Online from: 1974
Subject Area: Electrical & Electronic Engineering
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|Title:||On Insulation Resistance|
|Author(s):||B.N. Ellis, (Protonique SA, Romanel-sur-Lausanne, Switzerland)|
|Citation:||B.N. Ellis, (1995) "On Insulation Resistance", Circuit World, Vol. 21 Iss: 2, pp.5 - 18|
|Article type:||General review|
|DOI:||10.1108/eb046297 (Permanent URL)|
|Publisher:||MCB UP Ltd|
|Abstract:||Surface insulation, electrochemical migration and various other insulation resistances are terms which are often glibly used, sometimes even incorrectly. This paper categorises different types of insulation resistance and catalogues about twenty practical applications of insulation resistance measurement, each with its ideal general conditions of measurement (test voltage, bias voltage, bias polarity, test voltage period, test frequency, test duration, temperature, humidity, test pattern type, test pattern dimensions, voltage gradients, tolerances, etc.) This description is independent of any of the nearly forty known, often contradictory, standards, most of which no longer correspond to the practical printed circuit or assembly of today. Also discussed are the different technologies of insulation resistance measurement, starting with the original non-electronic ‘Megger®’ types through to modern laboratory electrometers and, finally, instrumentation specific to the practical measurement of printed circuit insulation resistances, including |
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