Three phase dry-type distribution transformers 50 Hz, from 100 kVA to 3 150 kVA, with highest voltage for equipment not exceeding 36 kV - Part 2: Determination of loadability of a transformer loaded with non-sinusoidal current
Non-domestic direct gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW
Non-domestic direct gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW
Non destructive testing - Penetrant testing - Part 1: General principles
Non-destructive testing - Ultrasonic examination - Part 1: General principles
Non-destructive testing - Ultrasonic examination - Part 1: General principles
Non-destructive testing - Ultrasonic examination - Part 2: Sensitivity and range setting
Non-destructive testing - Ultrasonic examination - Part 3: Transmission technique
Non-destructive testing - Ultrasonic examination - Part 4: Examination for discontinuities perpendicular to the surface
Non-destructive testing - Ultrasonic examination - Part 4: Examination for discontinuities perpendicular to the surface
Non-destructive testing - Ultrasonic examination - Part 5: Characterization and sizing of discontinuities
Non-destructive testing - Ultrasonic examination - Part 5: Characterization and sizing of discontinuities
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