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Explosionproof electrical equipment. Part 2. Filling or purging of the pressurized enclosure 'p'
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Brushes for electrical machines. Methods for determination of the commutator characteristics
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Electrical equipment and installations for a.c. voltage 3 kV and higher. General methods of dielectric tests
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Main coaxial cables with type 2,6/9,4 and 2,6/9,5 pairs. Specifications
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Electrical equipment and a. c. installations on up to 3 kV voltages and higher. Test methods of the electrical equipment insulation dielectric strength on the installation site
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