Technical Specifications Generator and busbar input: 120–480 V AC, 50/60 Hz; frequency range: 45–65 Hz; output: 4–20 mA bias signal to governor; frequency dead band: 0.02–0.5 Hz adjustable; frequency measurement accuracy: ±0.01 Hz; supply: 24 V DC ±10%; operating temperature: -20 °C to +70 °C; enclosure: IP20.
Functional Features Precision frequency difference measurement; proportional 4–20 mA governor bias output; adjustable frequency dead band; over/under frequency limit detection; zero bias at frequency match; fast response digital frequency measurement.
Application Scenarios Generator paralleling frequency matching, governor bias control for synchronization, engine speed trimming for paralleling, multi-generator load share trim, synchronizing system frequency loop.
Performance Parameters Frequency measurement accuracy: ±0.01 Hz; output linearity: ±0.5% full scale; response time: < 100 ms; frequency update rate: 20 ms.
Material Composition Industrial plastic housing, voltage sensing transformers, digital frequency measurement circuit, microcontroller unit, 4–20 mA output driver.
Structural Characteristics Compact rack plug-in module; front status LED; rear terminal block for all wiring; standard mounting footprint.
Working Principle The module measures the period of generator and busbar voltage waveforms, calculates frequency difference, and outputs a proportional 4–20 mA bias signal to the governor to adjust engine speed until frequencies match within the preset dead band.
There are no reviews yet.