IEC 60255-149:2013
Measuring relays and protection equipment - Part 149: Functional requirements for thermal electrical relays
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About This Item
IEC 60255-149:2013 defines the functional requirements for thermal electrical relays, making it a relevant technical reference for teams involved in protection relay selection, evaluation, and conformity assessment. Based on the title, the document is concerned with how thermal electrical relays are expected to perform in practical protection applications, supporting engineering documentation, testing workflows, and procurement reviews. For organizations assessing protection equipment, IEC 60255-149:2013 helps establish a clear basis for technical validation and operational consistency.
Overview of IEC 60255-149:2013
This edition of IEC 60255-149:2013 forms part of the measuring relays and protection equipment series and addresses the functional requirements associated with thermal electrical relays. In practice, that means it is likely used to define the expected behavior, performance criteria, and verification points relevant to these devices within protection systems. It is especially useful where technical review, laboratory evaluation, and documented evaluation are needed to confirm that relay behavior aligns with the intended engineering specification and compliance reference.
Compliance applications of IEC 60255-149:2013
IEC 60255-149:2013 is commonly relevant during product evaluation, type testing, and conformity assessment for thermal electrical relays used in electrical equipment and protection assemblies. It may support procurement teams checking that a device is suitable for a defined technical requirement, while also helping laboratories structure verification activities and test documentation. In engineering and quality workflows, the reference can assist with regulatory preparation, internal approval processes, and the review of performance expectations for relay-based protection functions.
Importance of compliance with IEC 60255-149:2013
Alignment with IEC 60255-149:2013 can improve safety, reduce technical ambiguity, and support consistent evaluation of thermal electrical relays across different projects or suppliers. For manufacturers and users, a clear functional baseline helps with testing consistency, engineering validation, and risk management in protection applications. It also supports procurement decisions by giving buyers a recognized basis for comparison, and it can simplify conformity assessment preparation by linking design, test evidence, and operational requirements in a structured way.
- Functional requirements for thermal electrical relays used in protection applications
- Useful for technical review, product evaluation, and laboratory verification activities
- Supports procurement checks and compliance workflows for relay-based equipment
- Helps structure documentation for engineering validation and conformity assessment
- Publication Date: 2013-07-30
- Standard Status: Original
- Publisher: IEC
- Edition: 1
- This Version: IEC 60255-149:2013 (2013-07-30)
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