HZDT-10A Conductor Earth Test Equipment Ground Lead Resistance Tester

The electrical integrity of a grounding device refers to the electrical connectivity between the various grounded parts of electrical equipment and the grounding device itself — that is, the DC resistance value, also known as electrical conductivity. A reliable and effective connection between the power equipment grounding lead wire and the ground network is the fundamental guarantee of safe equipment operation.

The grounding lead is the connection point between power equipment and the ground network. During long-term operation, this connection may be affected by moisture and other factors, leading to node corrosion or even fracture. This results in increased resistance at the connection point between the grounding lead and the main grounding network, which cannot meet the requirements of electric power regulations and creates serious safety hazards — potentially causing equipment to operate without proper grounding. Underground grounding electrodes and their connection parts may also corrode or fracture. Therefore, regular electrical integrity testing of grounding devices is essential.

Power industry standard DL/T475-2006, Measurement Guidelines for Characteristic Parameters of Earthing Devices, stipulates that electrical conductivity should be measured by a specialized instrument with a resolution of 1 mΩ and an accuracy of not less than 1.0 level. The HZDT-10A is a portable tester developed according to this standard, featuring a high degree of automation and designed specifically for the electrical integrity testing of grounding devices. Its technical indexes meet or exceed the requirements of relevant standards. The instrument offers simple operation, high precision, fast test speed, good repeatability, and intuitive readings — making it an ideal special instrument that complies with regulatory requirements, greatly facilitating test program development and improving work efficiency.

• Resists high heat, humidity, and salt spray — suitable for tropical island environments
• Operates stably at -40°C, with cold-proof and anti-condensation design
• IEC compliant, with complete calibration certificates provided
• Local support available: spare parts, on-site training, and instrument calibration

• 1 Advanced power supply technology: Adopts the latest power supply technology, outputting 10A current for continuous long-term operation. This overcomes the drawbacks of instantaneous current from pulse power supplies, effectively penetrating contact oxidized films and delivering reliable test results.
• 2 Strong anti-interference ability: Under serious interference conditions, the last data on the LCD screen can be stabilized within ±1 word, ensuring stable readings and good repeatability.
• 3 Long service life: Utilizes high-precision resistors, effectively eliminating the influence of ambient temperature on measurement results. The use of robust connectors enhances anti-vibration performance.
• 4 Simple operation: Just press the measurement key to obtain the measurement result. Results are displayed via LED for intuitive reading and good repeatability.
• 5 Easy to carry: Portable design with small size and light weight. The panel and chassis form a one-piece structure with excellent shock resistance.