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Evershed & Vignoles "Major Megger"

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Manufacturer Evershed & Vignoles
Model Major Megger
Age Difficult to tell, these were produced from the 1950s to the 1980s.
Service Data No. There is some basic Megger theory here. (From Atkinsons "Telephony" volume 1, 1949)and an applications bookelt here
Condition Fair, working.
Dimensions about 8"x4"x4" (200 x 100 x 100mm)
Comments These instruments are used for testing insulation resistance, mainly in electrical installation work, but also for testing aerial feeders, and the insulation resistance of components (eg transformers and capacitors). This instrument will test with a range of voltages up to 1000V (many insulation testers will only test to 500V). The instrument is self contained, and does not require batteries, power being generated by the crank handle on the side. This instrument was kindly donated by Brian Ormandy.

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Copyright J.Beacon & M.Wroe-Parker 2003 & 2004