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Single-phase motor common fault diagnosis method
2026-02-04
Power supply voltage is normal, power on the motor does not start
1) Power supply wiring open circuit (motor completely silent). Measure the terminals should be no voltage.
2) The main winding is open (the motor is completely silent).
2) The main winding or auxiliary winding is disconnected. Measurement of DC resistance can be used to determine whether the circuit is broken.
3) The centrifugal switch contacts are not closed, so that the auxiliary winding can not be energized to work. Disconnect the connection point of the main winding and auxiliary winding, and then use the method of measuring DC resistance can be determined, or you can use the second part of the method to determine.
4) start capacitor wiring open circuit or internal disconnection. Find the method with the above item 3).
5) For shaded-pole motors, the shaded-pole coil (shorting ring) is open or disconnected. For short-circuit ring set up external can be seen, often through observation can be found, otherwise available in the second part of the method to determine.
6) For series-excited motor, not on the brush or because the brush is too short, stuck, etc. can not be contacted with the commutator, or the brush lead is disconnected, or the armature winding, magnetic field winding internal open circuit.Next page
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02-04
Three-phase asynchronous motor starting mode
Frequency-sensitive resistance starting refers to the series connection of frequency-sensitive resistance in the main circuit when the motor starts, so as to reduce the starting current. Frequency sensitive resistance can smoothly change the starting current, the impact on the power grid is smaller, is more ideal starting method. However, high-power frequency sensitive resistors are used in the form of inductance, so in use will produce a large electromagnetic eddy current, which will reduce the power factor of the power grid.
02-04
Explosion-proof motor energy saving measures
How can explosion-proof motors reduce energy consumption, save power and play a benefit in production? It should be considered comprehensively from the following aspects.
03-03
What are the characteristics of permanent magnet direct drive motors?
Conventional motors rotate at high speeds and produce beeping sounds, and belts can become eccentric if used for too long. The permanent magnet direct drive motor can avoid these troubles and realize 1:1 transmission between equipment and motor, which makes the equipment compact, less noisy, more environmentally friendly and more professional. Direct drives are suitable for applications requiring low speeds, speed regulation and heavy loads. The main benefits of the improvement include quietness, energy saving, stability, strong power and intelligent transformation. So, the direct drive will bring you a better quality of life.
02-04
Short-time high overload permanent magnet synchronous motor electromagnetic heat research
With the development of all-electric technology, electric rudder is widely used in aerospace, military applications and other fields. The rudder system motor requires high power density, high dynamic response and high reliability. Permanent magnet synchronous motors are widely used in rudder servo systems because of their simple structure, high torque density, high power density and high efficiency.
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