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Codes & Standards - Purchase

IEC 60050-444:2002

International Electrotechnical Vocabulary (IEV) - Part 444: Elementary relays
  • Bilingual
  • Published in 2002
  • Published by IEC
Codes & Standards - Purchase

IEC 60050-445:2010

International Electrotechnical Vocabulary (IEV) - Part 445: Time relays
  • Bilingual
  • Published in 2010
  • Published by IEC
Codes & Standards - Purchase

IEC 60050-447:2020

International Electrotechnical Vocabulary (IEV) - Part 447: Measuring relays and protection equipment
  • Bilingual
  • Published in 2020
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-121:2014

Measuring relays and protection equipment - Part 121: Functional requirements for distance protection
  • Bilingual
  • Published in 2014
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-127:2010

Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
  • Bilingual
  • Published in 2010
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-12:1980

Electrical relays - Part 12: Directional relays and power relays with two input energizing quantities
  • Bilingual
  • Published in 1980
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-13:1980

Electrical relays - Part 13: Biased (percentage) differential relays
  • Bilingual
  • Published in 1980
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-149:2013

Measuring relays and protection equipment - Part 149: Functional requirements for thermal electrical relays
  • Bilingual
  • Published in 2013
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-151:2009

Measuring relays and protection equipment - Part 151: Functional requirements for over/under current protection
  • Bilingual
  • Published in 2009
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-181:2019

Measuring relays and protection equipment - Part 181: Functional requirements for frequency protection
  • Bilingual
  • Published in 2019
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-187-1:2021/COR1:2023

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
  • Bilingual
  • Published in 2023
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-1:2022

Measuring relays and protection equipment - Part 1: Common requirements
  • Bilingual
  • Published in 2022
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-21-1:1988

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section One: Vibration tests (sinusoidal)
  • Bilingual
  • Published in 1988
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-21-2:1988

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section Two: Shock and bump tests
  • Bilingual
  • Published in 1988
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-21-3:1993

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic tests
  • Bilingual
  • Published in 1993
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-24:2013

Measuring relays and protection equipment - Part 24: Common format for transient data exchange (COMTRADE) for power systems
  • Bilingual
  • Published in 2013
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-26:2023

Measuring relays and protection equipment - Part 26: Electromagnetic compatibility requirements
  • Bilingual
  • Published in 2023
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-27:2023

Measuring relays and protection equipment - Part 27: Product safety requirements
  • Bilingual
  • Published in 2023
  • Published by IEC
Codes & Standards - Purchase

IEC 60255-27:2023 CMV

Measuring relays and protection equipment - Part 27: Product safety requirements
  • English
  • Published in 2023
  • Published by IEC
Codes & Standards - Purchase

IEC 61810-10:2019

Electromechanical elementary relays - Part 10: Additional functional aspects and safety requirements for high-capacity relays
  • Bilingual
  • Published in 2019
  • Published by IEC