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    Insulation Resistance Tester, 500V/1000V/2500V

    $295.46
    Insulation resistance tester or Megohmmeter has selectable test voltages of 500V, 1kV and 2.5kV, and measuring insulation resistance up to 20.0 GΩ. Reliable megger is also capable of measuring AC Voltage, low resistance, PI and DAR, with large backlit LCD display, high accuracy, good stability and favorable price.
    SKU: ATO-IRT-UT502A
    Free Shipping Worldwide
    Delivery date: 6-20 days

    The megger insulation resistance tester performs tests on voltages of 500V, 1000V and 2500V, and supports resistance measurement range up to 20.0 GΩ, an ideal tool for electric maintenance, testing and inspection. It can be used to measure the insulation resistance of electrical equipment and household appliances like transformers, electric motors, cables, switches, etc.

    Specification

    Model ATO-IRT-UT502A
    Insulation Resistance (Ω) Test voltage/accuracy 500V/1000V/2500V 0% ~ 10%
    Measurement range/accuracy 500V 0.00 MΩ ~ 99.9 MΩ ±(3%+5)
    100 MΩ ~ 5.0 GΩ ±(5%+5)
    1000V 0.00 MΩ ~ 99.9 MΩ ±(3%+5)
    100 MΩ ~ 5.0 GΩ ±(5%+5)
    2500V 0.00 MΩ ~ 99.9 MΩ ±(3%+5)
    100 MΩ ~ 9.9 GΩ ±(5%+5)
    10.0 GΩ ~ 20.0 GΩ ±(10%+5)
    Load current 500V (R=500kΩ) 1mA 0% ~ 10% 
    1000V (R=1MΩ) 1mA 0% ~ 10% 
    2500V (R=1MΩ) 1mA 0% ~ 10%
    Short-circuit current <2mA
    Low Resistance (Ω) Range/accuracy 0.01 Ω ~ 200 Ω (about 5.0V/>200mA) ±(2%+3)
    AC Voltage (V) Test range/accuracy 30V ~ 600V (50Hz/60Hz) ±(2%+3)
    Features Display 1999 count
    DAR (60s/15s and 60s/30s) Yes
    PI Yes
    Auto ranging Yes
    Low battery indication Yes
    LCD backlight Yes
    Light alarm Yes
    Buzzer alarm Yes
    High voltage indication Yes
    Over load indication Yes
    Auto discharge Yes
    Test voltage secondary display Yes
    10 MΩ internal resistance test Yes
    General Power supply 1.5V battery (LR6) x 6
    Display size 70.6mm x 34mm
    Working condition 0℃ ~ 35℃, ≤75%RH
    Altitude ≤2000m
    Storage condition -20℃ ~ 60℃, ≤80%RH
    Product weight 500g
    Product size 150mm x 100mm x 71mm
    Standard accessories Batteries, test leads, alligator clips, gallus

    Insulation Resistance Test Wiring Diagram

    UT502A Megger Insulation Resistance Test

    Tips: What is insulation resistance?

    Insulation resistance is the DC resistance of the insulation under the specified conditions, that is, the DC voltage is applied to the dielectric, after a certain period of polarization, the resistance corresponding to the leakage current flowing through the dielectric is called insulation resistance. It is the most basic insulation index of electrical equipment and electrical circuit.

    Measurement of insulation resistance

    The insulation resistance tester, also called Megohmeter or Megger, is used to measure the insulation resistance of electrical equipment and electrical circuit.

    • Connect the lines according to the Megohmmeter test method. The connection of the measuring wires to the device is more suitable for magnetic connector or clamp, and the connection point must be free of rust.
    • It is appropriate to use the measuring instrument for 500V / 500 MΩ Megger (where the error is not greater than 10%). Turn the handle of the insulation tester to reach the specified speed for 10 seconds. The stable indicated resistance value of the megohmmeter is the insulation resistance value of the insulation joint (flange), which is required to be greater than 10 megohm.

    Factors affecting insulation resistance

    1. Ambient temperature and humidity, the insulation resistance value of general materials decreases with the increase of ambient temperature and humidity.
    2. Test time
    3. Cable itself. When the cable is heated and damp, insulation material will be aging. The insulation resistance is reduced.
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