UT276A+ UT278A+ Clamp Earth Ground Tester

 UT270 series can quickly and safely measure the grounding system without disconnecting circuit ground lines or the need of auxiliary electrodes. It can measure resistance from 0.01Ω with a resolution of 0.001Ω. UT278A+ can also measure leakage current up to 20A. These clamps'double insulation design makes them durable tools for outdoor work and effective in blocking interference signals from the environment.

Grounding resistance measurement in electricity, telecommunication, meteorology, oilfield, architecture and industrial electric equipment

 Features：

 1. Wide ground loop resistance measurement range (0-1200Ω), which can meet most of the user's measurement requirements;

2.32mm large jaws, can test various grounding levels and equipotential busbars;

3. AC current measurement range 0-20A(UT278A+ only), and can detect leakage current below 300mA, can be measured without disconnection, which is very suitable for system fault diagnosis;

4. User-defined HI/LO alarm limits;

5. Data retention function for obtaining stable readings in places that are difficult to access;

6. Time-saving storage function is convenient for users to consult the test data to draw a table report after measurement;

7. With CAT III 300V safety level

Specifications

    Range

    Resolution

    Accuracy

          Earth Ground Resistance (Ω)

    0.010Ω-0.099Ω

    0.001Ω

    ±(1%+0.01Ω)

          0.1Ω-0.99Ω

    0.01Ω

    ±(1%+0.01Ω)

          1.0Ω-49.9Ω

    0.1Ω

    ±(1%+0.1Ω)

          50.0Ω-99.5Ω

    05Ω

    ±(1.5%+0.5Ω)

          100Ω-199Ω

    1Ω

    ±(2%+1Ω)

          200Ω-395Ω

    5Ω

    ±(5%+5Ω)

          400Ω-590Ω

    10Ω

    ±(10%+10Ω)

          600Ω-880Ω

    20Ω

    ±(20%+20Ω)

          900Ω-1200Ω

    30Ω

    ±(25%+30Ω)

          Leakage current (A)

    0.00mA-9.95mA

    0.01mA

    ±(2.5%+1mA)

          10.0mA-99.0mA

    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)

          10.0A-20.0A

    0.1A

    ±(2.5%+0.5A)

          model

    resistance range

    Current range

    --

          UT276A+

    0-500Ω

    N/A

    --

          UT278A+

    0-1200Ω

    0-20A

    --

 Package contents:

1*Clamp Earth Ground Resistance Tester

2*Test Ring

1*Tool Box

1*Color Box