BS EN 61082-1 Part 1: Rules 2015, now published in its third edition, is the latest version of a long-established industry standard for the production of electrotechnical documentation
Safety of transformers, reactors, power supply units and combination thereof. Particular requirements and tests for variable transformers and power supply units incorporating variable transformers
BS EN 60079-0 specifies the general requirements for construction, testing and marking of electrical equipment and Ex components intended for use in explosive atmospheres.