ZLJD-20A Ground Down Conductor Continuity Resistance Tester



Introduction

ZLJD-20A Ground Down Conductor Continuity Resistance Tester is a highly automated portable tester developed by our company, used to measure the continuity resistance between the grounding down conductors of various power equipment in substations. The instrument is controlled by a high-performance microcontroller, enabling intelligent testing process. It features small size, portability, simple operation, high accuracy, fast testing speed, good repeatability, and intuitive readings, making it an ideal specialized instrument that meets the requirements of regulations.





Detailed Product Introduction




Overview of ZLJD-20A Ground Down Conductor Continuity Resistance Tester

The reliable and effective connection between the grounding down conductors of power equipment and the grounding grid is the fundamental guarantee for the safe operation of equipment. The grounding down conductor is the connecting part between the power equipment and the grounding grid. During long-term operation of power equipment, the connection point may be affected by factors such as moisture, leading to corrosion or even breakage of the joint, which increases the resistance at the connection point between the grounding down conductor and the main grounding grid, thus failing to meet the requirements of power regulations, posing safety hazards during operation, and in severe cases, causing equipment to operate without proper grounding. Therefore, in the "Twenty-Five Key Requirements for Preventing Major Accidents in Power Production," it is explicitly stated that the continuity test of grounding device down conductors should be carried out once a year.

The Ground Continuity Resistance Tester is a highly automated portable tester developed by our company, used to measure the continuity resistance between the grounding down conductors of various power equipment in substations. The instrument is controlled by a high-performance microcontroller, enabling intelligent testing process. It features small size, portability, simple operation, high accuracy, fast testing speed, good repeatability, and intuitive readings, making it an ideal specialized instrument that meets the requirements of regulations.

ZLJD-20A Ground Down Conductor Continuity Resistance Tester Functional Features

1. The whole machine is controlled by a high-speed microcontroller, with high automation and simple operation.
2. The instrument adopts new power supply technology, with multiple current ranges and wide measurement range.
3. Comprehensive protection functions reliably protect the instrument from back EMF impacts, ensuring higher reliability.
4. Audible discharge alarm with clear discharge indication reduces misoperation.
5. Fast response speed, allowing direct switching of on-load tap changers during measurement, with automatic data refresh.
6. Intelligent power management technology reduces internal heat generation and saves energy.
7. The instrument has a built-in non-volatile clock.
8. The instrument has a built-in non-volatile memory to permanently save data.

ZLJD-20A Ground Down Conductor Continuity Resistance Tester Technical Specifications

1. Output current: 2.5A, 5A, 10A, 20A
2. Range: 100μΩ～1Ω (20A)
                  500μΩ～2Ω (10A)
                      1mΩ～4Ω (5A)
                    2mΩ～8Ω (2.5A)
3. Accuracy: 0.2%
4. Resolution: 0.1μΩ
5. Operating temperature: 0～40℃
6. Ambient humidity: ≤90%RH, no condensation
7. Power supply: AC220V±10%, 50HZ±1HZ
8. Net weight: 13KG
9. Dimensions: 440mm*240mm*390mm