BS PD IEC TS 62271‑319:2024

This part of IEC 62271, which is a Technical Specification, is applicable to alternating current circuit-breakers with intentional non-simultaneous pole operation designed for indoor or outdoor installations and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V. This document provides additional ratings and type tests to be conducted for this type of circuit-breaker and is intended to be used in conjunction with IEC 62271-100:2021. Intentional non-simultaneous pole operation can be implemented by mechanical or electrical means and both methods are within the scope of this document.

Satisfactory service performance of controlled switching systems is influenced by the inherent performance capabilities of the switching device and by the choice of a suitable controller (relay) and requires proper integration of these devices. Consequently, practical applications of controlled switching require a coordinated approach to system integration.

This document addresses the performance capabilities of the switching device and establishes suitability for controlled switching when applied with an appropriate controller. Type tests are defined, and guidance is provided to establish the switching device capabilities and parameters required to facilitate proper system integration, but this document does not address the performance requirements of the controller. In summary, compliance and testing in accordance with the requirements and guidance presented herein verify the ability of the switching device to meet defined switching accuracy requirements only when applied with a suitably specified controller.