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UNI-T UT257A Superlarge Caliber Leakage Clamp Meter
Product Name

UNI-T UT257A Superlarge Caliber Leakage Clamp Meter


USD 650.00


UNI-T UT257A Superlarge Caliber Leakage Clamp Meter UT-257A  

UT257A  Superlarge Caliber Leakage Clamp Meter is well designed and manufactured for measuring AC leakage current, current, voltage, adopt the latest CT technology and digital integrated technology. Its large caliber 108mm×148mm can clamp electric cable of 108mm diameter, or 160mm×4mm flat cable and steel earth wires. It has the biggest caliber and widest current range all over the world, particularly suitable for leakage current measurement of cable and transformer earth steel. Full automatically and LCD display, all the data are displayed in the screen, which is very clear and convenient. The meter is widely used in electric power, communication, meteorology, railway, oil field, architecture, measuring, teaching research unit, industrial mining enterprises, etc.


Specification Range Best Accuracy

Model UT257A

Leakage Current and  Current  (A)   Range 0.0mA~499A ±(2%+5)

500A~999A ±(3%+5)

1000A~2999A   ±(4%+5)

Resolution 0.1mA

Test Range AC 0.0mA~3200A

Special Functions

Display Mode Four Digits LCD Display

Clapm Size 108mm×148mm (can clamp electric cable of 108mm diameter, or 160mm×4mm flat cable and steel earth wires)

Auto Range


Data Storage 99Groups

LCD Backlight

Date Hold

Overload Protection OL

Auto Power Off 5Minutes

Low Battery Indication ≤5.2V

Test Model                         Clamp CT, integral mode

General Characteristics

Power Supply 6V DC(LR6×4 alkaline dry batteries)

LCD Size 47mm×28.5mm

Product Color Red + Grey

Product Weight 1.5Kg(Included Batteries)

Product Size 350mm×180mm×55mm                                              

Standard Accessaries Batteries, RS232 Interface Cable, Software CD, Toolbox

Standard Individual Packing Gif Box, English Manual, Warranty Card

Standard Quatity Per Carton 4PCs

Standard Carton Measurement 564mm×428mm×270mm

Standard Carton Gross Weight 23.3Kg                          

package including:RS232 Interface Cable,Software CD,Toolbox



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