
UT278B Ground Pile Clamp Earth Resistance Tester
UT278B Series grounding clamp meter are used for the grounding resistance test. With clamp measurement, 3-wire or 4-wire measurement, voltage/current measurement, data storage/view, alarm, automatic shutdown, and other functions.
Product Details
UT278B Series grounding clamp meter are used for the grounding resistance test. With clamp measurement, 3-wire or 4-wire measurement, voltage/current measurement, data storage/view, alarm, automatic shutdown, and other functions.
Key Features
2.4-inch color LCD display for clear reading
Measure earth resistance, leakage current, load current and grounding voltage
Alarm function for out-of-limit grounding value
USB data transfer for data saving and analysis
Built-in rechargeable lithium battery, no frequent battery replacement
Dual measurement modes: clamp method and 3/4-wire ground pile method
Data storage and recall function
Portable handheld design for field maintenance
ROW certification
FAQ
Q: What is the difference between UT278B, UT278C and UT278D?
A: UT278B: without soil resistivity function; UT278C & UT278D support soil resistivity test, and they have wider resistance ranges.
Q: What parameters can UT278B measure?
A: Earth resistance, leakage current, load current and grounding voltage.
Q: Does UT278B support soil resistivity test?
A: No, soil resistivity function is only for UT278C and UT278D.
Q: Can I export test data?
A: Yes, it supports USB data transfer for data storage and analysis.
Q: Is the battery rechargeable?
A: Yes, built-in rechargeable lithium battery.
Q: Does it have alarm function?
A: Yes, it will trigger an alarm when the measured value exceeds the preset limit.
Specifications
Specifications | |||
Function | Range (UT278B) | Range (UT278C) | Range (UT278D) |
Ground Resistance | 0.00Ω–1500Ω | 0.00Ω–1800Ω | 0.00Ω–2000Ω |
Current (AC) | 0.000A–40A | 0.000A–50A | 0.000A–60A |
Current resolution | 1uA | 1uA | 1uA |
3 or 4-wire method resistance | 0.00Ω–3KΩ | 0.00Ω–30KΩ | 0.00Ω–30KΩ |
Soil Resistivity | N/A | 0.00Ω–9999KΩ | 0.00Ω–9999KΩ |
Ground voltage | 600V | 600V | 600V |
Accuracy Guaranteed | 23℃±5℃,below 75%rh | 23℃±5℃,below 75%rh | 23℃±5℃,below 75%rh |
Features | |||
Power supply | 1, DC 3.7V lithium battery; 2, Real-time display of battery power, reminding to charge in time | ||
Jaw size | 68mm | ||
Screen | 2.4 inch (46*29mm) color LCD | ||
Measurement time | 1 time/sec | ||
USB data upload | The stored data can be uploaded, saved and printed. | ||
Data storage | 500 set | ||
Overload | Overload indication “OL” | ||
Backlight | √ | ||
Alarm function | √ | ||
Auto power off | Around 15 minutes | ||
Power consumption | 750mA MAX | ||
Overload protection | √ | ||
Weight | 975g (including battery) | ||
Operating temperature | -10℃ — 50℃; below 80%RH | ||
Storage temperature | -10℃ — 60℃; below 70%RH | ||
Insulation resistance | >20MΩ (500V between circuit and case) | ||
Withstand voltage | AC 3700V/RMS (between circuit and case) | ||
External magnetic field | <40A/m | ||
External electric field | <1V/m | ||
Applicable safety regulations | IEC61010-1; IEC61010-031; IEC61557-1(Ground resistance); | ||
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