CONDITION : NEW SEALED PACK PRODUCT WITH INVESTIGATION REPORT FROM WOODWARD !

Key Specifications & Features

1. Model & Revision

   • Part Number: 9905-797

   • Revision: K (latest firmware/hardware updates)

   • Series: Part of Woodward’s Digital Control System (DCS) lineup

2. Core Functions

   • Generator Synchronization:

     • Automatic phase/voltage/frequency matching

     • Breaker closing with zero-crossing prediction

   • Load Sharing:

     • Isochronous or droop mode operation

     • kW/kVAR load balancing between parallel generators

3. Inputs & Outputs

   • Voltage Sensing: 120-480V AC (phase-to-phase) via PTs

   • Frequency Input: 40-70Hz range

   • Analog Outputs: 4-20mA for actuator control

   • Digital I/O:

     • 8+ configurable contact inputs/outputs

     • RS-485/Modbus RTU for SCADA integration

4. Performance Parameters

   • Synchronizing Accuracy:

     • Phase angle: <±5°

     • Voltage: <±0.5%

     • Frequency: <±0.05Hz

   • Response Time: <100ms for load adjustments

5. Power & Environmental

   • Supply Voltage: 18-32V DC (24V typical)

   • Operating Temp: -40°C to +70°C

   • Certifications: UL 508, IEC 60068 (vibration/shock resistant)

Typical Applications

• Power Plants: Multi-gen synchronization

• Marine Vessels: Shipboard power management

• Microgrids: Renewable integration