9905-133

About the 9905-133

Control model 9905-133 supplied by Woodward 2301A series is a control that is bought, sold, refurbished, and repaired by AX Control inc. When dealing with the 9905-133 control be sure that at the connection of the control and current transformers that the phase A transformer is connected to terminal one, phase B is connected to terminal two, and phase C is connected to terminal three, the voltage of the potential transformers secondary line-to-line has to be in the range of 90-240 Vrms. There are four rated speed ranges on the control all of the ranges are in Hz; 500-1500, 1000-3000, 2000-6000, and 4000-12000, the typical setting before starting the prime mover the range sits at 2000-6000. If using a magnetic pickup with the control make sure that the speed range switch matches that of whatever the magnetic pickup is sitting at.

It is critical that when unpacking the control you ensure that there is no damage to the control, whether that be dented panels, scratches, loose and broken terminals, or loose and broken terminal screws. 

On the models, the speed and load-sharing portions detect and manage two specific functions; the speed control of the model maintains that the prime mover stays at the proper speed; the load-sharing is used during the simultaneous operation of several generators, and the load-sharing function detects the load carried by the generator and affects the load on all generators provided with the system and must be shared correlatively.