Explosionproof electrical apparatus. Part 18. Type of protection (m)
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Explosion-proof mine low-voltage automatic switches. Technical requirements. Test methods
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Water-tube boilers and auxiliary installations. Part 6. Inspection during construction, documentation and marking of pressure parts of the boiler
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Connecting devices. Safety requirements for clamping units. Part 2. Particular requirements for screw-type and screwless-type clamping units for copper conductors above 35 mm2 up to 300 mm2 (included)
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Self-ballasted LED-lamps for general lighting services by voltage 50 V. Safety specifications
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