Technical Specifications Generator and busbar input: 120 V AC nominal, 50/60 Hz; contact output: DPDT, 5 A at 250 V AC; phase window: ±5° to ±20° adjustable; frequency window: ±0.1 to ±1.0 Hz adjustable; operating temperature: -20 °C to +65 °C; enclosure: IP40; panel mount.
Functional Features Voltage, frequency and phase check; adjustable synchronizing windows; dead bus detection; sync permissive relay output; slip indication output; rugged electromechanical design.
Application Scenarios Generator paralleling control, standby generator grid connection, small power plant synchronization, engine generator set control panels.
Performance Parameters Phase accuracy: ±1°; frequency accuracy: ±0.02 Hz; relay operate time: < 30 ms; contact life: > 100,000 operations.
Material Composition Phenolic housing, copper sensing coils, phase detecting circuit, silver alloy relay contacts, adjustment potentiometers.
Structural Characteristics Round panel mount case; front glass window with pointer indicator; rear screw terminals; mounting bezel with lock ring.
Working Principle The relay compares generator and busbar voltage, frequency and phase. When all parameters fall within the adjustable windows, the output relay energizes to permit breaker closure, enabling safe paralleling of the generator to the busbar.
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