Digital Earth Clamp Tester

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DIGITAL EARTH CLAMP TESTER DECT9

Introduction

Mextech Digital Earth Clamp Tester DECT9

The Mextech DECT9 Digital Earth Clamp Tester is a professional, high-precision instrument designed to measure earth resistance and leakage current without disconnecting the grounding system. Ideal for electrical engineers, maintenance teams, and industrial safety professionals, the DECT9 ensures fast, safe, and reliable earth loop testing even in live systems.

It is the perfect tool for buildings, substations, telecom towers, industrial plants, and maintenance inspections where accuracy and safety are critical.

Digital Earth Clamp Tester is applicable to use in the grounding Resistance measurement of the
Power, Telecommunications, Meteorology, oilfield, construction and the industrial and electrical equipment.
The tester can measure leakage current grounding system and the neutral Current.

Product Description

The Mextech DECT9 Earth Clamp Tester is engineered with advanced clamp-on technology, allowing users to measure ground resistance and leakage current simply by clamping around the grounding conductor—no need to disconnect any earth electrodes.

This makes the DECT9 extremely safe, time-saving, and ideal for complex grounding systems where traditional earth testers are difficult to use. The device features a clear digital display, auto-ranging, high sensitivity, and overload protection for dependable readings in all conditions.

Benefits of Mextech DECT9 Earth Clamp Tester

  • Saves time—no need to disconnect earthing systems

  • Safer operations in live electrical environments

  • Ideal for complex grounding systems where traditional testers fail

  • Accurate & stable measurements even in noisy industrial sites

  • Lightweight and portable for field engineers

  • Reduces downtime for industrial and commercial operations

  • Helps maintain compliance with electrical safety standards

  • Improves preventive maintenance efficiency

Frequently Asked Questions (FAQs)

1. What is an Earth Clamp Tester used for?

It measures earth resistance and leakage current without disconnecting the grounding conductor.

2. Is the Mextech DECT9 safe for live systems?

Yes, clamp-on technology allows safe testing on energized grounding systems.

3. Do I need to disconnect the earth electrode?

No, simply clamp the device around the conductor—ideal for complex grounding systems.

4. Can it measure leakage current?

Yes, the DECT9 accurately detects leakage currents in grounding paths.

5. Where is it commonly used?

Industries, substations, buildings, telecom towers, utilities, and maintenance departments.

6. Is calibration required?

Minimal calibration is needed; the device is designed for long-term accuracy.

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Long Jaw size: 65mm x 32mm. The unique long Jaw is particularly suitable where
grounding is done by flat steel or copper strips.
 Range:0.01Ω to 1000 Ω, leakage current: 0.00mA to 30A
 Maximum Resistance Measurement Resolution 0.001 Ω.
 Display 4 Digits LCD, 47×28.5 mm in length.
 Over range (OL Ω) as well as low range (L0.01 Ω) indication.
 Low bat indication and Data hold facility, Jaw opening Indication, Noise signal
 Double insulation level and also protected from External magnetic as well as Electric field.
 External Magnetic field: <40A/m
 External Magnetic field: <1V/m
 Automatic range selection & Automatic Self Calibration.
 Alarm with measured value
 Single Measuring Time: 0.5 second.
 Data Storage : 99 Groups
 Setting Range of Resistance Alarm Critical Value : 1-199 Ω
 Setting Range of Current Alarm Critical Value : 1-499mA(C type)
 Operating Temperature: -10˚C to 55˚C
 Power: 6 VDC (AA 1.5V x 4)
 Dimensions : 298mm X 90mm X 66mm (Approx.) for long jaw.
 Net Weight : Approx. 1320g for long jaw size.

Ranges and Accuracy at [ (20 ±3˚C) 50% RH ± 10%]

Ranges Resolution Accuracy
0.010 – 0.099Ω 0.001Ω ±(1%+0.01Ω)
0.10 – 0.99Ω 0.01Ω ± (1% + 0.01Ω)
1.0 -49.9Ω 0.01Ω ± (1.0% + 0.1Ω)
50.0 – 99.5Ω 0.5Ω ± (1.5% + 0.5Ω)
100-199Ω 1Ω ± (2% + 1Ω)
200- 395Ω 5Ω ± (5% + 5Ω)
400- 590 Ω 10 Ω ± (10% + 10Ω)
600 – 1000 Ω 20 Ω ± (20% + 20Ω)

 

 

Ranges and Accuracy of current measurement:

Range Resolution Accuracy
0.00mA-9.95mA 0.05mA ±2.5%+1mA
10mA-99mA 0.1mA ±2.5%+5mA
100mA-300mA 1mA ±2.5%+10mA
0.30A-2.99A 0.01A ±2.5%+0.1A
3.0A-9.9A 0.1A ±2.5%+0.3A
10A-30A 0.1A ±2.5%+0.5A

Electrical Installations

  • Residential & commercial buildings

  • Electrical panels & distribution lines

  • Earthing continuity checks

Industrial & Manufacturing Plants

  • Heavy machinery grounding

  • Industrial safety inspections

  • Preventive electrical maintenance

Telecommunications

  • Mobile towers

  • Communication shelters

  • Server room grounding systems

Utility Sector

  • Power distribution networks

  • Substations

  • High-voltage grounding systems

Renewable Energy

  • Solar power plants

  • Wind turbine grounding

  • Battery energy storage systems

Digital earth Clamp Tester is applicable to use in the grounding Resistance measurement of the Power, Telecommunications, Meteorology, oilfield, construction and the industrial and electrical equipment.

      The tester can measure leakage current grounding system and the neutral Current.

Accessories: Carrying Case, Standard Loop Resistance of 5.1Ω, Instruction Manual, Batteries

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