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Photovoltaic devices. Part 5. Determination of the equivalent cell temperature (ECT) of photovoltaic (PV) devices by the open-circuit voltage method
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Electric power systems. Operational dispatching control. Frequency control and control of active power in interconnected power system. General requirements
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House-tube water-watered heat supply systems. General specifications
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Electromagnetic compatibility of technical equipment. Vehicles, boats and devices with internal combustion engines. Radio disturbance characteristics. Limits and methods for the protection of off-board receivers
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Marine, locomotive and industrial engines. General safety requirements
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