Circuit Breaker Switch Test Instrument

The RDHL-200A Ground Resistance Tester For Loop is a high-precision, digital instrument developed by our company in line with IEC standards. Utilizing high-frequency, high-power constant current switching technology, it accurately measures micro-ohm contact resistance and is ideal for testing switchgear, cables, and welds.

The RDHL-100P Earth Loop Testers is a high-precision device for measuring loop resistance in switchgear, with 0.01 μΩ resolution and advanced features for high-voltage switch maintenance and testing.

The Breaker Analyzer is a special instrument developed by the company to meet the needs of various high-voltage switch operating characteristics tests. The Circuit breaker dynamic tester can accurately measure mechanical dynamic characteristics parameters of low-oil, multi-oil, vacuum, SF6 and other high-voltage circuit breakers of various voltage levels

RDHL-200H contact resistance tester is designed for measuring loop resistance of Switching Control Equipment using High-frequency switching power supply technology and digital circuit technology. Test current of the Tester is DC-100A or DC-200A which is recommended in the national standards. The tester can measure the loop resistance at those values and display results in digital. It is high precision and good stability and can meet most power systems’ requirements in onsite high-voltage switches maintenance and high-voltage switches factory loop resistance measurement. (It’s performances accurately and stably)

The instrument panel is ergonomically designed, in line with operating practices, use high-frequency switching power supplies and digital circuit technology for measuring the contact resistance of the circuit switch control device. Test current is DC 100A. In the case of DC 100A can be directly measured contact resistance test result with a large-screen LCD display, and with data storage, print, time settings and other functions, and another gear 50A for user selection; custom test time, maximum 599S, much larger than the standard requirements of 60S; resolution 0.01μΩ and very stable. Meet the power; the electricity sector on-site high voltage switch maintenance and high-voltage switch factory contact resistance testing requirements.

RDZK-IV Circuit Breaker Vacuum Bottle Tester tests vacuum degree of arc extinguishing chamber without dismantling, using excitation coil and magnetic controlled discharge method. High precision at 10-5 Pa, widely used in power, steel, petrochemical, textile, coal, railway sectors.

The RDGC-8C is a Switch Dynamic Characteristics Test Set accurately measures the mechanical characteristics of high voltage circuit breakers, including less oil, more oil, vacuum, and SF6 types. This tester is essential for dynamic analysis, ensuring the safe and efficient operation of the power system.

Disconnector is the most widely used high voltage switchgear in power system. The operation condition of disconnector is very bad, which is easy to cause mechanical or electrical failure. In particular, the contact part of the touch finger is vulnerable to rain, dust and harmful gases, resulting in poor contact and heating. The spring that provides the pressure of the touch finger will be annealed due to heating, which will reduce the pressure. This will lead to a vicious circle of the touch finger heating, and eventually burn the touch finger and cause an accident.
In view of the current maintenance status of the power generation and supply system, our company has developed an intelligent tester for measuring the contact pressure of the high-voltage disconnector. As long as the sensor of the analog contact of the test clamp is opened at the contact position of each pair of contacts, the contact pressure of the contacts can be displayed and remembered. The HV disconnect testing device effectively solves a difficult problem of measuring finger pressure.

The common method to judge whether the vacuum degree of vacuum tube is deteriorated or not is power frequency withstand voltage method. This method can only judge the interrupter with serious vacuum degree deterioration. However, when the vacuum degrades to 10-2～10-1 PA, although the breakdown voltage does not decrease, the interrupter is not qualified.
RDZK-208 vacuum switch vacuum tester adopts excitation coil and magnetic controlled discharge method to test the vacuum degree of arc extinguishing chamber without dismantling the arc extinguishing chamber. At the same time, the microcomputer is used for synchronous control and data acquisition and processing, so that the field test sensitivity of the vacuum degree of the interrupter reaches 10-5Pa. The outstanding feature of vacuum switch vacuum degree tester adopts excitation coil and data processing method to realize the measurement of vacuum degree without disassembly. Vacuum switch vacuum degree tester has the advantages of convenient use, simple operation, no disassembly, high measurement and test accuracy.
Interrupter Vacuity Tester is a practical testing instrument, which is widely used in electric power, steel, petrochemical, textile, coal, railway and other departments using vacuum switch