Product Overview & Application Scenarios
Product Overview
The Double Clamp Multifunctional Ground Resistance Tester is an advanced device integrating multiple measurement functions, designed for measuring ground resistance, soil resistivity, DC resistance, ground voltage, and AC current of various grounding systems. It uses a large LCD screen with backlight and microprocessor technology, offering precise and convenient measurements through diverse methods.
Application Scenarios
This tester is widely used in power, communication, construction, meteorology, railway, and highway sectors, including:
Ground resistance measurement of grounding systems in substations and transmission line towers within power systems.
Ground resistance testing of grounding systems in communication base stations and lines.
Resistance measurement of lightning protection and electrical equipment grounding systems in buildings.
Soil resistivity measurement for grounding system design.
Measurement of DC resistance, ground voltage, and AC current to meet various electrical testing needs.
Features & Advantages
Multiple Measurement Methods: Offers traditional ground stake measurement and stakeless double clamp method, catering to different on - site conditions.
High - Precision Measurement: Employs precise 4 - wire, 3 - wire, and simple 2 - wire methods for high accuracy across various resistance ranges.
Large - Jaw Current Clamp Design: Uses double clamp technology for stakeless measurement, especially suitable for difficult ground stake scenarios.
Large LCD Display: Gray - white backlight screen ensures clear data reading even in dim environments.
Multi - Function Measurement: Measures ground resistance, soil resistivity, DC resistance, ground voltage, and AC current, enhancing work efficiency.
Data Storage and Retrieval: Stores 500 data sets and uploads via USB for easy management and analysis.
Auto Power - Off Function: Shuts off after 15 minutes of inactivity to save power and extend battery life.
Overload Protection and Insulation: Ensures safe and reliable measurement with excellent overload protection and insulation properties.
Applicable Conditions
Environmental Conditions: Suitable for temperatures between - 10℃ and 40℃, and humidity below 80%rh. Storage temperature range is - 20℃ to 60℃, with humidity below 70%rh.
Interference Conditions: Avoid environments with interference voltage exceeding 20V and interference current over 2A to ensure measurement accuracy.
Electrode Spacing: For ground resistance measurement, electrode spacing should satisfy a>5d; for soil resistivity measurement, a>20h.
Power Supply Conditions: Use a DC 6V 4.5Ah lead - acid battery with sufficient power to support continuous measurement.
Additional Information
Warranty and After - sales Service: Typically offers a one - year warranty. Non - human - caused issues are repaired or replaced free of charge within the warranty period. After the warranty, paid repair services and technical support are provided.
Data Management: The tester stores 500 data sets and uploads via USB for easy organization, analysis, and archiving, facilitating future reference and comparison.
Communication Function: Equipped with a USB communication cable, it connects to a computer for data transmission and software upgrades, enhancing device intelligence and operability.
Safety Certification: Complies with safety standards such as IEC61010 - 1 (CAT Ⅲ 300V, CAT IV 150V, pollution degree 2), IEC61010 - 031, IEC61557 - 1 (ground resistance), IEC61557 - 5 (soil resistivity), JJG 366 - 2004 (ground resistance meter), and JJG 1054 - 2009 (clamp ground resistance meter), ensuring safe and reliable use.
Maintenance & FAQs
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Technical Specifications
Measurement Functions
|
Parameter |
Measurement Range |
Accuracy |
Resolution |
|
Ground Resistance (Re), DC Resistance (R-) Measurement by 2/3/4-wire method |
0.00Ω~29.99Ω |
±2% rdg±5dgt (Note 1) |
0.01Ω |
|
30.0Ω~299.9Ω |
±2% rdg±3dgt |
0.1Ω |
|
|
300Ω~2999Ω |
±2% rdg±3dgt |
1Ω |
|
|
3.00kΩ~30.00kΩ |
±2% rdg±3dgt |
10Ω |
|
|
Ground Resistance (Re) Measurement by Selection method |
0.00Ω~29.99Ω |
±2% rdg±5dgt (Note 1) |
0.01Ω |
|
30.0Ω~299.9Ω |
±2% rdg±3dgt |
0.1Ω |
|
|
300Ω~3000Ω |
±2% rdg±3dgt |
1Ω |
|
|
Ground Resistance (Re) Measurement by Double Clamp method |
0.01Ω~0.99Ω |
±10% rdg±10dgt |
0.01Ω |
|
1.0Ω~9.9Ω |
±10% rdg±10dgt |
0.1Ω |
|
|
10Ω~100Ω |
±10% rdg±10dgt |
1Ω |
|
|
Soil Resistivity (ρ) |
0.00Ωm~99.99Ωm |
ρ=2πAR (Note 2) |
0.01Ωm |
|
100.0Ωm~999.9Ωm |
0.1Ωm |
||
|
1000Ωm~9999Ωm |
1Ωm |
||
|
10.00kΩm~99.99kΩm |
10Ωm |
||
|
100.0kΩm~999.9kΩm |
100Ωm |
||
|
1000kΩm~9999kΩm |
1kΩm |
||
|
Ground Voltage |
AC 0.00~100.0V |
±2% rdg±3dgt |
0.01V |
|
AC Current |
AC 0.0mA~1000A |
±2% rdg±3dgt |
0.1mA |
Other Parameters:
Environmental Conditions: 23℃±5℃, below 75%rh
Interference Voltage: <20V (avoid)
Interference Current: <2A (avoid)
Electrode Spacing for R Measurement: a>5d
Electrode Spacing for ρ Measurement: a>20h
Power Supply: DC 6V 4.5Ah lead - acid battery, over 100 hours of continuous standby
Display Mode: 4 - digit large LCD with backlight
Measurement Time: AC current ~2 times/sec, ground voltage ~2 times/sec, ground resistance/soil resistivity ~7 seconds/time
Data Storage: 500 sets
Weight: Meter 2430g (with battery), current clamps 936g (2 pieces), test leads 1300g (with simple test leads), auxiliary ground rods 850g (4 pieces)
Operating Conditions: - 10℃–40℃; below 80%rh
Storage Conditions: - 20℃–60℃; below 70%rh
