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Electric motor frequency changers with rated power of 250 kW and above. General specifications
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Cores for inductors and transformers for telecommunications. Part 1. Measuring methods
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Electrical apparatus for explosive gas atmospheres. Electrical resistance trace heaters. Part 1. General technical requirements and test methods
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Electric and optical fibre cables. Test methods for non-metallic materials. Part 512. Mechanical tests. Methods specific to polyethylene and polypropylene compounds. Tensile strength and elongation at break after conditioning at elevated temperature
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United power system and isolated power systems. Operative-dispatch management. Active power reserves of United power system of Russia. Evaluation of the volume of active power reserves at short-term planning. Norms and requirements
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Electrical equipment and receivers of electric energy. Series of nominal currents
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