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A. c. high-voltage circuit-breakers rated voltages 6-220 kV for frequent switching operations. General specifications
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Electrical apparatus for explosive gas atmospheres. Part 10. Classification of hazardous areas
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Auxiliaries for lamps. Starting devices (other than glow starters). General and safety requirements
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Miscellaneous lampholders. Part 2-1. Particular requirements to lampholders S14
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The stationary steam generators with pressure up to 3,9 MPa. Quality indices of water and steam feeding the generator
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