IEEE 62271-37-013-2021

62271-37-013-2021 is a technical standard for alternating current generator circuit-breakers, presented as a redline edition for tracking changes in the document. It addresses the engineering, rating, and performance expectations for equipment used in power-generation applications, where reliable interruption and system protection are critical. For manufacturers, specifiers, and compliance teams, this standard helps define the requirements that support consistent design decisions and safer integration into generator-connected electrical systems.

62271-37-013-2021 overview

This standard focuses on alternating current generator circuit-breakers within the broader 62271 series, which is associated with high-voltage switchgear and controlgear applications. The redline format is useful when comparing revisions, because it highlights how the technical requirements have changed in 62271-37-013-2021. In practice, the document is relevant to equipment intended to interrupt generator currents, coordinate with protection schemes, and support dependable operation in power, energy, and industrial installations.

Typical use cases

This specification is typically used when selecting, designing, or verifying circuit-breakers installed between generators and electrical networks in power plants, industrial generation units, or other medium- to high-voltage systems. It is also relevant for engineering teams reviewing protection coordination, insulation performance, and switching duty expectations for generator-connected assemblies. The redline edition can help technical teams compare updates during procurement, conformity assessment, or equipment redevelopment work.

Why this standard matters

For generator circuit-breakers, clear requirements are important because interrupting fault or load currents can place demanding electrical and mechanical stresses on the equipment. 62271-37-013-2021 supports more consistent design control, testing, and specification review, which may reduce risk during operation and commissioning. It also helps buyers and engineers compare products on a common technical basis, improving procurement confidence and supporting compliance with applicable switchgear practices.

• Alternating current generator circuit-breakers
• Redline change comparison
• Power generation and industrial applications
• Switchgear performance and protection
• Design, testing, and compliance review