Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V. Part 2-16. Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units
Design and manufacture of site built, vertical, cylindrical, flat-bottomed steel tanks for the storage of refrigerated, liquefied gases with operating temperatures between 0 °C and to -165 °C. Part 2. Metallic constructions
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