Megger
(ˈmɛgə(r))
The proprietary name of apparatus designed esp. for measuring electrical insulation resistance. Also megger. Also Meg3, a type of Megger.
| 1903 Trade Marks Jrnl. 2 Sept. 962 Megger... Electric testing apparatus..and scientific instruments..Evershed and Vignoles, Limited,..London,..manufacturers. 1920 Whittaker's Electr. Engineer's Pocket-Bk. (ed. 4) 282 Evershed's Megger. The Megger insulation testing set contains in one case a hand-driven magneto generator and a direct reading moving coil ohmeter. 1923 Nature 13 Jan. 63/2 The ‘Meg’ insulation tester.., a remarkably light and cheap megger running to 10,000 mgo. which should prove a boon to linemen. 1923 [see insulation tester]. 1924 Trade Marks Jrnl. 28 May 1189 Megger... All goods included in class 6 [Machinery of all kinds, and parts of machinery, except agricultural and horticultural machines]. Evershed & Vignoles, Limited,..London,..electrical engineers. 1928 Naval Electr. Manual (Admiralty) I. ix. 204 The ‘Megger’ is a direct-reading ohmmeter for the measurement of high resistances, such as the insulation resistance wiring, etc. 1930 Engineering 31 Jan. 129/3 A demonstration model of their megger earth tester. 1936 Discovery July 220/2 This instrument [sc. the Timber Humidity Meter]..has the appearance of a Megger. 1942 Trade Marks Jrnl. 11 Nov. 468/1 Meg... Electrical apparatus for testing insulation resistance and electrical apparatus for testing earth resistance, each comprising an electric generator and an electric measuring instrument. Evershed & Vignoles Limited,..London,..electrical and mechanical engineers. 1942 Tee Emm (Air Ministry) II. 84 Always remember the importance of megger-testing the insulation. 1950 Engineering 14 Apr. 404/1 The same firm were showing a new pattern of Megger insulation tester. 1957 G. Clark Archæol. & Society (ed. 3) ii. 63 By using a ‘Megger’ Earth Tester, and measuring resistivity at intervals, it is possible to contour degrees of resistivity and so to detect areas of ancient disturbance, in the form of ditches. |