Clamp Earth Ground Tester
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 0.01 with a resolution of 0.001. UT278A+ can also measure leakage current up to 20A. These clamps'double insulation design makes them tools for outdoor work and eective in blocking interference signals from the environment.Grounding resistance measurement in electricity, telecommunication, meteorology, oilfield, architecture and industrial electric equipment
1. Wide ground loop resistance measurement range (0-1200), 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;
Specifications
Range
Resolution
Accuracy
Earth Ground Resistance ()
0.010-0.099
0.001
±(1%+0.01)
0.1-0.99
0.01
±(1%+0.01)
1.0-49.9
0.1
±(1%+0.1)
50.0-99.5
05
±(1.5%+0.5)
100-199
1
±(2%+1)
200-395
5
±(5%+5)
400-590
10
±(10%+10)
600-880
20
±(20%+20)
900-1200
30
±(25%+30)
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
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UT276A+
0-500
N/A
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UT278A+
0-1200
0-20A
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