HV Switch Tester

Contact Resistance Tester is made and contained of advanced high-power switching power supply technology and advanced electronic circuit. It is the dedicated tester for the resistance of high and low switch, cable wire and welding joint. Its current uses national standard GB736 recommended standard DC, can measure the resistance value of being tested object under standard current status. The tester is small dimension, light weight, strong anti-interference, high precision, easy operation and perfect function protection and so on.

HZ5375 5000A Primary Current Injection Tester (referred to as upconverter), our own self-developed test equipment, it combines the advantages of similar products at home and abroad, using CNC technology, strong anti-interference ability, compared with the previous generation upconverter Because of the use of low-power, large-capacity self-coupling voltage regulator and high permeability iron core converter, it has the advantages of large output power, small size and light weight. Mainly used in primary bus protection and various current transformer transformation ratio test projects, it is widely used in electric power, railway, petrochemical, metallurgy and mining companies such as scientific research, production and electrical test site.

A Primary Current Injection Tester is an essential tool for electrical engineers and technicians. It plays a vital role in maintaining the safety and reliability of electrical systems by ensuring that protective devices function correctly under fault conditions.The  HZ5376 High Current Generator (hereinafter referred to as the current booster) is a testing equipment independently developed by our company.

A Primary Current Injection Tester is a specialized device used in the electrical engineering field to test and verify the performance of protective relays, circuit breakers, and other electrical equipment. This testing method involves injecting a high current directly into the primary circuit of the device under test, allowing engineers to assess its operational integrity and response to fault conditions.

The hand-held contact resistance tester is an innovative product designed for ease of use. It features a compact, portable design, with hand-held operation and battery power supply, making it easy to carry and use in various locations.This device is primarily used for measuring contact resistance and other low resistance values in switch contacts. It offers fast testing speed and high accuracy, making it an ideal tool for precise measurements.

The hand-held Loop Resistance Tester is a high-precision, digital switch detection instrument developed by our company in accordance with the IEC standard and the latest electric power industry standard of the People's Republic of China, DL/T845.4-2004.This instrument utilizes high-frequency, high-power constant current switching power supply technology, enabling it to measure micro-ohm level contact resistance. It is widely used for measuring contact resistance in switches, electrical appliances, circuit resistance, cable wires, and welding line connections.
The instrument offers accurate and stable measurement data, making it ideal for use in high-voltage switch maintenance and circuit resistance testing, as required by power and electric supply departments. The output current and measured resistance are displayed simultaneously on a 7-inch high-brightness color LCD touch screen.Additionally, the measurement results can be output to a printer or stored on a USB drive. The power-off storage function ensures that data can be queried and retrieved at any time.

The design team of the high voltage switch circuit comprehensive tester has many years of field experience and a deep understanding of the actual working conditions. Through careful hardware design and software optimization, they have developed a targeted solution. While retaining the capability to perform individual tests, the system introduces an innovative intelligent testing mode. This mode not only meets the testing needs on-site but also significantly simplifies wiring and operation. Additionally, it features real-time voice prompts and wireless control of intelligent devices, making the testing process more streamlined, convenient, and efficient.

The HZ-109S Primary Current Injection Tester adopts ARM chip technology for controlling output and a high-capacity toroidal transformer, and is equipped with an LCD display meter. It can simultaneously display primary current, secondary current, turn ratio, and the actuation time of the stopwatch connection (electric potential). The product features a sleek design, large output capacity, compact size, and lightweight construction, with an external aluminum alloy case and PC panel. It is primarily suited for CT turn ratio and contact resistance testing in power systems, as well as other applications requiring high current testing.

Adopted technology of ARM chip controlling output and toroidal transformer with high-capacity and equipped with LCD display meter, the HZ-109S2 Primary Current Injection Tester could simultaneously display primary current, secondary current and turn ratio. The product possesses the characteristics of nice appearance, large output capacity, small size, light weight and so on with external aluminum alloy case and PC panel. It is mainly suited for CT turn ratio and contact resistance tests of power system and other occasions needed high current test.

The HZ-5371L High Current Generator (referred to as the "current riser") is a test device developed by our company. It combines the advantages of similar products both domestically and internationally. Utilizing numerical control technology, it offers strong anti-interference capabilities. Compared to the previous generation of current risers, it features low power consumption, a large-capacity auto-regulator, and a high-permeability core converter, resulting in high output power, compact size, and lightweight construction.

The High Voltage Switch Dynamic Characteristic Tester is a specialized instrument used to measure the dynamic characteristics of high-voltage switches, such as circuit breakers, disconnectors, and load switches. These switches are critical components in power systems, and testing their performance is essential to ensure their reliability and efficiency in electrical distribution networks.

The HZ-5200 Contact Resistance Instrument is a high-precision digital switch detection device carefully developed in accordance with the IEC standard and the latest Chinese electric power execution standard DL/T 845.4-2004. The instrument uses high-frequency, high-power constant current switching power supply technology to measure micro-ohm contact resistance.

HZ-KG7 Vacuum Switch Vacuum Tester also used computer for synchronous control, data acquisition and processing, and the sensitivity of HZ-KG7 Vacuum Switch Vacuum Tester in the field test of the vacuum interrupter arc chamber is 10^-5Pa. The most prominent feature of this instrument (HZ-KG7 vacuum tester) is to use the new excitation coils and data processing methods to achieve the non-demolition measurement of vacuum. The instrument is practical, easy to use, easy to operate, high precision measurement without disassembly, widely used in electric power, steel, petrochemical, textile, coal, railways, and other trades using the vacuum switch.