IEEE PC37.04/D5, Jul 2018

IEEE PC37.04/D5, Jul 2018 is a draft IEEE standard focused on ratings and requirements for AC high voltage circuit breakers with rated maximum voltage above 1000 V. It is relevant to components, circuits, devices, and systems used in power and energy applications, where clear electrical ratings and performance expectations help guide equipment selection and verification. As a technical document, IEEE PC37.04/D5, Jul 2018 supports consistent engineering decisions for high-voltage breaker applications.

IEEE PC37.04/D5, Jul 2018 overview

This draft standard addresses the technical requirements and rating framework for AC high voltage circuit breakers operating above 1000 V. It is intended to define how such breakers are characterized for application, design, and testing, helping users compare equipment on a consistent basis. IEEE PC37.04/D5, Jul 2018 is especially relevant where electrical performance, interruption capability, and rated values must be aligned with system expectations in power-focused installations.

Typical use cases

This standard is commonly used when specifying or reviewing AC high voltage circuit breakers for substations, utility switching equipment, and other power system installations above 1000 V. It may also support procurement and engineering review for breaker ratings, coordination with system voltage levels, and acceptance of equipment intended for demanding interruption duties. IEEE PC37.04/D5, Jul 2018 is useful wherever high-voltage switching devices need a clear technical basis for selection and application.

Why this standard matters

For engineers and buyers, IEEE PC37.04/D5, Jul 2018 helps reduce uncertainty around the ratings and requirements of high voltage circuit breakers. A defined standard supports more consistent design control, safer application, and better comparison of products during specification and procurement. It can also improve testing and compliance workflows by giving stakeholders a shared reference for expected performance, which is important in high-energy electrical systems where equipment mismatch can raise operational risk.

• AC high voltage circuit breakers
• Rated maximum voltage above 1000 V
• Ratings and application requirements
• Testing and performance reference
• Power system equipment selection