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Megohmmeter M1101M. A Megohmmeter or insulation resistance tester, is a special type of ohmmeter used to measure the electrical resistance of insulators. [1] Insulating components, for example cable jackets, must be tested for their insulation strength at the time of commissioning and as part of maintenance of high voltage electrical equipment and installations.
[2] An insulation test set; in this pattern, a hand-cranked generator provides the high voltage and the scale is directly calibrated in megohms. Voltage withstand testing is done with a high-voltage source and voltage and current meters. A single instrument called a "pressure test set" or "hipot tester" is often used to perform this test.
Acceptable values of insulation resistance vary depending on circuit purpose, industry, and country. Typically, standards will dictate acceptable values. An insulation resistance test can be used for simple go/no-go testing, or for periodic condition assessment, where routine insulation resistance tests are performed, with the results tracked ...
[4] [5] One of them was for a "hand dynamo", [6] which allowed the generation of voltages high enough to measure resistance in the megohm range and facilitated the construction of the first portable insulation tester. The Megaohm Meter was then named the Megger, and the word became a trademark name, registered on 25 May 1903. [7]
If you’ve got a little change left over from gift-shopping today, use it for lunch. On Dec. 16, McDonald’s announced on its website that it’s selling its Double Cheeseburger for only 50 ...
If the federal government shuts down this weekend, work at numerous publicly funded agencies would slow or stop altogether, while millions of government employees would stop receiving paychecks.
The female common wood-nymph is the active flight partner. [2] The female lays her eggs on or near the host plant. The egg is pale yellow, later turning to a tan color with orange or pink blotches. The caterpillar makes no shelters or nests. [4] It is green or yellowish green with darker green stripes that run the length of the body.
Michigan football coach Sherrone Moore pumped up the Crisler Center crowd on Saturday with a flag-plant gesture, one week after the Wolverines beat Ohio State.. Attending a Wolverines men's ...