The partial discharge detector adopts advanced anti-interference components and a unique gate display circuit, and has four high-frequency elliptical scans, suitable for the type and factory testing of high-voltage products, new product development testing, quantitative testing of partial discharge in motors, transformers, cables, bushings, capacitors, transformers, lightning arresters, switches, and other high-voltage electrical appliances. Can be used on-site by manufacturing plants, research departments, and power departments.

When partial discharge occurs under the test voltage, a pulse current is generated through the coupling capacitor Ck, and the pulse signal is picked up by the input unit. After low-noise preamplifier, filter amplifier selection of the required frequency band, and main discharge amplification, the discharge pulse is displayed on the elliptical scanning baseline of the oscilloscope screen, and also sent to the pulse peak table (logarithmic table) to display its peak value. The time window unit controls the working time of the pulse peak meter during each cycle of the test voltage, and during this period, the display screen is highlighted. The width and position can be changed, further enhancing the anti-interference ability.

Partial discharge tester is a new type of instrument developed and produced. This instrument has the advantages of high sensitivity, large dynamic range of amplifier system, wide range of tested samples, and easy operation. And advanced anti-interference components and unique gate display circuits are adopted, with strong anti-interference ability and four types of high-frequency elliptical scanning, suitable for the type and factory testing of high-voltage products, new product development testing, quantitative testing of partial discharge of motors, transformers, cables, bushings, capacitors, transformers, lightning arresters, switches and other high-voltage electrical appliances. Can be used on-site by manufacturing plants, research departments, and power departments.

Alternative names: Partial Discharge Detector, Partial Discharge Measuring Instrument, Partial Discharge Tester, Partial Discharge Detector, Partial Discharge, Partial Discharge Inspection.

Note:1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. If there is any act of theft or copying, legal responsibility will be pursued
2. To learn more about Huayi products, please enter the product center. Service Hotline:

1. The operation and maintenance of partial discharge testers should be carried out by competent professionals;

2. The voltage at the testing site of the partial discharge tester can reach tens of thousands of volts, and the testing personnel should strictly follow all safety precautions. There should be clear and prominent warning signs in the experimental area, and anyone on site should be aware of the high-pressure zone. Personnel directly involved in measurement should be familiar with all live and high-voltage components in the measurement circuit, while personnel not directly involved in measurement should be isolated outside the testing area. During the experiment and after power on, no one is allowed to enter the high-voltage area;

3. Before the experiment, the operator should master the testing circuit, testing methods, testing steps, and testing objectives;

4. The test site should be clean and tidy, and no unrelated items should be stored. There should be no scattered metal pieces (such as bare copper wire segments, screws, nuts, and other small metal blocks) on the ground in the high-voltage section. The test object, step-up transformer, coupling capacitor, etc. should be kept at an appropriate distance from the surrounding area;

5. The surfaces of the test sample, step-up transformer, coupling capacitor, etc. should be kept dry and clean, as moisture and dirt on the surface can cause partial discharge, leading to measurement abnormalities;

6. The test operators shall connect the wires according to the regulations, and all metal objects in the test area shall be firmly grounded. All possible discharge parts in the test area shall be inspected and improved (such as no sharp or acute angles), and special attention shall be paid to whether all grounding wires are well grounded;

7. Before starting the pressure test, the testing personnel must thoroughly and comprehensively inspect the circuit to avoid misconnection. Special attention should be paid to whether the grounding wire, high-voltage line, and strong current circuit are firmly connectedConnect;

8. When the test is abnormal, the power should be cut off first before further processing;

matters needing attention:

Before the experiment begins to apply pressure, the testing personnel must thoroughly and comprehensively inspect the circuit to avoid misconnection. Check if the grounding wire at the testing instrument is firmly connected to the grounding body. If the connection is not secure or if the wire is kicked off during preparation, it may cause personal and equipment accidents;

2. For connecting wires, the tip should be avoided from being exposed to prevent corona discharge at the tip, especially for partial discharge tests with high voltage levels. If necessary, the high-voltage connecting wire should be thickened and an anti corona cover should be installed to reduce corona discharge caused by high field strength. The shielding cover cannot come into contact with the porcelain skirt of the test sample;

3. In general, during the testing process, the partial discharge of the tested object is much larger than the normal value during withstand voltage and pre boost voltage, and the instrument will inevitably exceed the full scale. To prevent damage to the instrument, the gain coarse adjustment knob of the instrument should be rotated counterclockwise by one or more gears, with the standard of not exceeding the full scale. When the voltage drops to the measurement voltage, rotate the gain coarse adjustment switch clockwise by one or more gears to record the measurement value;