Test equipment and test method for tracking resistance and electrical erosion resistance

Abstract

The invention discloses test equipment and a test method for tracking resistance and electrical erosion resistance. The test equipment comprises a control area, an electrical area and a test area, theelectrical area comprises a resistor, a stepping motor and an AC / DC transformer; the voltage transmitter drives the stepping motor to adjust the voltage, and outputs a test voltage through the AC / DCtransformer. The AC / DC transformer, the resistor and the sample are electrically connected to form a test loop; the resistor is provided with a resistor replacement control unit, and the PLC control element is electrically connected with the resistor replacement control unit; the test area is provided with a test device; the test device comprises a water tank, a peristaltic pump, a dropping liquidbracket and a sample bracket, wherein the sample is mounted on the sample bracket, and the dropping liquid bracket is provided with a dropping liquid port; the peristaltic pump has a flow rate control unit; the PLC control element is electrically connected with the flow velocity control unit; and the PLC controls the peristaltic pump to pump the pollution liquid in the water tank, and the pollution liquid drips onto the sample from the liquid dripping opening through the liquid dripping hose. The device effectively ensures that the test result is more effective.

Description

Technical field [0001] The present invention is in the field of high-voltage electrical test, and relates to electrical test equipment tracking and erosion test method from one kind of leakage resistance. Background technique [0002] In the test composite insulators, umbrella cover material resistant to tracking and electrical erosion test has become a standard Test Procedure insulators widely used. By way of applying a voltage in a corrosive dirty liquid to simulate the process due to the discharge local area results in a sustained deterioration and forming a conductive or partially conductive path composite insulating material surface, thereby examine its resistance to electrical corrosion, reliable operation of the composite insulator It has great significance. In this test, the sample mounting method using the inclined surface as the inclined surface of the test method can be as required, any contamination of the liquid flow rate and the adjusted value of the applied voltage...

AI Technical Summary

Problems solved by technology

In this way, the tracking process of the sample will be temporarily interrupted, and the contaminated liquid cannot be ablated and lost in a short period of time. At this time, the contaminated liquid passing through the surface of the sample increases, and it is difficult to return to the state before the power failure by applying pressure again after replacement.

Similarly, when the flow rate of the polluted liquid changes with the increase of the voltage, multiple manual adjustments are also required. During the adjustment process, due to resetting the parameters, the flow rate of the polluted liquid cannot be accurately controlled within a certain period of time.

[0009] Therefore, under the combined influence of the above-mentioned factors, the tracking resistance and electric corrosion test cannot be accurately and continuously effective according to the standard when the tracking voltage test is carried out according to the step-by-step tracking voltage method, and the test results cannot be effectively evaluated. ;It is not easy to install before the test, and it is inconvenient to operate during the test, which affects the test efficiency

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