How to use a partial discharge tester and what precautions should be taken?

发布时间：2021-09-30

We’ve already provided a detailed overview of some key information about partial discharge testers, so by now you should at least be familiar with their applications and advantages. Today, we’ll focus on how to use these instruments and the precautions you should take. If you’d like to learn more, keep reading—hopefully this will be helpful.

If you regularly use a partial discharge (PD) tester in your work, it’s important to familiarize yourself with its operating procedures beforehand. Before starting, ensure the instrument is properly powered on and set the time-base mode to “ellipse.” Next, connect the calibration pulse generator correctly and initiate the calibration process. Once the PD tester has completed calibration, disconnect the calibration cable and remove the pulse generator. With these steps completed, proceed to connect the high‑voltage test circuit power supply, activate the zero‑mark switch, and gradually increase the test voltage. On the display, two zero‑mark pulses should appear on the ellipse; the phase difference between them should be approximately 180 degrees. Then, rotate the “ellipse rotation” knob to a position that facilitates observation of the discharge—typically with the zero‑mark pulses located at the upper left and lower right of the ellipse. After establishing continuous discharge, if the measured discharge quantity exceeds the specified threshold, the corresponding voltage represents the partial discharge inception voltage. You can then continue raising the voltage. However, we would like to emphasize that as long as you follow these correct procedures, no issues should arise.

Now that you’ve learned how to use the partial discharge tester, let’s review the important precautions. After all, this is a crucial aspect. Staff should be aware that when operating this instrument, and after using the calibration pulse generator, the pulse generator must be removed before increasing the voltage. As for various types of interference that may arise during testing, if the interference is phase‑locked, it can be filtered out using the time‑window function. If you need to stop the test midway, first press the “Stop” or “Exit” button to halt the measurement. The partial discharge tester displays the discharge quantity on a digital meter; however, once overload occurs, measurement accuracy cannot be guaranteed. In such cases, switch the coarse gain control to the low‑gain setting. These are all essential points—please read them carefully so you’ll know how to operate the device correctly in future applications. If you have any further questions, feel free to contact us. As the manufacturer, we are thoroughly familiar with the instrument’s key specifications. Please call us for more information.

Having reviewed the information above, we’ve now seen the proper methods for using partial discharge testers and the key points to keep in mind. If you have related needs, feel free to take a look—this might just pique your interest. That’s all for today’s key takeaways; if you have any questions, don’t hesitate to reach out to us.

Partial discharge tester

Let’s explore the system principles of partial discharge detectors.

By reorganizing Xidian, Xuji, and Pinggao, China will give birth to a power‑equipment group with revenues in the hundreds of billions.

Let’s explore the system principles of partial discharge detectors.

By reorganizing Xidian, Xuji, and Pinggao, China will give birth to a power‑equipment group with revenues in the hundreds of billions.