YYyy series single-phase asynchronous motors

Single-phase motor capacitors short circuit what will happen? Motor fails to start, or start trouble. Because the single-phase motor single-phase current flowing can not produce a rotating magnetic field, the need for split-phase capacitor is intended to enable two winding currents near 90 ° phase difference, to produce a rotating magnetic field. Can single-phase motor with three-phase power, how to calculate how much capacitance? Speaking from the principle should be possible, in fact it is difficult to operate on. If the single-phase three-phase electric motors available "; primary windings A phase"; "; deputy windings B phase";., Public termination zero line due to less secondary winding coil voltage is low, it should be a series resistance voltage. Motor to turn up, you have to produce a rotating magnetic field. Three-phase alternating current through the coil intersection of 120 degrees can produce a rotating magnetic field. Phase alternating current through a coil is unable to produce a rotating magnetic field. So single-phase motor to start, you have to produce a rotating magnetic field, there are a number of ways, one of which is split-phase single-phase motors, this motor has two sets of coils vertically placed, they are winding and start winding run, when to They pass with 90 degrees (90 degrees is not necessarily, as long as there is a certain phase on the line) of the two-phase alternating current, it will produce a rotating magnetic field. The motor can be started. How to calculate how much capacitance? Based on the above principle known: as long as the two windings of phase alternating current on the line, so the capacitor start winding no specific requirements, but the greater the capacitance, AC phase two windings greater (closer to 90 degrees) the greater the starting torque, the easier start. Typically capacitor start (only when you start the access, turn it off) of 100 to 150μF, capacitor run (both access and back up the starting rotation) is 1 to 2μF. Fourth, the old reasons to burn a single-phase motor capacitor? To see whether matching capacitance (too big too small is not good) starting torque is too large, check the mechanical parts, increase start capacitor inspection centrifugal switch position and contacts (centrifugal switches are not up and running for some time after the motor (10s- -30s) in the open, you can take a look at the big changes in current meter, ammeter range to choose the right) to check the winding resistance is normal heavy load (overload) caused by frequent starts. 8. Check motor capacitor quality problems after the operation amount of voltage across the capacitor, to see if more than its rated voltage. General Motor is 250v 110v capacitors, 220v 370v motor using a capacitor (foreign) / 450v is. YY series single-phase induction motor (single-phase motors, single-phase motors Zhejiang Taizhou single-phase motors, single-phase motors, Guangdong, Fujian and single-phase motors, single-phase motors Shanghai), commonly known as condenser motor, characterized by low starting torque, high power factor . Demanding occasion for starting places. Cast iron housing motors have YY series capacitor start motor, aluminum housing has MY series capacitor start motor. And capacitor start motor, compared with a bigger power base, due to the high power factor, low operating costs, but because of the condenser motor windings and capacitors to pay long-term work on the high voltage requirements capacitors with high power factor and efficiency, small size, light weight, good performance, low noise, easy maintenance. YY series single-phase asynchronous motor used in general machinery and equipment without special requirements, such as agricultural machinery, food machinery, fans, pumps, machine tools, agitator, air compressor and so on. Protection class: IP44 / IP54 / IP55 Cooling: IC0141 Insulation class: B / F Rated frequency: 50 / 60Hz Rated voltage: 110/220/230 / 240V Duty: S1