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Product Overview
The Woodward 8525-971 UG MAS Driver Governor is a high-performance mechanical actuator system designed to operate in conjunction with UG-8 or UG-40 governors. It delivers precise control over fuel flow and speed regulation in industrial engines, typically found in turbines, diesel engines, and generator sets. The unit is particularly valued in demanding applications where reliability, mechanical integrity, and control accuracy are essential.
This MAS (Mechanical Auxiliary Servo) driver governor variant enhances the capability of traditional UG governors by integrating hydraulic force amplification, which allows the unit to manipulate larger fuel racks or valves with minimal manual effort.
Woodward governors are renowned for their durability and fine-tuned performance in harsh industrial environments. The 8525-971 model reflects decades of engineering evolution and continues to support mission-critical applications across various sectors.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 8525-971 UG MAS Driver Governor |
| Actuator Type | Mechanical-Hydraulic Servo (MAS) |
| Compatible Governors | UG-8, UG-40 |
| Control Method | Mechanical with Hydraulic Assistance |
| Stroke | ±10 mm |
| Operating Pressure Range | 275 – 1034 kPa (40 – 150 psi) |
| Response Time | < 0.05 seconds |
| Maximum Output Force | Up to 180 lbf (800 N) |
| Fuel Control Range | Adjustable via linkages |
| Mounting | Flange Mounted |
| Operating Temperature | -40°C to +93°C (-40°F to +200°F) |
| Material | Cast Iron, Stainless Steel Internal Components |
| Sealing | Industrial-Grade Hydraulic Seals |
| Dimensions (L x W x H) | 150 × 230 × 175 mm |
| Weight | 1.6 kg |
Applications
The 8525-971 UG MAS Driver Governor is used across a variety of industries due to its versatile and dependable control capabilities. Typical applications include:
-
Industrial Gas and Steam Turbines
Ensures consistent turbine speed and load balancing in process control systems. -
Large Diesel and Gas Engines
Used in backup generator sets, marine propulsion, and mining equipment to maintain stable engine RPM. -
Power Generation
Supports automatic control of prime movers for generator synchronization. -
Compressor Stations
Regulates engine speed to control gas pressure in pipelines. -
Oil & Gas Platforms
Provides remote, reliable engine governance in offshore operations.
Advantages
-
Robust Mechanical Design
Designed for longevity in harsh industrial conditions with minimal maintenance. -
High Torque Output
Capable of managing large actuating loads due to hydraulic amplification. -
Flexible Compatibility
Works with multiple UG governor models, ideal for retrofitting older systems. -
Quick Response Time
Ensures optimal performance in applications requiring rapid speed correction. -
Manual and Remote Control Integration
Can be configured for local or automated system inputs. -
Low Operating Cost
Proven design reduces downtime and maintenance frequency.
Frequently Asked Questions (FAQ)
1. What engines are compatible with the 8525-971 UG MAS Driver Governor?
This governor is compatible with large diesel and gas engines, especially those using UG-8 or UG-40 governors.
2. Is this product suitable for marine applications?
Yes, it is commonly used in marine propulsion systems due to its rugged build and precision control.
3. Does it require electrical input to operate?
No, it operates purely mechanically and hydraulically, without the need for electrical input.
4. What kind of maintenance does it require?
Periodic inspection of hydraulic fluid and seals is recommended. Minimal maintenance is needed due to its robust design.
5. Can it be used in high-temperature environments?
Yes, the operating temperature range supports up to +93°C (+200°F), making it suitable for high-heat applications.
6. Is this governor suitable for generator load sharing?
Yes, it can be part of a load-sharing setup when connected with UG governors and control linkages.
7. How is the governor mounted?
It is flange-mounted, typically on engine frames or near fuel rack assemblies.
8. Can the governor be configured for redundant control systems?
Yes. It can be incorporated into redundant control systems with mechanical failovers or dual-governor setups to ensure uninterrupted operation in mission-critical environments.
9. Does it require any calibration before use?
Yes, initial setup and calibration are necessary for optimal performance, typically done during commissioning.
10. Can this unit be used in retrofitting older engines?
Absolutely. Its mechanical design makes it ideal for retrofitting legacy systems that require modernized control.
Related Models from the Same Series
| Model | Description | Compatible With |
|---|---|---|
| 8235-160 | UG-40 Governor with Electric Assist | Diesel Engines |
| 8256-042 | UG-8 Governor with Hydraulic Boost | Compressors, Turbines |
| 8525-870 | UG MAS Driver Governor, Compact Design | Industrial Gas Engines |
| 8935-210 | UG Governor with Reverse Rotation | Marine Applications |
| 8200-970 | UG-25+ Electronic-Hydraulic Governor | Generator Sets |
| 8290-002 | UG Actuator Driver with Remote Speed Control | Pipeline Engines |
Popular Models from Woodward (Same Brand)
| Model | Description | Application |
|---|---|---|
| 2301A | Load Sharing and Speed Control | Generator Sets |
| ProAct™ ICS | Integrated Control System for Engine Management | Power Generation, Marine |
| 505XT | Turbine Control System | Steam Turbines |
| EasyGen 3500XT | Generator Control and Synchronization | Industrial Power Plants |
| MicroNet Plus | Real-Time Digital Control Platform | Critical Engine Control |
| Atlas-II | Redundant Turbine and Compressor Controller | Oil & Gas, Utilities |
