Product Introduction:
The electrical integrity of a grounding device refers to the conductive continuity between various electrical equipment and components of the grounding system, measured as the DC resistance value (also known as conductivity). A reliable and effective connection between the ground down-lead and the grounding grid is essential for the safe operation of electrical equipment.
As the connecting part between electrical equipment and the grounding grid, the down-lead is susceptible to moisture, corrosion, and other factors over long-term operation. This can lead to poor contact, fracture, or increased resistance at the joints, failing to meet the requirements of electrical regulations and creating potential safety hazards. In severe cases, it may even cause grounding failures. Furthermore, underground grounding electrodes and their connections are also prone to corrosion and breakage. Therefore, regular testing of the electrical integrity of grounding equipment is necessary.
According to the electric power industry standard DL/T475-2006, Guidelines for Measurement of Grounding Device Parameters, special measuring instruments should be used for conductivity continuity tests. The instrument shall have a resolution of at least 1 mΩ and an accuracy not lower than class 1.0.
Developed in compliance with this standard, our Grounding Continuity Tester is a portable, highly automated instrument designed specifically for testing the electrical integrity of grounding systems. Its technical performance meets or exceeds the relevant standards.
The tester is easy to operate, offers high precision, fast testing speed, excellent repeatability, and intuitive readings. It is an ideal specialized instrument that fully complies with regulatory requirements, greatly facilitating testing projects and improving work efficiency.
Product Features:
1. Power Supply Technology
Equipped with advanced power supply technology, the device is capable of outputting a constant 10A current for prolonged continuous operation. It overcomes the limitation of impulse-type power supplies that rely on short-duration current pulses and effectively breaks through contact oxide films, delivering reliable and consistent test results.
2. Strong Anti-Interference Performance
Even under severe electromagnetic interference, the last digit of the LCD reading remains stable within ±1 count, ensuring dependable data and excellent repeatability.
3. Long Service Life
All precision resistors are utilized to minimize the impact of ambient temperature on measurement accuracy. Military-grade connectors enhance durability and vibration resistance, ensuring long-term reliability.
4. Simple Operation
With just one press of the measurement button, results are promptly displayed on a 3½-digit LED screen. The interface is intuitive, and measurements show high repeatability.
5. Portable Design
Compact, lightweight, and built with a unified panel and housing structure, the tester offers outstanding portability and shock resistance for easy field use.
Technical parameter
| faixa de medição | 1～1999mΩ |
| Resolução | 1mΩ |
| corrente de teste | DC1A、2A、5A、10A Four fixed current gears |
| precisão de medição | ±(0.5%+2d) |
| raio de medição | 50m |
| modo de exibição | Visor LCD de 3 1/2 Visor LCD |
| modo de trabalho | continuamente |
| fonte de alimentação de trabalho | AC220V±10%、50Hz |
| ambiente de trabalho | temperature：-10℃～40℃ |
| humidity：≤80%RH | |
| Humidade relativa | ≤80% |
| Dimensões | 300×270×200mm3 |
| Peso | 5kg (excluindo acessórios) |
