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| 起源の場所: | 中国・陝西省西安 |
| ブランド名: | XZH TEST |
| 証明: | ISO CE |
| モデル番号: | XHDJ705 |
The XHDJ705 Digital Earth Resistance Tester is specially designed and manufactured for on-site earth resistance measurement. It is widely applied to earth resistance testing in power systems, meteorology, oil fields, construction, lightning protection, industrial electrical equipment and other related fields.
This tester integrates digital and microprocessor technologies, supporting both 3-wire and 2-wire measurement methods for earth resistance. It is equipped with exclusive line resistance calibration function, strong anti-interference capability and excellent environmental adaptability, guaranteeing high precision, high stability and reliability for long-term measurement operations.
| Functions | Earth resistance measurement, earth voltage measurement, low-value resistance measurement |
| Power Supply | DC 9V (6 pieces of 1.5V R14S batteries); continuous standby time up to 300 hours |
| Measurement Modes | 3-wire measurement, 2-wire measurement, average value, maximum/minimum value display |
| Earth Resistance Measurement | Rated current variable pole method, maximum measurement current 3mA, frequency 820Hz |
| Earth Voltage Measurement | Average value rectification; Display mode: 4-digit extra-large LCD screen |
| Earth Resistance Range | 0.01Ω～2000Ω, accuracy ±1% rdg ±3 dg, resolution 0.01Ω |
| Earth Voltage Range | AC 0～600V, accuracy ±1% rdg ±3 dgt, resolution 1V |
| Measurement Speed | Earth voltage: 3 times per second; Earth resistance: 5 seconds per time |
| RS232 Interface | Stored data can be uploaded to a computer for archiving and printing; 400 groups of data storage, flashing "FULL" symbol indicates full memory |
| Operating Temperature & Humidity | -10℃～40℃, below 80%RH (non-condensing) |
- Power Industry: Impedance testing of substation, power plant, and distribution room grounding grids; continuity testing of grounding down conductors; routine operation and maintenance inspections;
- Lightning Protection Engineering: Resistance testing of lightning rods, lightning strips, and grounding devices; final acceptance testing for lightning protection projects;
- Industrial & Mining Facilities: Grounding resistance testing for factory equipment, building grounding systems, tower cranes, and other heavy machinery;
- Telecommunications & Petrochemicals: Grounding grid testing for communication base stations, oil fields, and chemical plant complexes; ensuring electrical safety in hazardous environments involving flammable and explosive materials;
- Testing Agencies: Specialized grounding testing instrumentation for third-party power inspection and lightning protection testing organizations.
