KDYZ-201 Zinc Oxide Surge Arrester Tester is a specialized instrument used to test the electrical performance of zinc oxide surge arresters. This instrument is suitable for live or power-off detection of various voltage levels of zinc oxide surge arresters, so as to timely detect dangerous defects such as insulation moisture and valve plate aging inside the equipment.

The instrument is simple to operate and easy to use. The measurement process is controlled by a microcomputer and can measure the full current, resistive current and its harmonics, power frequency reference voltage and its harmonics, active power and phase difference of zinc oxide lightning arrester. The large screen can display the real waveforms of voltage and current. The instrument uses digital waveform analysis technology and anti-interference methods such as harmonic analysis and digital filtering software to ensure accurate and stable measurement results. It can accurately analyze the content of fundamental waves and 3-7th harmonics, and overcome the influence of phase to phase interference to correctly measure the resistive current of edge phase lightning arresters.

1. The standard configuration of the instrument does not come with a high-energy lithium-ion battery, and can be optionally equipped with a built-in one.
2. 5.7-inch 320 × 240 LCD display, high-speed thermal printer; Graphic and textual display, convenient for on-site personnel to operate and use.
3. Suitable for use in places with live lightning arresters, power outages, or laboratories.
4. Isolation of current and voltage sensors, safe and reliable. Testing A, B, and C three-phase zinc oxide lightning arresters in three stages can be saved as one set of test data.
5. The instrument can perform continuous testing, display voltage and current curves, and quickly print data and curves.
6. Internally configured memory, capable of storing 200 sets of test data in case of power failure.
7. Optional RS232 communication interface, which can be used for testing and exporting test data through the upper computer.
8. Can perform anti-interference calculations to compensate for the deviation of phase A and C currents caused by phase B.
9. High speed sampling frequency, advanced digital signal processing technology, strong anti-interference performance, and extremely high measurement accuracy.
10. The instrument is equipped with high-energy lithium-ion batteries, which are particularly suitable for situations without power supply. The instrument only has weak electricity inside, with a voltage not exceeding 12V, and can also work when charged.
11. Adopting dust-proof, waterproof, and anti-corrosion engineering plastic sealing box, it has a small volume, light weight, and is easy to carry.

1. Working power supply: AC220V/50Hz; Optional high-energy lithium-ion battery, capable of continuous operation for more than 8 hours.
2. Measurement range: Leakage current: 0-10mA (expandable); Voltage: 30-100V (expandable).
3. Measurement accuracy:
Current: Full current>100 μ A, ± 5% reading ± 1 word;
Voltage: When the reference voltage signal is greater than 30V, ± 2% reading ± 1 word;
4. Measurement parameters:
Leakage current full current waveform, fundamental effective value, and peak value.
The fundamental effective value and 3rd, 5th, and 7th effective values of the resistive component of leakage current.
Peak value of resistive component of leakage current: positive peak value Ir+negative peak value Ir -.
Fundamental wave of capacitive current, phase difference between full voltage and full current, effective voltage value, and power consumption of lightning arrester.
5. Voltage reference signal sampling method: 20 meters (expandable)
6. Instrument size: Host 360mm × 260mm × 140mm
7. Instrument weight: Host 5.0kg