Internal buildings and structures utilities. Mounting and start-up adaptive control of air-conditioning evaporative and condensing units. General technical requirements
Safety requirements for electrical equipment for measurement, control and laboratory use. Part 031. Safety requirements for hand-held probe assemblies for electrical measurement and test
Safety of power transformers, power supplies, reactors and similar products. Part 2-4. Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers
