IEEE C37.119-2016

IEEE C37.119-2016 is a technical guide for breaker failure protection of power circuit breakers, helping define how protection schemes should respond when a breaker does not clear a fault as intended. In power, energy, and industrial applications, this kind of guidance supports more consistent design and coordination of protective systems. IEEE C37.119-2016 is useful for engineers who need a focused reference on protection logic, timing, and reliability considerations in breaker failure applications.

What is IEEE C37.119-2016?

This standard provides guidance for breaker failure protection in power circuit breaker systems, a specialized area of power-system protection. It is concerned with the conditions that can occur when a breaker fails to operate properly and with the protective actions that may be needed afterward. IEEE C37.119-2016 is relevant to the planning, application, and review of protection schemes, where clear coordination and dependable response are important. As a technical document, it helps support consistent engineering judgment.

Where is IEEE C37.119-2016 used?

IEEE C37.119-2016 is typically used in substations, switchgear installations, and other power-system environments that rely on power circuit breakers and protective relaying. It is especially relevant where breaker failure logic may affect feeders, buses, transformers, or other connected equipment. Engineers, utility protection groups, and industrial power system designers may use it when evaluating relay settings, system coordination, and fault-clearing strategies. The standard is also helpful during specification and review of protection schemes for critical installations.

Why is IEEE C37.119-2016 important?

This guide matters because breaker failure protection can limit the impact of a breaker that does not clear a fault in time. Using IEEE C37.119-2016 can support safer protection design, better coordination, and more consistent engineering practice across projects. It may also help reduce ambiguity during procurement, testing, and commissioning by giving teams a common technical reference. For systems where interruption speed and selectivity are important, the standard supports lower risk and more predictable performance.

• Breaker failure protection guidance
• Power circuit breaker applications
• Protection scheme coordination
• Substation and switchgear use
• Engineering and review reference