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WOODWARD 9907-028 SPM-A Generator Speed

9907-028 is Woodward SPM-A analog generator synchronizer module, specially designed for generator grid paralleling control. It automatically detects frequency and phase difference between generator and utility bus, outputs closing signal only when phase angle deviation is within allowable window, effectively eliminate out-of-sync closing damage to generator units, widely used in diesel/gas genset, marine power station and backup power microgrid systems. This model only matches speed & phase without voltage matching function.
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WOODWARD 9907-028 (SPM-A Synchronizer Module)Product Introduction
Basic Information
Brand: WOODWARD
Model / Order PN: 9907-028
Full Product Name: SPM-A Generator Speed & Phase Synchronizer
Country of Origin: United States
Customs HS Code: 8537209000
Dimension: 273.6mm(W) × 214.1mm(H) × 59.2mm(D)
Net Weight: 1.71 kg
Protection Class: IP20 indoor cabinet


Input Parameters
1. Main Power Input: 115/230 VAC, 50/60Hz, tolerance ±10%
2. PT Voltage Input: Generator voltage & bus voltage sampling input
3. Enable Switch Input: External permission contact input for synchronization
4. Frequency Range Support: 50Hz / 60Hz dual-mode adaptive
Output Parameters
1. Circuit Breaker Closing Output: High-impedance relay contact output
2. EPG Speed Regulating Signal Output: Analog signal to governor
3. Status Indicator Output: Phase match, enable, fault LED light output
4. Stability Adjustment Analog Output: Adjustable phase lock control signal

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