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The railway transport objects testing methods of prolongation operating cycle. Part 1. Power transformers and auto transformers for railway power substations, transform substations and power supply linear devices
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Electric and optical fibre cables. Test methods for non-metallic materials. Part 509. Mechanical tests. Test for resistance of insulations and sheaths to cracking (heat shock test)
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Dielectric materials. Methods of determination of permittivity and power factor within a frequency range of 100 to 5x10 in 6 degree Hz
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Electrical articles. Applications for different climatic regions. General technical requirements as to environment climatic aspects influence
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