CAN/CSA-E491-94 (R2013)

This National Standard of Canada is based on International Standard CEI/IEC 491:1984. 1. Scope 1.1 This standard applies to the following electronic flash apparatus for photographic purposes, having a stored energy not exceeding 2 000 J, together with associated apparatus and not intended to be subjected to dripping or splashing: - apparatus of the single-flash type which can have more than one flash head operating at the same time; - apparatus for the illumination of sequential photographic exposures; - battery chargers and supply units to be used in connection with electronic flash apparatus for photographic purposes. These auxiliary units may form a part of the mains plug; - accessories, such as light regulators and slave units, specified in the instruction leaflet. This standard does not apply to stroboscopes. As long as no appropriate requirements exist for apparatus having a stored energy exceeding 2 000 J, this standard may be used, in so far as it is applicable. Additional requirements may be necessary, e.g. for explosion and thermal radiation. With regard to the supply, the following categories are covered: - mains-operated apparatus; - battery-operated apparatus; - apparatus having a combination of mains and battery supply. This standard is intended to cover apparatus which can be used both in moderate and tropical climates. For the modelling lamps combined with electronic flash apparatus for photographic purposes, additional requirements may be taken from IEc Publication 598-2-9: Luminaires, Section Nine - Photo and Film Luminaires (Non-professional), as far as applicable. This Standard applies to the safety of such equipment designed to be installed and used in accordance with the rules of the Canadian Electrical Code (CEC), Part I. Note: Manufacturers designing products for use in Canada may find a helpful summary of the equipment-related requirements of the CEC, Part I, in CSa Publication Spe-2000. 1.2 This standard does not apply to apparatus designed for a rated supply voltage exceeding 250 V (r.m.s.) against earth. 1.3 This standard is concerned with safety only and not with the other properties of the apparatus (see Clause 3).