HZ-3510 10A Ground Down Lead Underline Conduction Tester
HZ-3510 10A Ground Down Lead Underline Conduction Tester
I. The use and characteristics of the instrument
The reliable and effective connection between the grounding down conductor of the power equipment 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 moisture 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 conduction test of the down conductor of the grounding device should be carried out once a year.
The HZ-3510 grounding continuity tester is a portable tester with a high degree of automation developed by our company. It is used to measure the continuity 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.
II. Main technical indicators
| Parameter Category | Specification Details |
| Test current options | 1A, 3A, 5A, 10A |
| Measuring range (by test current) | - 10A: 0.8mΩ - 0.8Ω |
| - 5A: 1mΩ - 2Ω | |
| - 3A: 5mΩ - 3Ω | |
| - 1A: 10mΩ - 10Ω | |
| Minimum resolution | 0.1μΩ |
| Accuracy | ±(0.5% + 2 digits) |
| Display | LCD display, resistance display with 4 effective digits |
| Data storage | 1000 groups |
| Working environment | - Ambient temperature: 0℃～40℃ |
| - Relative humidity: <90%RH (no condensation) | |
| Power supply | - Built-in lithium battery |
| - AC 220V±10V, 50Hz±1Hz | |
| - Fuse: 2A | |
| Maximum power consumption | 100W |
| Dimensions | Length 300mm × Width 240mm × Height 140mm |
| Weight | - Instrument: 3.8Kg |
| - Wire box: 8.5Kg |
III. functional characteristics
1. The whole machine is controlled by a high-speed single-chip microcomputer, with a high degree of automation and easy operation.
2. The instrument adopts brand-new power supply technology, with many current gears and wide measuring range.
3. Intelligent power management technology, the instrument always works in the minimum power state, effectively reducing the internal heating of the instrument and saving energy.
4. 320X240 dot matrix ultra-small pixel 65K true color LCD, clear display under strong light
5. The instrument has its own power-down storage, which can store 1000 sets of test data, which can be consulted at any time
6. The instrument comes with lithium battery, built-in charger, integrated design, easy to operate
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