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Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V. Part 2-6. Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
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Degrees of protection provided by enclosures against external mechanical impacts (IK code)
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Brushes for electrical machines. Methods for determination of the commutator characteristics
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Tests on indoor post insulators of organic material for systems with nominal voltages greater than 1000 V up to 300 kV
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Copper winding wires with thermoreactive bonding. Technical requirements
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