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United power system and isolated power systems. Operational dispatch management. Relay protection and automation. Technical accounting and operations analysis. General requirements
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Cables, wires and cords. Methods of control of bending resistance with twisting
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Heat exchangers. Test methods for determining the power criteria of air/air and an air/exhaust gas mixture heat recovery devices
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Intelligent terminal for feeder bay of traction substations, for pole-mounted substations and for specific electric railways equipment. Technical requirements
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Explosive atmospheres. Part 18. Equipment protection by encapsulation 'm'
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Internal combustion reciprocating engines. Emissions of harmful substances with the exhaust gases. Limit values and test methods
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