Overview
The Woodward 9905-001 is an SPM-A Synchronizer, designed to adjust the speed of an offline generator. It ensures the generator matches the frequency and phase of another generator in an isolated multi-engine system. This synchronization enhances system reliability and operational efficiency.
Technical Specifications
General Information
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Model Number: 9905-001
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Type: SPM-A Synchronizer
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Input Voltage: 115 or 230 VAC RMS (selectable)
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Frequency Range: 50/60 Hz
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Phase Angle: ±10° (no voltage matching capability)
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Power Consumption: Maximum 5 W
Output Options
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High Impedance
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Low Impedance
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EPG (Electronic Power Governor)
Environmental Tolerance
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Operating Temperature: -40°C to +70°C (-40°F to +158°F)
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Relative Humidity: 5% to 95% (non-condensing)
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Shock Resistance: 10 g, 1/2 sine wave for 11 ms
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Vibration Tolerance: 1 mm peak-to-peak (2 Hz to 13.2 Hz), 0.7 g (13.2 Hz to 150 Hz)
Function and Operation
The 9905-001 SPM-A Synchronizer adjusts an offline generator’s speed setpoint. This adjustment ensures its frequency and phase align with another generator in the system. Once both match, the synchronizer automatically issues a contact closure signal to close the circuit breaker.
To accommodate different generators, the 9905-001 features adjustable dynamics. It operates within a 50–60 Hz frequency range and supports a ±10° phase angle. However, it does not perform voltage matching.
Power and Installation Considerations
This model requires 115 to 230 V AC RMS input voltage, with a ±10% voltage tolerance. It consumes a maximum of 5 W during operation. For optimal performance, ensure proper ventilation and avoid placing the synchronizer near direct heat sources.
Additional Information
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Speed Synchronizer
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10 AMP Capacity
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115/230 VAC Input
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5 W Power Consumption
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50/60 Hz Frequency
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Weight: 1.69 kg
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