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Defines terms for the excitation systems of synchronous rotating electrical machines. The contents of the corrigendum of April 1992 have been included in this copy.

IEC 60994:1991 applies to any type of reaction or impulse turbine, as well as to any type of pump-turbine and storage pump, coupled to an electric generator or motor. It covers the field of vibration and pulsation tests referred to as standard tests. The contents of the corrigendum of April 1997 have been included in this copy.

The method given is applicable to copper, lead and zinc sulfide concentrates free from volatile organic flotation reagents, e.g. kerosene, and with hygroscopic moisture contents between 0,05 % (m/m) and 2 % (m/m). It is used to correct the analysis results from the equilibrated moisture level to the dry basis. This method is not applicable to sulfide concentrates which are susceptible to…

General Introduction One of the key requirements before organizations can exchange administrative, commercial and transport information between their computers, without manual intervention, is agreement on the content and structure of the information to be transmitted. In EDIFACT, this is achieved by developing United Nations Standard Electronic Messages (UNSM's), for both national and…

The method given is applicable to fluorspars having sulfur contents in the range 0,01 % (m/m) to 1,0 % (m/m). Describes in detail: principle, reagents and materials, apparatus, test sample, procedure, expression of results, and test report. Annex A gives values of total sulfur content of metallurgical grade fluorspars obtained in interlaboratory trials using the iodometric method after combustion…

1.1 This method evaluates the colourfastness to light of textiles in all forms by exposing the material to the radiation from an enclosed carbon-arc. 1.2 The method may also be used to evaluate dye stuffs that have been applied to textiles under specified conditions and depth of shade. 1.3 Colorfastness to light is dependent upon factors such as the spectral distribution and intensity of…

This publication completes IEC 60694 as regards a.c. metal-enclosed switchgear and controlgear and applies also to gas-filled compartments used in metal-enclosed switchgear and controlgear. Defines service conditions, applicable terms and rated characteristics. Specifies rules for design and construction and rules for type tests and routine tests. Also provides general information on the…

Specifies performance requirements for electronic ballasts for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz with operating frequencies deviating from the supply frequency, associated with tubular fluorescent lamps as specified in IEC 60081 and 60901 and other tubular fluorescent lamps for high frequency operation. The contents of the corrigendum of June 1991 have been included in this…

Gives certain characteristics of this oil, with a view of facilitating the assessment of its quality. Includes the definition of this oil, requirements for colour, odour, relative density, refractive index, optical rotation, residue on evaporation and carbonyl compounds content, expressed as decanal, sampling, methods of test, packaging, labelling and marking.