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Coefficient of electromagnet energization rate

1. Power: The electromagnet will generate power when it is energized. The energization rate is a very important parameter, because when the push-pull electromagnet is excited, it will cause the coil to heat up. If the heat is too high, it will burn the coil.Under the same power consumption, the size of the stroke azimuth force of different sizes is different; under the same stroke, the power of different power consumption will be different; different power consumption corresponds to different power-on rates (that is, duty cycle).The general rule is: ⑴Stroke ↑power↓(⑵Power consumption↑power↑. When using the electromagnet, the insurance function should be considered, that is, the test of the strength should be the push-pull electromagnet after a certain energization rate, after the temperature rises smoothly The measured power is the power of the electromagnet. In some cases, the initial power is about 1.5 times the power after the temperature rises smoothly. For example, the power-on rate of the product is very low (how many times a day is turned on and off, and the time is very short) The insurance factor can be reduced to 1.2 times. 2. Current rate: The concept of current rate is shown in the following formula. Electromagnets are usually made into strips or hoof shapes to make the iron core easier to magnetize. In addition, in order to make the electromagnetic Iron is demagnetized immediately after power failure. We often use soft iron or silicon steel materials that demagnetize quickly. Electromagnets are also called lifting electromagnets. They are a new type of practical magnetic lifting equipment with very strong practicability. It is also called bulk lifting electromagnet, which is very suitable for lifting and transporting scattered scrap iron and steel, waste materials, etc.. It means that the on time is divided by the on time. At a period of time (On time + Off time), the short term for the energization rate is the duty cycle. For example: a push-pull electromagnet has a energization time of 1 second and a power failure time of 3 seconds, then its energization rate is 1/(1+3)=25% Pull-type electromagnet adopts high-permeability materials and magnetic circuit structure with tapered fit, so although the product is small in size and light in weight, it is compared with conventional small electromagnets , Its stroke and attractive force are large, because of its high utilization rate of winding space, the coil part is open, and the heat dissipation effect is good. The load cycle or the longest power-on time, and the power and heat dissipation of the push-pull electromagnet determine the push-pull The temperature rise during operation of the type solenoid also determines the energization rate.

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