Megger LT300-HIGH CURRENT LOOP TESTER key features:

  • Single phase and 3 phase testing
  • 16 Hz to 400 Hz operation
  • CATIV 300 V applications
  • Two wire lead set or mains plug leads
  • Tough armored case
  • Built-in cover
  • IP54 weatherproof rating for use in adverse conditions
(1 customer review)

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The Megger LT300 High Current Loop Tester is ideal for CAT IV 300V applications, providing high current loop testing over a wide range of frequencies and voltages. With a resolution of 0.01Ω on the 20Ω range and 0.1Ω on the 200Ω range, the LT300 delivers results quickly, accurately, and steadily. Installations without RCDs are intended for the LT300 loop impedance tester. An enhanced range of applications, such as single phase CAT IV 300V phase to earth and CAT IV 550V phase to phase, are made possible by the broad frequency and voltage ranges. Testing will start automatically as soon as the Megger LT300 loop tester is connected to the supply, and repeat testing is available with a single button press.

For more information on other models, such as the UNI-T UT582+ , click on the relevant link

Megger LT300-HIGH CURRENT LOOP TESTER specifications:

  • Voltage Measurement Range:0V to 550V (400V @ 16Hz)
  • Voltage Accuracy:±5% ± 2V
  •  Loop Test Operating Frequencies :16Hz – 15Hz to 18Hz, 29Hz to 337Hz
    50/60Hz – 40Hz to 70Hz, 125Hz, 100Hz to 142Hz
    400Hz – 260Hz to 498Hz
  • Test Currents:550V: 20Ω – 27A, 200Ω – 2.7A
    230V: 12Ω – 12A, 200Ω – 1.2A
    115V: 20Ω – 6A, 200Ω – 0.6A
    50V: 20Ω – 3A, 200Ω – 0.3A
  • Loop Test Accuracy:0 to 19.99Ω (20Ω range) – ±5% ±0.03Ω
    0 to 199.9Ω (200Ω range) – ±5% ± 0.5Ω
  • Operating Temperature:-10 to 60°C
  • Storage Temperature:-25 to 70°C
  • Humidity:90% RH @ 40°C
  • Battery:8 x AA (LR6) Alkaline or NiMH Rechargable Cells
  • EN61557:Complies with the following parts of EN61577:
    Electrical Safety in Low Voltage Systems up to 1000V AC
    and 1500V DC, Equipment for Testing, Measuring or
    Montioring of Protective Measures:
    Part 1 – General Requirements
    Part 3 – Loop Resistance
  • Safety:Meets the requirements of IEC61010-1 300V CAT IV
    Phase to Earth or 550V Phase to Phase (400V@16Hz)
1 review

1 review for Megger LT300-HIGH CURRENT LOOP TESTER

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  1. Rachel

    Plain and simple

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Megger since 1889 is a leading global premium manufacturer of measurement and testing technology. Megger top priority has always been to make your everyday work easier and safer. As such, insulation testers, micro-ohmmeters, and multimeters are among the long line of Megger inventions, making this brand one of the pioneers in the electrical industry. Megger products combine many years of experience and the valued feedback from our global users with the inventiveness and conscientiousness of our product developers. In Germany, we manufacture at three sites, Aachen, and Baunach near Bamberg and Radeburg near Dresden. Other manufacturing locations are based in Sweden, England, and America.


Data Sheet

Data Sheet