IEEE P62271-111/PC37.60_D5, May 2015

IEEE P62271-111/PC37.60_D5, May 2015 is an IEC/IEEE draft international standard focused on high-voltage switchgear and controlgear, with specific attention to automatic circuit reclosers for alternating current systems up to and including 38 kV. It is relevant to power and energy applications where interruption, reclosing, and system coordination need to be defined with care. This technical document helps frame design and performance expectations for equipment used in distribution networks and related electrical systems.

Overview of IEEE P62271-111/PC37.60_D5, May 2015

This draft standard addresses the requirements and technical context for automatic circuit reclosers in medium-voltage AC systems. In the IEEE P62271-111/PC37.60_D5, May 2015 framework, the emphasis is on defining how this type of switchgear should operate within a coordinated electrical network, including interruption and reclosing behavior. It is intended to support consistent engineering practice for equipment that must respond reliably to faults while remaining compatible with broader high-voltage switchgear and controlgear expectations.

Typical use cases

This standard is typically used when specifying or evaluating automatic circuit reclosers for overhead or distribution-fed systems up to 38 kV. It is relevant to utility engineers, equipment manufacturers, and procurement teams working on feeder protection, sectionalizing, and restoration functions in power distribution networks. IEEE P62271-111/PC37.60_D5, May 2015 may also be consulted during product comparison, design review, and acceptance testing where coordinated protection and automated reclosing behavior are important.

Why it matters

For switchgear and controlgear applications, clear technical requirements help reduce ambiguity in design and purchasing decisions. IEEE P62271-111/PC37.60_D5, May 2015 matters because automatic reclosers must perform predictably under fault conditions, support safe system operation, and align with expected ratings and test considerations. Using a defined standard can improve consistency across projects, support compliance evaluation, and lower the risk of mismatched equipment in critical distribution infrastructure.

• Automatic circuit reclosers for AC systems up to 38 kV
• High-voltage switchgear and controlgear context
• Reclosing, interruption, and coordination considerations
• Distribution network specification and review
• Engineering and procurement reference for compliance checks