Product Overview
Woodward 9905-204 is a high-performance DSM synchronizer module belonging to the Woodward 9900 series. Engineered for reliable generator synchronization, this module performs digital speed matching to ensure smooth and stable paralleling of generator sets. It operates with a 125 VDC power supply and supports both 115 VAC and 230 VAC systems, making it highly adaptable in various power generation environments. The unit features a small synchronizing window and precise voltage matching at 1% accuracy, which helps achieve fast, stable, and safe grid connection without frequency or phase shocks.
Technical Specifications
- Part Number: 9905-204
- Manufacturer: Woodward
- Series: 9900
- Product Type: DSM Synchronizer Module
- Voltage Compatibility: 115/230V AC
- Power Supply: 125 V DC
- Operating Temperature Range: -35°C to +65°C
- Board Dimensions: 33.0 cm (height) × 17.8 cm
- Module Dimensions: 8.25 cm (height) × 4.27 cm
- Synchronization Type: Digital Speed Matching (DSM)
- Synchronization Window: Small, high-precision window
- Voltage Matching Accuracy: 1%
Functional Features
Woodward 9905-204 uses advanced digital speed matching technology to accurately align generator speed, frequency, and voltage before paralleling. Its small synchronization window ensures precise locking, while the 1% voltage matching function maintains consistent voltage levels across connected systems. The module is built to withstand extreme temperatures from -35°C to 65°C, ensuring stable performance in industrial, marine, and standby power applications. Its compact size allows for easy integration into control panels, generator cabinets, and distributed control systems.
Application & Installation
This module is widely used in generator paralleling systems, microgrid controls, and industrial power management setups. Its compact physical dimensions simplify installation in limited-space environments. The robust construction and wide operating temperature range make it suitable for harsh working conditions. Proper mounting ensures reliable long-term operation in continuous generator control scenarios.
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Packaging List
- 1 × Woodward 9905-204 Synchronizer Module
- Mounting hardware
- Product documentation
FAQ
What is the function of Woodward 9905-204?
It is a digital speed matching synchronizer that synchronizes generators by matching speed, frequency, and voltage for safe paralleling.
What is the power supply for 9905-204?
It uses a 125 VDC power supply and supports 115/230V AC systems.
What is the voltage matching accuracy?
The module provides precise voltage matching within 1%.
What is the operating temperature range?
It can operate reliably from -35°C up to 65°C.
What type of synchronization does it use?
It uses DSM (Digital Speed Matching) with a small, high-precision synchronization window.
