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1. Scope 1.1 This Standard applies to complete flue-connected, oil-fired steam and/or hot-water low pressure boilers, provided with automatic control devices. 1.2 This Standard applies to boilers intended for residential use having an input of less than 3 gallons per hour (US) (approximately 400,000 Btu/h). Note: A boiler which has an input exceeding this limit may be considered…

Provides an accelerated means of assessing the corrosive effect of atmospheres polluted with sulphur dioxide on contacts and connections. Has the status of a basic safety publication in accordance with IEC Guide 104.

Provides an accelerated means of assessing the effect of tarnishing on silver and silver alloys used for contacts and connections. Is particularly suitable for comparative information, but not as a general corrosion test, i.e. it may not predict the behaviour of contacts and connections in industrial atmospheres. The objects are: a) to determine the influence of atmospheres containing hydrogen…

Applies to three-phase and single-phase transformers including autotransformers. Defines the rating and connection symbols. Gives certain specifications for transformers having a tapped winding. Defines information which shall be marked on the rating plate and the tests to be conducted. Supersedes IEC 76(1967) and IEC 76-4 (1976).

Defines classes of electrical and electronic equipment regarding protection against electric shock. Applies to equipment intended for connection to an external power supply with voltages up to 440 V r.m.s. between phases and 250 V r.m.s. between phases and earth, for use by the general public in homes, offices, workshops, schools, farms and the like, and for medical and dental purposes. Has the…

Specifies the tests which shall be used, when required, by the detail specification for electromechanical components having a connecting or switching function; intended for use in equipment for telecommunication and in electronic devices employing similar techniques.