Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of 3-point earth tester in China. If you're going to wholesale durable 3-point earth tester, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
This 3-Point Earth Tester completes earth resistance measurement through classic three-point potential-drop method with two auxiliary ground stakes and matched test leads. It also supports 2-point simplified measurement mode for special site conditions. Built-in high-precision microprocessor and anti-interference filtering circuit effectively suppress on-site power-frequency disturbance.The rugged waterproof dust-proof hard case protects inner circuit against field bump and moisture. We supply complete accessory kit, operation manual, calibration guidance and export-oriented technical documents.
Product Details
| Item | Description |
|---|---|
| Measuring Principle | Three-point fall-of-potential method, optional 2-point simplified test mode |
| Resistance Range | 0.00Ω–2000Ω, auto-ranging |
| Accuracy | ±1.5% rdg ±70 dgt |
| Display | Backlit digital LCD screen, real-time auxiliary electrode resistance display |
| Anti-interference | Built-in filter circuit for power-frequency noise suppression |
| Power Supply | Rechargeable lithium-ion battery, long standby for field survey |
| Housing Protection | Shock-resistant hard plastic case, dust-proof and splash-proof for outdoor work |
| Full Accessories | Auxiliary ground stakes, color-coded test leads, charging adapter, storage hand-case |
| Operation Feature | One-key measurement, prompt for abnormal auxiliary-rod connection |
Product Application
This earth tester serves routine safety inspection for electric power facilities. It verifies grounding performance of distribution transformers, transmission towers and substation grounding grids. In communication industry, it tests grounding condition of signal base stations and equipment rooms.
It is also applicable for lightning-protection inspection of buildings, oil-gas filling stations, chemical plants and solar-power stations. Field technicians can use this instrument for periodic maintenance check, acceptance test of new grounding projects and safety compliance audit. Compact package makes it suitable for field travelling inspection and on-site quick validation.
FAQ
Q: What preparation work should be done before three-point earth resistance test?
A: Drive two auxiliary ground stakes into soil with proper spacing; check integrity and connection status of test leads, ensure good contact between stakes and soil.
Q: What information should be confirmed for quotation of 3-Point Earth Tester?
A: Please confirm required measuring range, whether extra test-lead length is needed, accessory configuration requirement, certification requirement and destination port.
Q: Can this instrument work when soil layer is extremely dry on-site?
A: It can work, but wetting soil around auxiliary stakes is recommended to reduce contact resistance and improve measuring reliability.
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