• Store Locator
  • Schedule a
    Demo
  • Add products to your Toolbox to save it for requesting a quote while you keep browsing for other products to complete your list.

    My
    Toolbox
  • Create a Requisition

    UNI-T UT523A Earth Ground Tester

    # UT523A

    • UT523 Series Earth Resistance Soil Resistivity Tester is specially designed and manufactured for measuring earth resistance, soil resistivity, earth voltage, AC voltage.
    • Adopting the latest digital and micro-processing technology, precise 4-pole, 3-pole and simple 2-pole method for earth resistance measurement.
    • Importing FFT and AFC technology, with a unique function of anti-interference capability and the ability to adapt to the environment.
    UNI-T
    • UNI-T
    • UT523A

    Quantity:

    - +
      ADD TO MY TOOLBOX
    Where to buy this product?
    • UT523 Series Earth Resistance Soil Resistivity Tester is specially designed and manufactured for measuring earth resistance, soil resistivity, earth voltage, AC voltage.
    • Adopting the latest digital and micro-processing technology, precise 4-pole, 3-pole and simple 2-pole method for earth resistance measurement.
    • Importing FFT and AFC technology, with a unique function of anti-interference capability and the ability to adapt to the environment.
    • Consistency of repeat testing, to ensure high precision, high stability and reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth resistance, soil resistivity, earth voltage, AC voltage measurement.
    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)

    Provide us your contact detailsone of our product experts will contact you to discuss your needs or schedule a demonstration at a time that suits

    Product selected: Model #







    *Demonstrations can only be scheduled within the UAE