10-06-2017, 07:02 AM
A remote speed controller for an electric motor, the controller comprising a switching unit having three switches. The controller is connected in circuit between an AC voltage supply and windings of a motor. A capacitor pack incorporating two capacitors is connected to the switching unit such that different combinations of the capacitors can be selected by one switch. The selective actuation of the one switch changes the speed of the motor in relation to the values of the capacitors selected. Preferably, the capacitors are located in and form a capacitor pack which is connected by means of
a plug to a socket assembly.
It has the inherent ability of the controller to automatically 60 'adopt' the voltage/frequency of the motor or appliance, making it 'universal' in concept.
-It has provison for connection to a remote sensor which allows the appliance to be switched on or controlled automatically at whatever speed or functional
mode the controller has been set to.
-switch can also be provided to reverse the motor rotation or leave the motor static whilst activating a further device.
In a first position of the switch symbolized by "low speed", only one capacitor is connected; in a second position, symbolized "intermediate speed", only capacitor C2 is connected; and in a third position, "high speed", both capacitors CI
and C2 are connected in parallel between terminals Al and A2. Different combination of capacitors can be used to adjust motor speeds to our requirements.
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