IEC - International electro-technical commission

Measuring relays and protection equipment - Part 187-1: Functional requirements for differential protection - Restrained and unrestrained differential protection of motors, generators and transformers
(Relais de mesure et dispositifs de protection - Partie 187-1: Exigences fonctionnelles pour la protection differentielle - Protection differentielle avec et sans caracteristique de retenue des moteurs, generateurs et transformateurs)

Available languages: English and French

Available design: electronic design (pdf)

Corrigendum 1 - Measuring relays and protection equipment - Part 187-1: Functional requirements for differential protection - Restrained and unrestrained differential protection of motors, generators and transformers
(Corrigendum 1 - Relais de mesure et dispositifs de protection - Partie 187-1: Exigences fonctionnelles pour la protection differentielle - Protection differentielle avec et sans caracteristique de retenue des moteurs, generateurs et transformateurs)

Available languages: English and French

Available design: electronic design (pdf), Print design, CD-ROM

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section One: Vibration tests (sinusoidal)
(Relais electriques - Vingt et unieme partie: Essais de vibrations, de chocs, de secousses et de tenue aux seismes applicables aux relais de mesure et aux dispositifs de protection - Section un: Essais de vibrations (sinusoidales))

Available languages: Spanish, English and French

Available design: electronic design (pdf), Print design, CD-ROM

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section Two: Shock and bump tests
(Relais electriques - Vingt et unieme partie: Essais de vibrations, de chocs, de secousses et de tenue aux seismes applicables aux relais de mesure et aux dispositifs de protection - Section deux: Essais de chocs et de secousses)

Available languages: Spanish, English and French

Available design: electronic design (pdf), Print design, CD-ROM

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)

Available languages: Spanish, English and French

Available design: electronic design (pdf), Print design, CD-ROM

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

Available languages: English

Available design: electronic design (pdf), Print design, CD-ROM

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)

Available languages: Russian, English and French

Available design: electronic design (pdf), Print design, CD-ROM

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

Available languages: English and French

Available design: electronic design (pdf), Print design, CD-ROM

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

Available languages: English and French

Available design: electronic design (pdf), Print design, CD-ROM

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

Available languages: English

Available design: electronic design (pdf), CD-ROM