Letter symbols to be used in electrical technology – Part 4: Rotating electric machines
standard by International Electrotechnical Commission, 12/11/2006

Acoustic monitoring systems for loose parts detection – Characteristics, design criteria and operational procedures
standard by International Electrotechnical Commission, 10/25/1990

Thermistors – Directly heated positive temperature coefficient – Part 1: Generic specification
standard by International Electrotechnical Commission, 04/10/2006

Stabilized power supplies, a.c. output
standard by International Electrotechnical Commission, 01/01/1980

OPC unified architecture – Part 3: Address Space Model
standard by International Electrotechnical Commission, 07/08/2020

Electroacoustics – Measurement microphones – Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique
standard by International Electrotechnical Commission, 02/20/2009

GRAFCET specification language for sequential function charts
standard by International Electrotechnical Commission, 02/27/2013

Optical fibre cables – Part 5-20: Family specification – Outdoor microduct fibre units, microducts and protected microducts for installation by blowing
standard by International Electrotechnical Commission, 02/14/2014

Corrigendum – Tests on electric and optical fibre cables under fire conditions – Part 3-10: Test for vertical flame spread of vertically-mounted bunched wires or cables – Apparatus
Corrigenda by International Electrotechnical Commission, 10/11/2018

Electricity metering equipment – Particular requirements – Part 24: Static meters for fundamental component reactive energy (classes 0,5S, 1S, 1, 2 and 3)
standard by International Electrotechnical Commission, 06/17/2020