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Electrical apparatus for use in the presence of combustible dust. Part 17. Inspection and maintenance of electrical installations in hazardous areas (other than mines)

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Insulation coordination for equipment within low-voltage systems. Part 2-2. Interface considerations. Application guide

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Radio-frequency cable type PK 75-2-21. Specifications

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Butterfly valves and spherical valves for hydraulic turbines. Technical specifications

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Radio-frequency cable type PK 75-7-22. Specifications

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Electrical insulation systems. Methods of multi-factor functional tests

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