Technical Specifications Direct voltage sensing input: 2.4–5 kV AC, 50/60 Hz; internal step-down ratio: 40:1; phase window: ±3° to ±18° adjustable; frequency slip: 0.05–1.5 Hz adjustable; outputs: 2 SPDT relays, 5 A at 250 V AC; supply: 24 V DC ±10%; isolation voltage: 10 kV AC winding-to-winding; operating temperature: -20 °C to +65 °C; enclosure: IP40.
Functional Features Direct medium-voltage sensing; dual output relays for sync-permit and breaker control; adjustable phase and frequency thresholds; breaker closing time compensation; phase sequence check; voltage level check; isolation between MV and control circuits.
Application Scenarios Medium-voltage generator paralleling, industrial plant MV distribution systems, cogeneration plant grid connection, facility standby generation systems, medium-voltage switchgear integration.
Performance Parameters Phase matching accuracy: ±0.8° at MV input; frequency accuracy: ±0.05 Hz; isolation withstand: 10 kV AC for 1 min; relay operate time: < 20 ms; sensing linearity: ±0.5% full scale.
Material Composition Sheet metal enclosure, medium-voltage sensing transformers with epoxy insulation, control circuit board with galvanic isolation, heavy-duty output relays, insulated barrier between MV and LV sections.
Structural Characteristics Panel mount metal enclosure; front status indicators and adjustment screws; rear MV terminals and LV control terminals; internal insulating barrier between sections.
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