Mechanical vibration. Evaluation of machine vibration by measurements on rotating shafts. Part 2. Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min
Low-voltage switchgear and controlgear. Part 5-7. Control circuit devices and switching elements. Requirements for proximity devices with analogue output
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