Product:Woodward 9907-018

2301A Load Sharing and Speed Control Model

The 9905/9907 series of the Woodward 2301A controls load sharing and speed of generators driven by diesel or gasoline engines, or steam or gas turbines. These power sources are referred to as “prime movers” throughout this manual. The control is housed in a sheet-metal chassis and consists of a single printed circuit board. All potentiometers are accessible from the front of the chassis. The 2301A provides control in either isochronous or droop mode.

The isochronous mode is used for constant prime mover speed with:

 Single-prime-mover operation;

 Two or more prime movers controlled by Woodward load sharing control systems on an isolated bus;

 Base loading against an infinite bus with the load controlled by an Automatic Power Transfer and Load (APTL) Control, an Import/Export Control, a Generator Loading Control, a Process Control, or another load-controlling accessory.

The droop mode is used for speed control as a function of load with:

 Single-prime-mover operation on an infinite bus or

 Parallel operation of two or more prime movers.

The following is an example of the typical hardware needed for the 2301A system controlling a single prime-mover and generator:

 A 2301A electronic control

 An external 20 to 40 Vdc power source for low-voltage models; 90 to 150 Vdc or 88 to 132 Vac for high-voltage models

 A proportional actuator to position the fuel-metering device, and

 Current and potential transformers for measuring the load carried by the generator.

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