The UFR1001E Voltage and Frequency Relay is a dual-channel grid and plant protection device designed for monitoring voltage and frequency in power generation systems. Fully compliant with major international standards such as VDE-AR-N 4105:2018-11, VDE-AR-N 4110:2018-11, G98, G99, NRS 097-2-1:2017 Ed 2, and more, the UFR1001E provides reliable anti-islanding protection and enhances the operational safety of generators connected to public grids.
Ideal for solar, wind, and other grid-tied systems, it features advanced monitoring functions including under/over voltage, frequency, ROCOF, and vector shift. With configurable parameters, automatic restarts, and alarm logging, the UFR1001E ensures both compliance and reliability in critical energy systems.
Product Features:
- Displays battery voltage, current, power, amp-hours, and state of charge
- Time-to-go estimate based on current usage
- Programmable alarms and relay for load/generator control
- 500A quick-connect shunt included
- Bluetooth monitoring (with optional dongle)
- Easy installation with all cables and mounting parts included
- BMV-702 adds input for second battery, temperature, or midpoint voltage
- VE.Direct port for system integration
- Low power consumption & high accuracy
Specifications:
Power Supply
- Rated supply voltage: AC/DC 24–270 V, 0/45–65 Hz, <5 VA
- DC range: 20.4 – 297 V
- AC range: 20.4 – 297 V
Voltage Monitoring
- Measurement method: True RMS
- Measurement (phase-phase): AC 15–530 V (display from 5 V)
- Setting range (phase-phase): AC 15–520 V
- Measurement (phase-neutral): AC 10–310 V (display from 5 V)
- Setting range (phase-neutral): AC 15–300 V
- Hysteresis: Adjustable 1.0–180 V
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Measurement accuracy:
- With neutral: ±0.6% of measured value
- Without neutral: ±0.8% of measured value
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Display accuracy:
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100V: -1 digit (1 V resolution)
- <100V: -1 digit (0.1 V resolution)
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Frequency Monitoring
- Measurement range: 40–70 Hz
- Setting range: 45.00–65.00 Hz
- Hysteresis: 0.05–10.00 Hz
- Accuracy: ±0.04 Hz ± 1 digit
Vector Shift Monitoring
- Measurement range: 0–90.0°
- Setting range: 2.0–65.0°
- Switching delay: < 50 ms
- Delay at power-on (Us): Adjustable 3–240 s
- Switch-back delay: Adjustable 2–20 s
ROCOF (Rate of Change of Frequency)
- Measurement range: 0.100–5.000 Hz/s
- Evaluation: 4–50 cycles
Digital I/O
- Digital outputs (insulated): DC 4.5–27 V, max. 20 mA per output
- Feed-back contact input voltage: DC 15–35 V
- Switching time of connected switches: Adjustable 0.5–99.0 s
Relay Outputs
- Type: 2 change-over contacts
- Functionality: See operating manual
Timing Settings
- Switching delay (dAL): Adjustable 0.05 s (±15 ms) to 300 s
- Switch-back delay (doF): Adjustable 0 s (approx. 200 ms) to 6,000 s
Environmental Conditions
- Operating temperature: –20°C to +55°C
- Storage temperature: –25°C to +70°C
- Climatic class (IEC/EN 60721-3-3): 3K5 (excluding condensation and ice formation)
- Pollution degree: 2
- Overvoltage category: III
- Rated impulse voltage: 4000 V
- Rated insulation voltage (Ui): 300 V
- Operating time: 100% continuous
EMC Compliance
- Immunity: EN 61000-6-2
- Emission: EN 61000-6-3
Housing & Installation
- Design: V6
- Mounting: DIN rail (35 mm, EN 60715) or screw M4
- Dimensions (H x W x D): 90 x 105 x 69 mm
- Mounting height: 66 mm
- Weight: Approx. 250 g
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Protection rating:
- Housing: IP30
- Terminals: IP20
