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megger

Grounding considerations for renewable power generation

June 28, 2021 By Lee Teschler

It pays to know the difficulties that can arise when testing and evaluating ground systems for solar panel arrays and wind farms. Jeff Jowett, Megger Industrial wind turbines are typically 280 ft high and getting taller. Their height makes them prime targets for lightning strokes that peak in less than 10 µsec while producing tens […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: FAQ, megger

Clamp meter optimized for photovoltaic system tests

February 18, 2021 By Lee Teschler

A solar clamp meter can measure up to 2,000 Vdc and 1,500 Vac (using PVHV leads) during installation, maintenance, monitoring and testing of photovoltaic systems and standard ac or dc electrical equipment. The DCM1500S can also measure ac and dc current up to 1,500 A and offers a true RMS reading on the ac range […]

Filed Under: Test and Measurement Tips Tagged With: megger

Low-resistance ohm meter excels at tests with long leads

August 3, 2020 By Lee Teschler

A digital low-resistance ohmmeter can deliver reliable results when using long test leads. The DLRO2, a 2-A handheld tester, is a candidate for use in production line testing and industrial applications. This robust and intuitive handheld instrument offers a ‘difference meter’ that allows for quick data comparisons. Applications that require long test leads are not […]

Filed Under: Test and Measurement Tips Tagged With: megger

Finding fiber-optic cable anomalies

June 16, 2020 By Lee Teschler

fiber-optic cable anomalies

Optical fiber is a form of waveguide. The lateral dimension of a waveguide depends upon the wavelength of the signal conveyed. A waveguide is not capable of carrying a wavelength much larger than its diameter. Optical fibers are characterized by their core diameters. In single-mode fiber, the standard core diameter is 9 μm. Standard multi-mode […]

Filed Under: FAQ, Featured, Test and Measurement Tips Tagged With: flukecorporation, megger

Poor earth ground on satellite dishes can put you in orbit

July 22, 2019 By David Herres Leave a Comment

earth ground

In a satellite dish, as sometimes used to receive internet signals transmitted via satellite, the signal transmitted by a satellite transponder is reflected by and propagated through a circular or rectangular tube, which is part of the feedhorn. This tube, like all waveguides, has dimensions based on the wavelength of the signal. Its purpose is […]

Filed Under: Featured, Test and Measurement Tips Tagged With: megger

Measuring signals on transmission lines

July 13, 2018 By David Herres Leave a Comment

Reflections typically arise when a beam of light strikes a polished flat reflective body whose surface is perpendicular to the beam of light. Then the transmitted light minus loss in two-way transit, appears at the source. This is similar but not exactly equivalent to an electrical signal traveling through a conductive medium that has an […]

Filed Under: Featured, Test and Measurement Tips Tagged With: FAQ, megger, tektronix

Better instrumentation for insulation testing

June 21, 2018 By Lee Teschler Leave a Comment

Megohmmeter measurements can now be more accurate, rapid and safer than ever before. JEFF JOWETT, MEGGER A considerable number of electronics personnel working throughout the electrical industry are military trained. And many of them learned on a simple hand-cranked analog meter, properly termed a megohmmeter, or insulation tester. These testers were typically 500-V units that […]

Filed Under: Featured, Test and Measurement Tips Tagged With: FAQ, megger

Handheld power quality analyzer handles debugging tasks

February 28, 2018 By Lee Teschler Leave a Comment

The MPQ1000 handheld power quality analyzer has features which make it a good candidate for troubleshooting, compliance testing and energy audits. Auto CT identification eliminates potential errors caused by wrong CT range settings. The analyzer will automatically identify the CT and verify it is connected correctly. Users can also create their own company standard templates […]

Filed Under: Test and Measurement Tips Tagged With: megger

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