Woodward 9907-175 LSM Load Sharing Module

Description

Woodward 9907-175 LSM Load Sharing Module

Product Dimensions：

The Woodward 9907-175 is a high-precision Load Sharing Module (LSM). It is primarily designed to interface Woodward power management accessories with Caterpillar engines equipped with specialized speed controllers, facilitating seamless load sharing in parallel generator applications.

Product Detailed Description

The 9907-175 acts as the “intelligence” between a generator and the engine’s speed governor. It monitors the three-phase power output and adjusts the engine speed to ensure that when multiple generators are running in parallel, the proportional load is distributed evenly across all units. It essentially translates the load sharing signals from Woodward components into a format the Caterpillar governor understands.

Technical Parameters

Product Advantages

• Seamless Compatibility: Specifically engineered to allow Woodward load sharing accessories to communicate effectively with Caterpillar speed controls.
• Precision Control: Provides highly accurate isochronous load sharing (maintaining constant frequency) or droop operation depending on system requirements.
• Robust Protection: Includes built-in protection against under-voltage, over-voltage (up to 80 V DC), and reverse voltage polarity.
• Environmental Durability: Rated for a wide operating temperature range and high vibration resistance (up to 40 G shock), suitable for engine-room environments.

Important Considerations & Precautions

• Independent Overspeed Protection: CRITICAL. This module is not a safety shutdown device. The engine must be equipped with a totally independent overspeed shutdown system to prevent “runaway” conditions.
• ESD Awareness: The module contains sensitive electronic components. Always discharge static electricity and avoid synthetic clothing (like polyester) when handling the unit to prevent Electrostatic Discharge (ESD) damage.
• Wiring Separation: Keep PT (Potential Transformer) and CT (Current Transformer) wiring physically separated from low-voltage DC control wiring to prevent signal noise and interference.
• Potential Transformer (PT) Selection: Ensure the PT secondary voltage matches the module’s jumper settings (120V vs 240V) before applying power.

Product Applications

• Parallel Generator Sets: Ensuring two or more generators share the electrical load proportionally to their rated capacity.
• Emergency Power Systems: Used in hospitals, data centers, and industrial plants where multiple backup generators must synchronize and share loads.
• Marine Power Management: Balancing the load between shipboard generators during varying sea states and power demands.
• Caterpillar Engine Integration: Retrofitting or upgrading older Caterpillar engine governors to work with modern Woodward power management systems.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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