Earth Loop Testers

• The RDHL-100P Earth Loop Testers is a precision instrument designed for measuring loop resistance in switchgear control equipment. It utilizes advanced high-frequency switching power supply and digital circuitry for accurate readings. The tester features a large LCD screen for displaying test results and offers functions such as data storage, output printing, and time setting. 

• With a resolution of 0.01 μΩ and excellent stability, Earth Loop Testers meets the standards for on-site high-voltage switch maintenance and factory loop resistance testing in power and power supply departments. The RDHL-100P is suitable for high-precision measurements of contact (loop) resistance in high and low voltage switches, as well as DC resistance in cable lines, making it an ideal choice for applications that require both large current and micro-resistance measurements.

1. High-Current Capability: With its advanced switching power supply technology, the RDHL-100P can continuously supply high current for extended periods, eliminating the limitations of instantaneous pulse power supply. This feature is particularly beneficial for breaking down oxide films on switch contacts, leading to more accurate test results.

2. High Precision Measurements: The tester employs dual high-speed 16-bit Σ-Δ AD sampling and the latest digital signal processing technology, achieving a resolution as fine as 0.01μΩ. This level of precision is crucial for accurate resistance measurements.

3. Intelligent Design: The RDHL-100P utilizes a high-performance imported CPU to automatically adjust the measurement range based on the signal size, ensuring consistent test accuracy. Its over-temperature protection circuit automatically stops the output current if the temperature exceeds the set limit, safeguarding the instrument’s safe operation.

4. Quality Components: The RDHL-100P is built with high-quality imported components, and its temperature compensation circuit effectively minimizes the impact of ambient temperature on measurement results. Military-grade connectors enhance its robustness and resistance to vibration.

5. Powerful Functionality: The RDHL-100P offers flexible current selection from 50A to 100A and allows for the arbitrary setting of test time within 5s to 599s. This capability surpasses similar instruments in terms of measurement time control and continuous operation.

6. Communication Capabilities: The RDHL-100P can communicate with computers via a USB data line, enabling test personnel to upload and analyze measurement data for further processing.

For more circuit breaker testing equipment, please click Circuit Breaker Testing Solutions