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Woodward 9907-838 Load Sharing Module

The Woodward 9907-838 LSM is designed to manage load distribution in generator systems where multiple generating units operate together on the same electrical bus.

The module receives generator current and voltage signals, calculates real-time load conditions, and provides adjustment signals to the engine governor or speed control system. This ensures that connected generators share electrical load evenly and maintain stable frequency during operation.

The 9907-838 supports both isochronous load sharing and droop load sharing modes, making it suitable for different power system configurations. Isochronous mode allows generators to maintain equal load distribution, while droop mode provides controlled load reduction characteristics during parallel operation.

The module is especially useful for upgrading generator systems that require integration between Caterpillar PWM-controlled engines and Woodward-based generator control equipment.

Accurate Load Sharing Control

The 9907-838 continuously monitors generator output conditions and adjusts control signals to maintain balanced power distribution between parallel generator units.

Key functions:

• Real-time load measurement

• Automatic load balancing

• Generator output stabilization

• Parallel operation support

Isochronous and Droop Load Sharing

The module supports two operating modes:

Isochronous Load Sharing

Provides equal load distribution between generators while maintaining stable system frequency.

Droop Load Sharing

Allows proportional load sharing during parallel operation with controlled speed reduction characteristics.

PWM Output Compatibility

The 9907-838 is designed for applications using PWM-based speed control signals, including Caterpillar electronic engine control systems.

Advantages:

• Easy integration with existing generator packages

• Improved governor compatibility

• Flexible retrofit capability

Compatible with Generator Synchronization Systems

The module supports integration with synchronizing equipment such as Woodward SPM-A systems, helping achieve smooth generator paralleling operations.

Stable Generator Operation

Provides accurate load distribution to prevent one generator from carrying excessive load.

Improved System Efficiency

Balanced generator loading improves fuel efficiency and reduces mechanical stress.

Flexible Retrofit Solution

Can be integrated into existing generator systems using compatible electronic governors.

Industrial Reliability

Designed for continuous operation in demanding power generation environments.

Diesel Generator Systems

Used for:

• Industrial backup generators

• Emergency power systems

• Remote power stations

Multi-Generator Parallel Systems

Applied in:

• Power plants

• Factory microgrids

• Distributed generation systems

Marine Power Systems

Suitable for:

• Ship generator control

• Offshore power platforms

• Marine electrical networks

Industrial Energy Systems

Used in:

• CHP systems

• Gas engine generators

• Independent power facilities

Q1: What is Woodward 9907-838?

Woodward 9907-838 is a Load Sharing Module designed to provide generator load balancing and torque bias control for parallel generator systems.

Q2: What is the main function of the 9907-838?

Its main function is to balance electrical load between multiple generators by sending correction signals to speed control systems.

Q3: Does the 9907-838 support droop and isochronous operation?

Yes. The module supports both isochronous and droop load sharing modes for different generator configurations.

Q4: What power supply does the 9907-838 require?

The module operates with an 18–32 VDC power supply, typically using a 24 VDC system.

Q5: Can it work with Caterpillar PWM engines?

Yes. The 9907-838 includes PWM output compatibility for Caterpillar digital speed control applications and allows integration with Woodward control systems.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

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Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.