IEEE C37.90.1-1989
IEEE Standard Surge Withstand Capability (SWC) Tests for Protective Relays and Relay Systems
Available Formats:
- Availability: Immediate Download
- Language: English
- License Type: Single User
- Updates: Not Included
- Availability: Request Quote
- Language: English
- License Type: Enterprise / Multi User
- Updates: Included
About This Item
IEEE C37.90.1-1989 defines surge withstand capability testing for protective relays and relay systems used in power, energy, and industrial applications. It helps engineers evaluate whether relay equipment can tolerate transient electrical disturbances without losing function or accuracy. As a superseded technical document, IEEE C37.90.1-1989 remains relevant for understanding legacy test expectations, procurement references, and historical compliance decisions in relay engineering.
About IEEE C37.90.1-1989
This standard focuses on surge withstand capability, commonly called SWC, for protective relays and relay systems. It sets out a technical basis for checking how these devices respond to surge events that may occur in electrical installations. In practice, the document is used to support test planning, design review, and specification of relay performance under transient conditions. IEEE C37.90.1-1989 is especially useful where stable operation and reliable protection functions are important.
Where is IEEE C37.90.1-1989 used?
IEEE C37.90.1-1989 is typically applied in the testing and selection of protective relays used in substations, switchgear, control panels, and related power system equipment. It is relevant to utilities, industrial plants, and other environments where relay systems must withstand electrical surges while continuing to operate correctly. The standard is also useful in engineering workflows that compare legacy relay products, review equipment specifications, or confirm test methods for transient immunity.
Importance in practice
In practice, the standard helps reduce risk by giving a clear reference for surge testing of relay equipment. That supports more consistent design decisions, better procurement checks, and more defensible compliance documentation. For manufacturers and users of protective relays, IEEE C37.90.1-1989 can help verify that equipment is suitable for demanding electrical environments and that transient exposure will not lead to unexpected malfunction. It is also valuable when working with older installations or legacy technical requirements.
- Surge withstand capability testing
- Protective relays and relay systems
- Transient immunity for electrical equipment
- Legacy compliance and specification reference
- Publication Date: 1989
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Summarize with AI
Get quick summaries using your favorite AI engine.
Online Standart Disclaimer
OnlineStandart.com is an authorized reseller of international standards, operating through partnerships with authorized distributors. We do not own the copyrights or trademarks of the standards we sell, including but not limited to those of API, ASHRAE, BSI, SAE, ASTM, IEEE, IEC, ASME, ISO, and others.
All product names, logos, and brands are the property of their respective owners and are used for identification purposes only; their use does not imply endorsement. OnlineStandart.com is not affiliated with or endorsed by any standards development organization unless explicitly stated. The content of this document is for informational purposes only and is intended to promote our licensed reselling services.
Online Standart does not host, distribute, or link to free, unlicensed, or uncertified copies of copyrighted standards. Every document we deliver is a licensed copy obtained through authorized channels and supplied with full licensing documentation. The “Free PDF Download” option on our product pages refers to this free informational document — never to a free copy of any standard.