Accurately measuring the circuit resistance of switch control equipment in the power system is crucial for ensuring the safe and stable operation of the power grid.HLY-IIIAs a high-precision instrument designed specifically for measuring circuit resistance, the intelligent circuit resistance tester has been widely used in the fields of power, power supply, and high-voltage switch manufacturing due to its excellent performance and convenient operability. This article will provide a detailed introduction to the features and usage instructions of the product.

1、 Product Features

1. High current output, precise measurement

HLY-IIIThe intelligent circuit resistance tester adopts advanced high-frequency switching power supply technology, which can continuously output high current for a long time, and the DC test current can reach up to100Aand200AMeets the recommended values of national standards. The high current output effectively breaks down the oxide film on the switch contact, ensuring the accuracy of the measurement results and overcoming the drawbacks of traditional bridge testing, such as low current and susceptibility to oil film and oxide layer.

2. Strong anti-interference ability

In the complex and ever-changing electromagnetic environment,HLY-IIIThe intelligent circuit resistance tester demonstrates strong anti-interference ability. Even under severe interference conditions, the data displayed on the LCD screen can remain stable±1Within the range of one character, it ensures the stability and repeatability of readings, providing reliable assurance for on-site measurements.

3. Long service life and stable performance

The tester uses high-precision resistance elements, effectively eliminating the influence of environmental temperature on measurement results. Meanwhile, the reasonable use of connectors enhances the anti vibration performance of the instrument and extends its service life. Whether in harsh industrial environments or frequent handling processes, it can maintain stable performance.

4. Convenient to carry and easy to operate

HLY-IIIThe intelligent circuit resistance tester is compact in size（290×280×240mm）Lightweight (only)6.2Kg）Easy to carry to various measurement sites. The LCD display interface is intuitive and clear, and the operation process is simple and easy to understand, even non professionals can quickly get started.

2、 Instructions for use

HLY-IIIThe intelligent circuit resistance tester is designed specifically for measuring the circuit resistance of switch control equipment. When in use, simply connect the tester to the device being tested correctly and select the appropriate testing current（100Aor200A）Press the test button to start measuring. The measurement results will be directly displayed in digital form on the LCD screen, which is convenient and fast. In addition, the tester also has overload protection function to ensure the safety and reliability of the measurement process.

In short,HLY-IIIThe intelligent circuit resistance tester has become an important measurement tool in the power system due to its high current output, strong anti-interference ability, long service life, and portability.