Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-3: Examinations and measurements - Active monitoring of changes in attenuation and return loss (IEC 61300-3-3:2009); German version EN 61300-3-3:2009
Edition 2009-12

Microwave ferrite components - Guide for the drafting of specifications (IEC 61609:1996); German version EN 61609:1999
Edition 1999-12

Rolling stock for electric traction; terms for electric gears, parts for construction and function
Edition 1969-10

Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-1: Measurement, control and protection devices for specific use in a.c. traction systems - Devices; German version EN 50152-3-1:2017
Edition 2017-10

Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-3: Measurement, control and protection devices for specific use in a.c. traction systems - Voltage transformers; German version EN 50152-3-3:2016
Edition 2016-11

Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-2: Measurement, control and protection devices for specific use in a.c. traction systems - Current transformers; German version EN 50152-3-2:2016
Edition 2016-11

Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems; section 6: Protection switching (IEC 60835-2-6:1995); German version EN 60835-2-6:1995
Edition 1995-08

Portable protective devices intended for an increase in the protection level for 230 V a.c. rated voltage, 16 A rated current, rated residual current IΔn ≤30 mA
Edition 1988-04

Measurement of the electrical properties of electronic tubes; measurement of cross-modulation in case of AM-AM-transfer
Edition 1973-12

Low-voltage switchgear and controlgear - Part 5-6: Control circuit devices and switching elements, DC interface for proximity sensors and switching amplifiers (NAMUR) (IEC 60947-5-6:1999); German version EN 60947-5-6:2000
Edition 2000-12