Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of earth resistance clamp meter in China. If you're going to wholesale durable earth resistance clamp meter, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
Application Scenarios
In modern electrical utility systems, telecommunication networks, and industrial facilities, maintaining a low-resistance grounding loop is crucial for personnel safety and lightning protection. Standard earth testing methods often demand circuit interruption, trailing long cables, and manual ground stake insertion, which can be impractical in paved urban settings. it was specifically developed to overcome these field limitations. By placing it around a conductor, inspectors can perform quick preventive maintenance. Using an Earth Resistance Clamp Meter ensures uninterrupted operations for critical equipment across power distribution stations and cellular towers.
Technical Parameters
|
Parameter |
Value/Specification |
|
Model |
NRD100D |
|
Resistance range |
0.01–1000Ω |
|
Resistance accuracy |
±1.5%±0.05Ω(0.01–200Ω);±3%(200–1000Ω) |
|
Resolution |
0.01Ω |
|
Leakage current range |
0.1 mA–30 A |
|
Leakage current accuracy |
±2%±0.1 mA |
|
Jaw opening |
32 mm |
|
Maximum conductor diameter |
30 mm |
|
Data storage |
100 records |
|
Display |
LCD with backlight,4‑digit |
|
Power supply |
4×AA batteries(1.5V) |
|
Battery life |
~1000 hours(without backlight) |
|
Dimensions(W×D×H) |
410×340×190 mm(case included) |
|
Gross weight |
4.8 kg(including accessories) |
|
Operating temperature |
0°C–40°C |
Products Features
Sturdy Jaw & Clamp Mechanism
The Earth Resistance Clamp Meter utilizes high-precision induction coils within its jaw, allowing for non-intrusive measurements around grounding rods and lead wires.
Dual Resistance & Current Testing
Beyond loop ground testing, this measures leakage current to help troubleshoot hidden electrical faults.
Intelligent Data Storage
Equipped with internal memory, it allows operators to log and review measurements directly in the field.
Audible & Visual Alarms
Users can pre-set resistance limits on it to trigger visual indicators and sound alerts whenever measurements exceed safety thresholds.
FAQ
Q: How does the Earth Resistance Clamp Meter measure resistance without ground stakes?
A: It operates by inducing a known voltage into the ground loop via its primary coil and calculating total resistance based on the current detected by its secondary coil.
Q: Is it necessary to power down systems when using Meter?
A: No. The primary benefit of meter is its capability to safely measure ground loop impedance on energized, live systems without disconnecting any grounding leads.
Q: Where can it be used most effectively?
A: It is ideal for multi-grounded systems, including telecommunications base stations, power substation earthing loops, industrial lightning protection grids, and commercial building ground networks.
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