Technical Specifications Voltage input: generator and busbar, 120–480 V AC, 50/60 Hz; voltage window: ±2% to ±20% adjustable; frequency window: ±0.1 to ±2.0 Hz adjustable; phase window: ±5° to ±30° adjustable; output: 1 DPDT relay, 10 A at 250 V AC; supply: 24 V DC ±10%; operating temperature: -20 °C to +70 °C; enclosure: IP40.
Functional Features Three-condition sync check: voltage, frequency, phase; independently adjustable windows; DPDT output contact; dead bus detection; slip direction indication; adjustable hysteresis.
Application Scenarios Generator paralleling permission check, breaker closure interlock, synchronizer backup verification, manual synchronizing systems, power system synchronization safety.
Performance Parameters Voltage accuracy: ±0.5%; frequency accuracy: ±0.05 Hz; phase accuracy: ±1°; relay operate time: < 25 ms; repeatability: ±0.5% of setting.
Material Composition Flame-retardant plastic housing, voltage sensing transformers, frequency and phase detection circuits, DPDT output relay, adjustment potentiometers.
Structural Characteristics Panel mount module; front adjustment controls and status indicators; rear screw terminal block; mounting ears.
Working Principle The module continuously compares generator and busbar voltage magnitude, frequency and phase angle. The output relay energizes only when all three parameters fall within their respective preset windows, providing a permissive signal for breaker closure.
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