Product Description

Model number 9905-710 is in Woodward’s series of microprocessor-based Digital Synchronizer and Load Controls for paralleling, synchronizing, loading, and unloading three-phase AC generator sets. This model is capable of power factor control and process control functions, as it is one of the full upgrade level controls in this Woodward series.

A few of the load control features of the 9905-710 DSLC include:

• A frequency trimmer function for accurate frequency control in isochronous load sharing systems
• Simple load droop operation provides safe operation in parallel bus applications
• Adjustable load switch output with independent pick-up and drop-out points
• Load raise and lower inputs to adjust speed before synchronizing
• Voltage raise and lower inputs to adjust voltage before synchronizing

9905-710 is designed for use with a Woodward speed control (or other compatible devices) and an automatic voltage regulator. This unit has three-phase true RMS power sensing, ensuring accuracy even in the event of voltage fluctuations and unbalanced phase loading. It has an input voltage rating of 240 Vac and a speed bias of 1-5 Vdc.

Additional environmental specifications for the 9905-710 are:

• Humidity - 95% at 38 °C
• Mechanical shock - US MIL-STD 810C, Method 516.2, Procedures I, II, V
• Electromagnetic susceptibility - ANSI/IEEE C37.90.2; ANSI C37.90.1-1989
• Vibration - US MIL-STD 167, Type I