Industrial process control systems - Part 2: Methods of evaluating the performance of intelligent valve positioners with pneumatic outputs mounted on an actuator valve assembly (IEC 61514-2:2013) (english version)
Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines (IEC 60947-8:2003 + A1:2006 + A2:2011) (english version)
Live working - Voltage detectors - Part 1: Capacitive type to be used for voltages exceeding 1 kV a.c. (IEC 61243-1:2003, modified + Corrigendum 1:2005 + A1:2009) (english version)
Electricity metering equipment (AC) - General requirements, tests and test conditions -- Part 21: Tariff and load control equipment (IEC 62052-21:2004 + A1:2016) (english version)