UNI-T UT276A+ clamp-on earth meter

This product comes with a 3-year warranty. The UT276A+ device from UNI-T is a clamp-on earth resistance tester. Based on the principle of mutual induction, it can measure grounding resistances without disconnecting the grounding conductors and without auxiliary electrodes, in grounding systems with multiple grounding and single grounding.
The tester is designed for professional use with resistance to shock, dust, and moisture, and is controlled by a microprocessor for accurate ground resistance identification, including through rapid interference filtering. It is designed for measuring grounding systems in power plants, power distribution and telecommunications, oil fields, computer rooms, electromechanical installations and maintenance in industrial facilities, wherever electricity is used as an industrial energy source, or where it is necessary to check the grounding resistance of the lightning rod. The device measures ground loop resistance from 0.01 Ω to 500 Ω with a resolution of 0.001 Ω. The measured values are displayed on a four-digit EBTN display with backlighting (data appears on a dark background). The device is powered by four 1.5V alkaline batteries.
Manufactured in accordance with safety regulations IEC61010-1 (CAT III 300V, CAT IV 150V, pollution degree 2); IEC61010-031.

Product parameters:

– Ground loop resistance measurement range: 0 to 500Ω
– automatic interval adjustment
– resolution 0.001 Ω
– 4-digit EBTN display
– by setting an audible resistance limit
– with audible exceeding of the resistance limit by interfering signals
– High reliability and durability, double insulation
– automatic calibration, calibration resistance loops
– possibility to store up to 300 sets of measured data
– powered by 4 AA alkaline batteries, 1.5V
– low battery indicator

technical parameter method: mutual induction
– Earth loop resistance measurement range: 0 to 500Ω

– measurement resolution and accuracy:
in the sub-range 0.01 to 0.099 Ω: 0.001Ω / ± (1% + 0.01Ω)

within the range below 0.01Ω) 0.01Ω / ± (1% + 0.01Ω)
in the secondary range from 1 to 49.9 Ω: 0.1Ω / ± (1% + 0.1Ω)
in the secondary range from 50 to 99.5 Ω: 0.5Ω / ± (1.5% + 0.1Ω at 901Ω)
in the secondary range 50 to 99.5 Ω: 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)

display dimensions: 8-4 TN x 5Ω)

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
V (power supply 4 pcs: 16 V.) (LR6))
– consumption: max. 50mA
– low battery indicator: yes
– automatic shut-off: yes, after 5 minutes
– insulation resistance of the sheath: more than 20MΩ (500V between circuit and package)
– voltage resistance: 3700V / RMS AC (between circuit and package)
m-maximum 40 mA external magnetic field
field: <1V/m
– Category: CAT III 300V, CAT IV 150V (IEC61010-1)
– Ambient operating temperature and relative humidity: 23°C ± 5°C, humidity <75%
– tester dimensions L x W x H: 285 mm x 8 mm x 85 mm x 8 mm 1180 g (including batteries)

Contents of individual packaging:

– UT276A tester +: 1 piece
– 1Ω and 10Ω loop test (calibration): 1 pc
– 1.5 V / AA battery (LR6): 4 pcs. :

– standard quantity in a box: 1 piece
– standard box dimensions: 370 x 110 x 300 mm
– total weight of the box: 2.6 kg

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