MR TOOLS
UT278B Ground Pile Clamp Earth Resistance Tester
Clamp Earth Resistance Tester

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.

Available units in stock

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
Temperature Humidity

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);
CAT Ⅲ 300V, CAT IV 150V; Pollution degree: 2

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