UT278D Ground Pile Clamp Grounding Resistance Tester
This ground pile clamp grounding resistance tester measures grounding resistance with a 2.4" color screen. It supports clamp / 3&4-wire resistance, AC voltage & current measurement. It comes with data storage, alarm and auto power off. Shockproof, dustproof and moisture-proof, ideal for power, telecom, meteorology, oilfield and factory grounding inspection.
Product Details
This ground pile clamp grounding resistance tester measures grounding resistance with a 2.4" color screen. It supports clamp / 3&4-wire resistance, AC voltage & current measurement. It comes with data storage, alarm and auto power off. Shockproof, dustproof and moisture-proof, ideal for power, telecom, meteorology, oilfield and factory grounding inspection.
Features
2.4 inch color screen design
Ground pile type grounding resistance measurement (three or four wire measurement)
Measurement of clamp shaped grounding resistance
Leakage current and load current measurement
Ground voltage measurement
Beep alarm function (adjustable)
USB data transfer, 500 sets of data storage
Bluetooth data transmission
Built in rechargeable lithium battery
FAQ
Q: What is UNI-T UT278D used for?
A: It is an earth resistance tester for grounding grid, lightning rod, power tower, computer room and gas station grounding testing. It also measures soil resistivity and leakage current.
Q: What are the two measurement methods?
A: Clamp mode: quick test without disconnecting ground wire. 3/4-wire ground pile mode: high-precision single-point grounding measurement.
Q: Does it support data export?
A: Yes, it supports Bluetooth APP and USB connection to PC, save and print test reports.
Q: What is the max measurable current?
A: It can measure AC current up to 60A with 1μA high resolution for leakage current detection.
Q: Is it suitable for outdoor field work?
A: Yes, shockproof, dustproof and moisture-proof structure, stable performance in complex job sites.
Item | Specification |
|---|---|
Model | UT278D |
Clamp Resistance Range | 0.00Ω ~ 2000Ω |
Leakage Current Range | 0.000mA ~ 60A |
Current Resolution | 1μA |
3/4-Wire Resistance Range | 0.00Ω ~ 30kΩ |
Soil Resistivity Range | 0.00Ω ~ 9999kΩ·m |
Ground Voltage Range | 600V |
Bluetooth | √ |
Built-in Rechargeable Battery | √ |
TFT Color Display | √ |
USB Data Upload | √ |
Data Storage | 500 sets |
Real-time Battery Indicator | √ |
Backlight | √ |
Alarm Function | √ |
Low Battery Indication | √ |
Overload Protection | √ |
Functions | Earth resistance test, loop resistance test, AC current test, AC voltage test |
Accuracy Guarantee Condition | 23℃±5℃, ≤75%RH |
Power Supply | DC 3.7V Lithium Battery |
Resistance Resolution | 0.01Ω |
Current Resolution | 0.001mA |
Voltage Resolution | 0.01V |
Jaw Size | 68mm |
Display | 2.4-inch Color LCD |
LCD Dimension | 46mm × 29mm |
Meter Dimension | 273mm × 106mm × 53mm |
Measurement Speed | 1 reading per second |
USB Interface | Upload stored data to PC for saving & printing |
Communication Cable | 1 × USB data cable |
Max Data Storage | 500 sets; "FULL" prompt when storage is full |
Over-range Indication | "OL" symbol for over-range |
Alarm | Audible alarm when reading exceeds threshold |
Battery | Real-time battery display; low battery reminder |
Auto Power Off | Auto power off after 15 minutes of inactivity |
Max Power Consumption | 750mA MAX |
Weight | 975g (including battery) |
Operating Temp & Humidity | -10℃ ~ 50℃, ≤80%RH |
Storage Temp & Humidity | -10℃ ~ 60℃, ≤70%RH |
Insulation Resistance | ≥20MΩ (500V between circuit and housing) |
Withstand Voltage | AC 3700V/rms (circuit to housing) |
External Magnetic Field | <40A/m |
External Electric Field | <1V/m |
Safety Standard | IEC61010-1 (CAT III 300V, CAT IV 150V, Pollution Degree 2); IEC61010-031; IEC61557-1 (Earth Resistance) |
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