Description
The Woodward 9907-838 is a specialized Load Sharing Module (LSM) designed to provide precise control for parallel-operated engine generator sets. This module is a core component in power management systems, allowing multiple generators to share electrical load proportionally based on their capacity. By monitoring current and voltage signals, the 9907-838 communicates with the electronic governor to ensure smooth load transitions and maintain frequency stability. It is widely used in industrial, marine, and mission-critical power generation applications where multiple units must operate in tandem to meet fluctuating load demands.
Key Technical Specifications
| Parameter | Value/Description |
| Model Number | 9907-838 |
| Component Type | Load Sharing Module (LSM) |
| System Compatibility | Woodward analog load sharing systems |
| Input Signal | Generator Current Transformer (CT) inputs |
| Output Type | Speed control bias signal to governor |
| Operating Voltage | 24V DC nominal |
| Frequency Range | 50/60 Hz compatible |
| Control Accuracy | High-precision proportional load balance |
| Mounting | DIN-rail or control cabinet panel |
| Environment | Industrial-grade, vibration-resistant |
Recommended Related Models
These components are often integrated into Woodward power management architectures alongside the 9907-838 to complete the control loop:
- 9907-164: Speed Control/Governor Unit
- 9907-018: Synchronizer Module
- 9907-835: Load Sharing and Speed Control Module
- 9907-167: Peak Load Control Module
- 8271-850: Digital Synchronizer and Load Control (DSLC)
- 8440-1875: EasyGen-3200XT Controller
- 8440-2027: EasyGen-2500 Controller
- 8272-544: Power Management Control (MSLC)
- 9905-001: Speed Sensing Unit
- 9908-011: Auxiliary Power Interface Module
Important Configuration Note: The 9907-838 requires correct calibration of the “Gain” and “Stability” settings to match the response characteristics of the connected engines. When replacing a unit, ensure that the current transformer (CT) ratios are correctly set on the module’s internal switches to prevent mismatched load distribution between generators.
