The Woodward PGG-EG Governor/Actuator combines a proven PG hydro-mechanical governor with electronic actuator control, providing motor speed setting of the ballhead backup governor for generator applications. The least-fuel-selection feature ensures smooth transfer to mechanical backup on electronic signal loss, with externally adjustable droop and load limit as standard.
Key Features
Electronic Control
- Electronic actuator with Woodward torque motor
- Output range: 16 to 678 N·m (12 to 500 lb-ft)
- 30° rotary travel standard (25 mm linear travel available)
- Compatible with Woodward analog and digital electronic controls
- Least-fuel-selection for bumpless electronic-to-mechanical transfer
- Available in direct-acting or reverse-acting configurations
Mechanical Backup
- Motor speed setting of ballhead backup governor
- Externally adjustable droop: 0 to over 8%
- Droop based on dial setting and output cylinder position — closer electronic/mechanical speed matching
- Adjustable load limit prevents overspeed or overload on electronic failure
- Self-contained oil supply (CW, CCW, or reversible drive)
- Oil pressure maintained by relief valve and accumulators
- Optional lube oil and water pressure alarm/shutdown
Applications
- Generator drive applications with electronic control and mechanical backup
- Critical power generation requiring redundant speed control
- Diesel and gas engine generators
- Remote speed-setting with droop on mechanical backup
- Parallel operation with utility bus or dissimilar governors
Drake Controls Services
Drake Controls is a Woodward Authorized Distributor. We stock PGG-EG governor/actuators and provide repair, overhaul, and field support. For repair or overhaul, submit a repair request or email service@drakecontrols.com.