Technological innovation
HOTLine：0769-2268 1472
Technological innovation
HOTLine：0769-2268 1472
220V AC single-phase motor starting at a few points about the way: First, split-phase start type, lines from the auxiliary starting winding to assist start, its starting torque is not. Operating rate remained roughly constant. Mainly used in electric fans, air-conditioning fan motor, washing machine motor.
The second motor is stationary centrifugal switch is turned on, after the electric starter to start the work involved in capacitance, when the rotor speed reaches nominal 70-80% centrifugal switch will automatically jump, starting capacitor to complete the task, and It is disconnected. Does not participate in the work of the start winding run, and the motor windings to continue to run the operation.
Third, the motor is stationary centrifugal switch is turned on, after the electric starter to start the work involved in capacitance, when the rotor speed reaches nominal 70-80% centrifugal switch will automatically jump, starting capacitor to complete the task, and It is disconnected. The run capacitor in series to start winding the work involved in running. This connection is generally used in air compressors, cutting machines, woodworking machinery and other loads large and unstable place. 838 Electronics
Motors with centrifugal switch, if the motor can not be successful in a very short period of time to start, then the windings will soon burn.
Capacitance values: double-value capacitor motor starting capacitor capacity, small run capacitance, voltage is generally greater than 400V.
Reversible control:With wiring reversing inverted switch, the resistance value is usually the start of this motor winding and the running winding is the same, that is to start the motor winding and running winding diameter and number of coils are exactly the same. General washing machine to get this motor. This reversing control method is simple, not complex switch.
Analyzing start running winding, usually much larger than the running start winding winding DC resistance, it can be measured with a multimeter. Usually run winding DC resistance of a few ohms and start winding DC resistance of ten ohms to tens of ohms.
Is the actual switch and the motor connection diagram, such as the inverted-switch applications without any changes in the three-phase motor, as do single-phase motor commutation is slightly altered, red, blue line access to power, black line is the start winding coil leads, white wire windings run lead, the left is a gray line jumper after access, reversing switchover is by carrying the cross contiguous to switch commutation, this switch is inadequate After the switch is turned off it is still a line is not closed, so there is no certain guarantees in terms of security.
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