MEGGER Manuals

The new Megger MIT400 series insulation and continuity testers are designed for electrical testing by utilities, industrial, commercial, and domestic electricians. The range of features makes them ideal for maintenance and service/repair engineers. They replace the well-established BM400 insulation tester range, offering greater functionality, simplified operation, a wider application range, and increased safety.

MFT1500 series Combined Insulation, Loop & RCD Tester is a multifunction tester with the features of PFC measurement, selectable Fault (Touch) voltage 25 V or 50 V, Fault (Touch) voltage display, New Megger lead set, DC test functions for RCDs.

The LT300 high current loop tester offers simple, fast, two-wire operation for high current loop testing across a wide range of frequencies and supply voltages. It has a large, clear display that aids visibility in poor conditions. Two models are available: LT300-EN-00 - with red/green leads LT300-EN-BS - with BS1363 mains plug lead The high current loop test provides fast, accurate and stable results with a resolution to 0.01 Ω on the 20 Ω range. Frequency range Supply frequency is indicated upon connection to the supply. This will automatically set to the measured supply frequency either 16 Hz, 50/60 Hz or 400 Hz. Testing will commence automatically. Loop Impedance measurement: Two loop impedance ranges are provided. 20 Ω - Resolution to 0.01 Ω 200 Ω - Resolution to 0.1 Ω Supply voltage: Operational supply range extends from 50 V to 550 V (400 V @ 16 Hz), with a warning for voltages over 330 V high- lighting accidental phase to phase connections on a nominal 230 V system. Single Phase CATIV 300 V phase to earth, as well as 550 V phase to phase applications (400 V @ 16 Hz) GENERAL The instrument is housed in a rubber armoured case with a built-in cover to protect the display when not in use. The IP54 weatherproof rating provides excellent protection in adverse conditions. The instrument is supplied with either a two wire (red/green) lead set, or a mains plug test lead for access to wall sockets, a certificate of test and a hard carry case.

The new Megger Industrial insulation and continuity testers combine the latest range of measurement techniques with new instrument design to provide a state-of-the-art tester that is compact and comfortable to hold.

DLRO 10 and DLRO 10X set the standards for low resistance measurement. DLRO 10 and DLRO 10X are fully automatic instruments, selecting the most suitable test current up to 10A d.c. to measure resistance from 0.1 µΩ to 2000 Ω, on one of seven ranges. For users who desire more control over the measurement process, DLRO 10X uses a menu system controlled by a two-axis paddle to allow the user to manually select the maximum test current. DLRO 10X also adds real time download of results and on board storage for later download to a PC. Both instruments are built into a strong, lightweight case that is equally at home in the field or in the laboratory. Light enough to be worn around the neck, they are small enough to be taken into areas that were previously too small to access. DLRO 10 uses a large, bright 4 1/2 -digit LED display while DLRO 10X has a large, backlit LCD display. Normally, measurements are made with forward and reverse currents to cancel the effects of any standing voltages across the test sample. The average value is then displayed within 3 seconds, to a basic accuracy of 0.2%. DLRO 10X displays both forward and reverse measurements as well as the average of the two. DLRO 10X allows the user to set high and low pass limits, thereby enabling simple go-no-go testing. At the end of a test DLRO10X will store the test results, as well as any notes relevant to the test. To assist operator safety and ease of use, both in