Clamp Earth Ground Meter UNI-T UT276A+

The UT276A + device from the UNI-T manufacturer is a clamp tester for earthing resistors. On the principle of mutual induction, it can measure earthing resistances without disconnecting earthing conductors and without auxiliary electrodes, in earthing systems with more earthing and with one earthing.
The tester is designed for professional use with resistance to shocks, dust and moisture and is controlled by a microprocessor for accurate identification of ground resistance, including the function of fast filtering of interfering signals, using advanced arithmetic methods. It is designed for measuring earthing systems in power plants, power and telecommunications distribution, oil fields, computer rooms, electromechanical installations and maintenance in industrial plants, wherever electricity is used as an industrial energy source, or where it is necessary to check the earthing resistance of lightning conductors. The device measures the resistance of the ground loop from 0.01 Ω to 500 Ω with a resolution of 0.001 Ω, the measured values ​​are displayed on a four-digit backlit EBTN display (light data on a dark background). The device is powered by four 1.5V alkaline batteries.
Manufactured according to safety regulation IEC61010-1 (CAT Ill 300V, CAT IV 150V, pollution degree 2); IEC61010-031.

Product parameters :

- measuring range of earth loop resistances: 0 to 500Ω
- automatic range adjustment
- resolution 0.001 Ω
- 4-digit EBTN display
- setting of the resistance limit with an audible indication of exceeding
- filtering of interfering signals
- high reliability and durability, double insulation
- automatic calibration, calibration resistance loops
- possibility to store up to 300 sets of measured data
- power supply of 4 AA alkaline batteries, 1.5V
- low battery indication


Technical parameters :

- measurement method:



mutual induction
- measuring range of earth loop resistances:

0 to 500Ω

- resolution and accuracy of measurement:
in the sub-range 0.01 to 0.099 Ω:
0.001Ω /

± (1% + 0.01Ω)
in the sub-range 0.1 to 0.99 Ω:

0.01Ω /

± (1% + 0.01Ω)
in sub-range 1 to 49.9 Ω:

0.1Ω /

± (1% + 0.1Ω)
in the sub-range 50 to 99.5 Ω:

0.5Ω /

± (1.5% + 0.5Ω)
in the sub-range 100 to 199 Ω:

1Ω /

± (2% + 1Ω)
in the sub-range 200 to 395 Ω:

5Ω /

± (5% + 5Ω)
in the sub-range 400 to 590 Ω:

10Ω /

± (10% + 10Ω)

- EBTN display dimensions:



47 x 28.5 mm
- measurement frequency:



2x / sec
- pliers opening:




32 x 55 mm
- interference signal filter:



yes
- visual and audible alarm:



yes
- data storage:




yes, for 300 groups
- display pause (HOLD):



yes
- power supply:




6V (4pcs 1.5 V / AA batteries (LR6))
- consumption:




max. 50mA
- low battery indication:



yes
- automatic shutdown:



yes, after 5 minutes
- sheath insulation resistance:



more than 20MΩ (500V between circuit and package)
- voltage resistance:




3700V / RMS AC (between circuit and package)
- maximum external magnetic field:


<40A / m
- maximum external electric field:


<1V / m
- category:




CAT Ill 300V, CAT IV 150V (IEC61010-1)
- operating ambient temperature and relative humidity:
23 ° C ± 5 ° C, humidity <75%
- tester dimensions L x W x H:



285mm x 85mm x 58mm
- tester weight:




1180g (including batteries)


Contents of individual packaging :

- tester UT276A +:




1 pc
- test (calibration) loop 1Ω and 10Ω:


1 pc
- 1.5 V / AA battery (LR6):



4pcs


Wholesale packaging :

- standard quantity in a carton:



1pc
- standard carton dimensions:



370 x 110 x 300 mm
- total weight of the carton:



2.6 kg

Manufacturer:
https://www.uni-trend.com/