HD858Ground Wire Group DC Resistance Tester
Our company has developed the "Ground Wire Group DC Resistance Tester" in accordance with the "Technical Standards for Portable Short-Circuit Grounding Wires" and the "Preventive Test Procedures for Electrical Tools" issued and implemented by the power company, providing services for the completion of preventive tests on products in the power system.
Features
1. The entire unit is controlled by a high-speed microcontroller, featuring a high degree of automation and simple operation.
2. The instrument adopts new power supply technology, with stable output current, high output voltage, fast measurement speed, and wide range, suitable for testing various portable short-circuit grounding wires and personal protective grounding wires.
3. The instrument comes with a built-in clock and perpetual calendar, capable of storing 20 sets of test data for convenient customer inquiry at any time.
4. Comprehensive protection functions: automatic protection after internal power supply overheating to effectively prevent damage, and a voltage line reverse connection warning to prevent inaccurate test data due to incorrect wiring.
5. The instrument uses a 320X240 dot matrix LCD screen with all operations displayed in Chinese for user convenience.
6. The instrument comes with a built-in thermal printer for real-time printing of test data.
7. Intelligent power management technology ensures the instrument always operates at optimal power, effectively reducing internal heat generation and saving energy.
Technical Specifications
1. Output current: 30A, 40A, 50A
2. Output voltage: ≥DC10V
3. Resolution: 0.1μΩ
4. 300μΩ-300mΩ (30A range)
200μΩ-250mΩ (40A range)
100μΩ-200mΩ (50A range)
5. Accuracy: 5‰±3 digits
6. Operating temperature: -20～40℃
7. Operating humidity: <80%RH, non-condensing
8. Power supply: AC220V±10%, 50HZ
