company news about Causes of temperature rise of solenoid

The hydraulic solenoid valve electromagnet is designed and manufactured with H-class heat-resistant grade, so there is no need to worry about the service life of the electromagnet in normal operation. The following Dalan hydraulic system manufacturers to take you to a simple understanding of the temperature rise of the DC electromagnet and the temperature rise of the AC electromagnet.

直流螺线管的温升：

Temperature rise of DC solenoid:

直流电磁铁温升的唯一原因是由铜损引起的线圈温升。其程度取决于电流密度及散热状况。一般情况下，直流电磁铁的温升小于交流电磁铁。

The only reason for the temperature rise of DC electromagnet is the coil temperature rise caused by copper loss. The degree depends on the current density and heat dissipation. In general, the temperature rise of DC electromagnet is less than that of AC electromagnet.

交流螺线管的温升：

Temperature rise of AC solenoid:

交流螺线管的温升由铜损及铁损共同引起。取决于以下几点：

The temperature rise of AC solenoid is caused by both copper loss and iron loss. It depends on the following:

1.铁芯涡流损耗与磁滞损耗。

1. Eddy current loss and hysteresis loss.

2.叠层铁芯铆钉间循环电源引起的损耗。

2. Loss caused by circulating power supply between rivets of laminated iron core.

3.短路环引起的损失。

3. Loss caused by short circuit ring.

4.激磁内阻引起线圈电阻损耗。另外与操作频率有关，频率越高，处于启动电流时间越长，温升也会越高。

4. Coil resistance loss caused by excitation internal resistance. In addition, it is related to the operating frequency. The higher the frequency, the longer the time of starting current, the higher the temperature rise.

当电磁换向阀无法正常工作，常见如因外力导致阀芯卡阻无法移动时，电磁铁通电后无法将衔铁吸附至正常位置，磁通路受阻，线圈温度将急剧升高，特别对于AC交流电磁铁，极易短时间内造成线圈烧毁。因此在使用中应注意液压系统的清洁度，避免电磁换向阀故障，延长使用寿命。

When the solenoid valve can not work normally, such as the valve core is blocked and unable to move due to external force, the armature can not be absorbed to the normal position after the electromagnetic iron is electrified, the magnetic path is blocked, and the coil temperature will rise sharply, especially for AC electromagnet, it is easy to cause the coil to burn out in a short time. Therefore, attention should be paid to the cleanliness of the hydraulic system in use, so as to avoid the failure of the solenoid valve and prolong the service life.