Name: UNI-T UT523A Earth Resistance Soil Resistivity Tester
Availability: InStock

UNI-T UT523A Earth Resistance Soil Resistivity Tester:

The UNI-T UT523A Earth Resistance Soil Resistivity Tester is a reliable and efficient instrument designed for accurate measurement of earth resistance and soil resistivity. It features advanced measurement techniques, including 2-pole, 3-pole, and 4-pole testing methods, allowing for flexibility in various applications. The device is equipped with a clear LCD for easy reading, a data hold function, and built-in memory for storing measurement data. Its compact and lightweight design enhances portability, making it suitable for fieldwork in power systems, grounding installations, and lightning protection assessments. The UT523A is an essential tool for ensuring electrical safety and compliance in diverse environments.

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Key Features:

● Auto range

Specifications:

Basic Functions	Range	Best Accuracy
Model		UT523A
Earth resistance	0.00Ω～19.99Ω	±(2%+5)
	20.0Ω～199.9Ω	±(2%+5)
	200Ω～1999Ω	±(2%+5)
	2.00kΩ～19.99kΩ	±(2%+5)
	20.0kΩ～210.0kΩ	±(2%+5)
Soil resistivity	0.00Ωm～99.99Ωm	Decided by measuring precision of R: (ρ=2πaR a:1 m～100m, π=3.141)
	100.0Ωm～999.9Ωm
	1000Ωm～9999Ωm
	10.00kΩm～99.99kΩm
	100.0kΩm～999.9kΩm
	1000kΩm～9000kΩm
Earth voltage	AC 0.00～750V	±(2%+5)
Testing resistance	128Hz/111Hz/105Hz/94Hz(AFC)	√
Features
Measuring method	Earth resistance: rated current pole changing method with Max 20mA measuring current;	√
	soil resistivity: quadrupole method (Wen-Na method );
	earth voltage: average rectifier (between P(S) and ES interfaces)
Short-circuit testing current	AC 30mA max	√
Open-circuit testing voltage	AC 40V max	√
Auto range		√
Distance between electrodes	1m～200m can be set.	√
Testing voltage waveform	Sine wave	√
Line voltage	Measure when the voltage is below 750V AC	√
Low battery indicator	≤7.5V	√
Data hold		√
Alarm function		√
RS232 interface		√
Withstand voltage	AC 3700V/rms(between circuit and case)	√
LCD backlight		√
Data storage	300 groups	√
Auxiliary earth resistance test	0.00KΩ～30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ)	√
Overload protection	Earth resistance measurement: input 280V AC between C(H) and E, P(S) and ES for 3s	√
Interference test	Auto identify interference signals, when interference voltage is higher than 5V, the symbole NOISE is displayed.	√
Measuring time(s)	More than 5000 times (perform short circuit test once, and again after 30s)	√
Insulation resistance	Above 20MΩ (500V between circuit and case)	√
General Characteristics
Power supply	DC 9V (6 Zinc-manganese dry batteries, R14S 1.5V; can continuously standby for 300hrs)
LCD size	128mm×75mm
Product color	Red and grey
Product weight	1443g (including batteries)
Product size	215mm×190mm×95mm
Standard accessories	Standard test lead, simple test lead, batteries, PC software CD, RS232 interface cable
Standard Individual Packing	Tool box, gift box, English manual, warranty card
Standard Quantity Per Carton	4pcs
Standard Carton Measurement	650mm×560mm×300mm
Standard Carton Cross Weight	30kg (including batteries)

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