Mechanical vibration. Measurement and evaluation of machine vibration. Part 3. Industrial machinery with a power rating above 15 kW and operating speeds between 120 r/min and 30 000 r/min
Low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 4. Resistance of earth connection and equipotential bonding