Manufacturer: ZIEHL industrie-elektronik GmbH
Model / Type: UFR1001E
Product: Voltage & Frequency Relay (Grid and Plant Protection)
Function: Monitors grid voltage and frequency for own energy generation plants
Channel Design: Dual-channel (one-fault proof)
Supply Voltage: AC/DC 24 – 270 V
Power Consumption: < 5 VA (typical)
Voltage Monitoring Range:
• Under/overvoltage AC 15 … 520 V (phase-neutral) / 15 … 530 V (phase-phase)
Frequency Monitoring Range: 45 … 65 Hz
Voltage Measurement Types: Phase-neutral and phase-phase
Vector Shift Monitoring: 2 … 65° (switchable)
ROCOF Monitoring: Rate of change of frequency df/dt 0.100 … 5.000 Hz/s
Zero Voltage (U0) Detection: Yes (ANSI 59v0)
Voltage Quality Monitoring: 10-minute RMS average
Passive Anti-Islanding Protection: Yes
Output Relays: 2 × change-over contacts (CO) with feedback monitoring of connected switches
Automatic Restart Attempts: 2 at switch-on error
Adjustable Timers:
• Switching delay: 0.05 … 300 s
• Switching-back delay: 0 … 6000 s
Test & Simulation: Integrated test function to measure switch-off times
Standby Input: Remote shut-off input available
Preset Limits: According to VDE-AR-N 4105, VDE-AR-N 4110, VDE-AR-N 4120, G98, G99, ÖVE/ÖNORM E 8001, and other standards
Mounting: DIN-rail mount (V6 housing, 6 TE, 105 mm width, 66 mm depth)
Protection Class: IP30 (housing) / IP20 (terminals)
Weight: ~250 g
Applications: Grid connection protection for photovoltaic, CHP, wind, battery, and other own generation plants
