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Describes the tests on capacitors to establish as far as possible under laboratory conditions: their suitability for use over stated ranges of temperature, air pressure and humidity; their ability to withstand specified conditions of mechanical shock such as are to be expected under transit or operational conditions: their ability to withstand the rigours of normal assembly processes attendant on…

Describes tests that establish, as far as possible under laboratory conditions, their suitability for use and their ability to withstand specified conditions of mechanical shock and rigours of normal assembly processes. A guide to the use and testing of air dielectric rotary variable capacitors is given in an appendix.

Applies to new voltage transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz. The general requirements apply to all voltage transformers, but, for certain types, e.g. capacitor voltage transformers, the requirements are subject to the modifications stated in the appropriate chapter. Although the requirements relate…

Lays down the conditions and procedure for carrying out impulse tests on cables and their accessories, with a view to rationalizing the practice in different laboratories, and thus to facilitate valid comparisons between the results obtained on cables made to different specifications. Notes: 1.This publication should be read in conjunction with IEC 60060 and 60141. 2.For voltage measurements…

ISO 28079:2009 specifies a method for measuring the Palmqvist toughness of hardmetals and cermets at room temperature by an indentation method. ISO 28079:2009 applies to a measurement of toughness, called Palmqvist toughness, calculated from the total length of cracks emanating from the corners of a Vickers hardness indentation, and it is intended for use with metal-bonded carbides and…