequency relay UFR 1001 monitors the voltage and the frequency in one- or three-phase
voltage grids with or without N and, if required, switches rapidly off. The unit can be easily adapted to the
network operator's requirements.
With the integrated vector-surge relay, it is also suited for monitoring synchronous generators.
After selecting a basic program, the limits for over/undervoltage and the over/under frequency can be
programmed.
When using programs with vector-surge monitoring, the K2 relay only reports the vector surge.
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Summary of the functions
Applications include monitoring the network in large photovoltaic plants, power system protection in
combined heat and power plants, also with synchronous generators
(vector surge) or in general, monitoring the network quality in systems, on machines or
in power supply systems.
The device complies with the requirements of the power suppliers for conventional
protection in low-voltage systems >30 kVA.
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4-digit digital display for voltages, frequency and vector surge
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Under and overvoltage monitoring 40…520 V
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Under and overfrequency monitoring 45.00…65.00 Hz
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Monitoring the voltage quality (10 minute mean average value)
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Vector-
surge monitoring 2.0…20.0 °
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Response time adjustable 50
ms…60 s
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Reset delay (zero voltage maintenance) can be set 0…1000 s (Vector surge 3…240 s)
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Alarm-counter for up to 100 alarms (with measured value and reason)
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Added time of alarm up to 999 hours. Displays the time, alarms have been active (while supply voltage
applied only).
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LEDs for alarm signals, measurement value allocation and relay status
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2 output relays, each for frequency and/or voltage monitoring
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Relay function operating or idle current programmable
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Locked shutdown or auto-reset programmable
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External input for Enable / Reset
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Delay time for Enable input during vector-surge monitoring
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Easy to program with 5 selectable basic programs
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Code protection against manipulation of the setpoint values
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Sealing facility for set point values
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Control voltage AC/DC 24-270 V
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Distributor housing for panel mounting 4 TE, front-to-back size 69 mm
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Mounting on 35 mm mounting rails DIN EN 60715