Standards IEC - International electro-technical commission - Page 150

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic tests
(Relais electriques - Partie 21: Essais de vibrations, de chocs, de secousses et de tenue aux seismes applicables aux relais de mesure et aux dispositifs de protection - Section 3: Essais de tenue aux seismes)

Standard published on 21.9.1993

Measuring relays and protection equipment - Part 216-1: Digital interface - General requirements and tests for protection functions using digital communication as input and output

Standard published on 11.8.2025

Measuring relays and protection equipment - Part 24: Common format for transient data exchange (COMTRADE) for power systems
(Relais de mesure et dispositifs de protection - Partie 24: Format commun pour l´echange de donnees transitoires (COMTRADE) dans les reseaux electriques)

Standard published on 30.4.2013

Measuring relays and protection equipment - Part 26: Electromagnetic compatibility requirements
(Relais de mesure et dispositifs de protection - Partie 26: Exigences de compatibilite electromagnetique)

Standard published on 24.1.2023

Measuring relays and protection equipment - Part 27: Product safety requirements
(Relais de mesure et dispositifs de protection - Partie 27: Exigences de securite des produits)

Standard published on 7.2.2023

Measuring relays and protection equipment - Part 27: Product safety requirements

Standard published on 7.2.2023

Direct acting recording electrical measuring instruments and their accessories
(Appareils de mesure electriques enregistreurs a action directe et leurs accessoires)

Standard published on 1.1.1968

Amendment 1 - Direct acting recording electrical measuring instruments and their accessories
(Amendement 1 - Appareils de mesure electriques enregistreurs a action directe et leurs accessoires)

Change published on 1.1.1976

Sealing test for pressurized waveguide tubing and assemblies
(Essai d´etancheite applicable aux guides d´ondes soumis a la pression et a leurs dispositifs d´assemblage)

Standard published on 30.1.1989

Scales and sizes for plotting frequency characteristics and polar diagrams
(Echelles et dimensions des graphiques pour le trace des courbes de reponse en frequence et des diagrammes polaires)

Standard published on 26.6.2020