Motor withstand voltage test, when is DC withstand voltage? When is AC Withstand Pressure?

Isn't it possible to do DC withstand voltage for a 10kV high-voltage motor? Why is it necessary to do an AC withstand voltage test?

1966 depends on what unit. If it is a motor manufacturer, it is definitely necessary to do a withstand voltage test when leaving the factory, and the data report of the withstand voltage test is attached to the factory report. If it is a unit of use.

Only preventive pressure tolerance tests are done. The requirements of the preventive pressure resistance posture test are different from those of the factory withstand voltage test, and the degree of pressure increase is also different. The preventive withstand voltage test has lower requirements and lower voltage than the factory withstand voltage test.

10kv, 35kv, 110kv equipment to do withstand voltage test, according to different equipment, there are corresponding withstand voltage test technical specifications and requirements, it should be noted that the withstand voltage test is divided into DC withstand voltage test and AC withstand voltage test. The DC withstand voltage test can damage the equipment. Before purchasing DC withstand voltage test equipment, Xiaofu must first select the type, not the larger the capacity, the better.

It is important to pay attention to the capacity of the motor to choose the test equipment. There has been a precedent of using a unit to purchase large-capacity test equipment and damage the test product.

The motor withstand voltage test is to test the ability of the motor to withstand overvoltage.

The motor withstand voltage test can effectively find the overall defects of the insulation such as moisture and dirt, and can find the local defects of the insulation through the relationship curve between the current and the leakage current.

The withstand voltage test is carried out at a time or more of the voltage of the tested equipment, and from the point of view of thermal breakdown of dielectric loss, it is possible to effectively find local free defects and weaknesses of insulation aging. Since the voltage is mainly divided by capacitance under alternating voltage, it can effectively expose equipment insulation defects.

The AC withstand voltage methods of DC motors are mainly as follows:1Winding AC withstand voltage method:

The winding of the DC motor is connected to the high-voltage AC power supply, and the dielectric strength of the winding is determined by a certain test method to judge whether it meets the requirements. Closed 2Winding DC withstand voltage method:

The winding of the DC motor is connected to the pressure source of the high-quality limb of the Zhiyu state, and the high voltage is increased to make the winding insulation break down, and the breakdown voltage is recorded to judge whether it meets the requirements. 3.Partial Discharge Detection Method:

By detecting the partial discharge phenomenon in the winding of the DC motor, it is judged whether the insulation quality of the winding meets the requirements. 4.Capacitive bridge method:

Using the principle of capacitance bridge, the insulation capacitance value of the DC motor winding is measured to judge whether the insulation quality of the winding meets the requirements. 5.DC Resistance Detection Method:

By detecting the resistance value of the DC motor winding, it is judged whether the insulation quality of the winding meets the requirements.