The reliable and effective connection of the equipment's ground down conductor and the ground network is the fundamental guarantee for the safe operation of the equipment. The grounding down conductor is the connection part of the power equipment and the grounding grid. During the long-term operation of the power equipment, the connection may be affected by damp and other factors, and the connection point may be rusted or even broken. The resistance of the grounding grid connection point is increased, which cannot meet the requirements of the electric power regulations, so that there are hidden dangers in the operation of the equipment, and in serious cases, the equipment will lose ground. Therefore, in the "Twenty-Five Key Requirements to Prevent Major Accidents in Electric Power Production", it is clearly stated that the continuity test of the down conductor of the grounding device should be carried out once a year.
The grounding on-resistance tester is a portable tester with a high degree of automation developed by our company. It is used to measure the on-resistance between the ground down conductors of various power equipment in the substation. The instrument is controlled by a high-performance single-chip microcomputer, which can realize the intelligent test process. It has the advantages of small size, convenient carrying, simple operation, high precision, fast test speed, good retestability, and intuitive reading. It is an ideal special instrument that meets the requirements of regulations.
Technical index
1. Output current: automatic, 5A, 1A, 200mA, 40mA, <5mA
2. Resolution: 0.1μΩ
3. Range: 100Ω～100KΩ (<5mA gear)
1Ω～500Ω (40mA gear)
100mΩ～100Ω (200mA gear)
5mΩ～20Ω (1A range)
1mΩ～4Ω (5A gear)
0～100KΩ (automatic gear)
4. Accuracy: 0.2%
5. Working temperature: -10～40℃
6. Working humidity: <80%RH, no condensation
Features
1. The whole machine is controlled by a high-speed single-chip microcomputer, with a high degree of automation and easy operation.
2. Adopt brand-new power supply technology, multiple current gears, wide measurement range, and can automatically select the test current according to the load.
3. Perfect protection function and more reliable performance.
4. The response speed is fast, the measurement data is stable, and the data is automatically refreshed during the test.
5. Intelligent power management technology can effectively reduce the internal heating of the instrument and save energy.
6. The non-power-off clock and non-power-off memory can store data permanently.
7. Thermal printer, high speed and silent.
Mobile version
15388193573
