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Woodward 9905-651
Product Name: Woodward 9905-651 — 2301A Load Sharing & Speed Control (9905/9907 Series)
Product Introduction: The 9905-651 is part of the widely adopted Woodward 2301A series of load sharing and speed control modules. Designed to govern the speed and load sharing functions of prime movers—such as diesel engines, gas engines, and turbines—this module provides precise isochronous or droop control, supporting both standalone and generator-parallel applications.
Detailed content
Technical Specifications:
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Enclosure: Metal chassis, panel-mountable
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Power Supply: Low voltage model: 20–40 Vdc; High voltage model: 90–150 Vdc or 88–132 Vac
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Operating Temperature: –40 °C to +70 °C
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Storage Temperature: –55 °C to +85 °C
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Humidity: 95% RH non-condensing
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Mounting Orientation: Any
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Dimensions (approx.): 304.8 × 203.2 × 76.2 mm (12″ × 8″ × 3″)
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Weight: ~2.7 kg (6 lbs)
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Speed Control Accuracy: ±0.25% FS
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Load Sharing Accuracy: ±5% of rated load with speed settings matched
Functional Features:
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Precise isochronous or droop control
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Compatibility with dual-coil actuators
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Forward-acting configuration
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Field-configurable for various speed ranges and control dynamics
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All potentiometers accessible from the front of the chassis
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Compatible with Woodward SPM-A synchronizers and other load control accessories
Application Scenarios: Standalone or parallel generator sets driven by diesel engines, gas engines, and turbines; isolated bus operation with multiple prime movers; base loading against an infinite bus; industrial power generation systems.
