Darui Electric recommends
Zinc Oxide Arrester Live Tester is an important protective facility for power supply lines and equipment. If the arrester in the power system ages, is damaged, or fails, it may cause major faults, resulting in damage to power equipment, line outages, and requiring a large amount of manpower and material resources to handle the fault. Therefore, regular testing of zinc oxide arresters in the line can eliminate potential accidents, ensure the operation of the power system, and improve the quality of power supply.
The tester is suitable for line arresters and zinc oxide arresters of 10kV and below in substations. It can test the leakage current of zinc oxide arresters while the equipment is live, and analyze the resistive current, capacitive current, and 1st, 3rd, 5th, and 7th harmonic currents. It is configured with a high-voltage clamp current transformer and a tablet computer. The high-voltage clamp current transformer can be directly clamped onto the arrester.
Zinc Oxide Arrester Live Tester is an electrical product used to protect various electrical equipment in the power system from overvoltage damage, with good protective performance. In order to verify whether the performance of zinc oxide arresters is normal, we have timely developed the zinc oxide arrester tester, which is an instrument used for on-site and laboratory testing of various related electrical parameters of arresters. It is widely used in on-site online monitoring (live testing) and laboratory (outage maintenance) testing of zinc oxide arresters.
This instrument adopts a high-speed microcomputer-controlled high-precision sampling and processing circuit to ensure data reliability. It can measure the total current, resistive current, third harmonic current, fifth harmonic current, seventh harmonic current, primary voltage, active power, and the phase angle difference between voltage and current of zinc oxide arresters under power frequency voltage, so as to judge the moisture of MOA insulation and the aging degree of valve plates. The voltage measurement signal is transmitted wirelessly, avoiding the trouble of laying long-distance voltage measurement lines due to the long distance between the arrester and the PT. The equipment uses a large-screen color LCD display, with full Chinese menu prompts for operation and printout, making the human-machine exchange function stronger. This instrument has the characteristics of simple wiring, high measurement accuracy, and strong reliability.
Performance characteristics
1. It can measure resistive current either by direct testing method or by harmonic method for indirect testing.
2. Three-phase voltage and three-phase current are collected and displayed simultaneously, achieving three-phase simultaneous measurement.
3. Voltage signals can use wireless, induction, and other methods.
4. The instrument is equipped with a rechargeable battery, calendar clock, and micro printer, and can store 500 sets of measurement data.
5. To facilitate the analysis of resistive current, side-phase compensation can be either prohibited or allowed.
6. To save printing paper, waveform printing can be prohibited.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
