This guide reviews existing standards and performance criteria for switchgear rated above 1000 V. Each aspect of performance is discussed within the context of Sulfur Hexafluoride (SF6) alternatives, how their behavior might differ from existing technologies and how this behavior can lead to changes in the qualification process. Relevant analytical, numerical and test methods are discussed which contribute to the process of performance evaluation and evolution of the standards.
This part of IEC 62271 is applicable to three-phase AC high-voltage generator circuit-breakers, hereafter called generator circuit-breakers, designed for indoor or outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 kV and up to 38 kV. It is applicable to generator circuit-breakers that are installed between the generator and the transformer terminals. Requirements relative to generator circuit-breakers intended for use with generators and… read more transformers rated 10 MVA or more are covered specifically. Generator circuits rated less than 10 MVA and pumped-storage installations are considered special applications, and their requirements are not completely covered by this document. This document is also applicable to the operating mechanisms of generator circuit-breakers and to their auxiliary equipment. read less
This part of International Standard 62271 provides methods for the measurement of sound pressure level produced by outdoor alternating current circuit-breakers in a free-field environment. These methods may also be used indoors or in restricted field, provided that precautions are observed in the measurement and interpretation of the results.
This part of IEC 62271 applies to all overhead, pad-mounted, dry vault and submersible single or multi-pole alternating current automatic circuit reclosers for rated maximum voltages above 1 000 V. In order to simplify this document where possible, the term recloser (or reclosers) has been substituted for automatic circuit recloser(s) or cutout mounted recloser(s) or both.
This standard includes conformance tests and requirements for the enclosure integrity of pad-mounted, pole-mounted, and submersible distribution switchgear rated above 1 kV, up to and including 38 kV as well as the enclosure integrity of the associated controls. This standard applies to enclosure security and coating requirements for coastal and non-coastal environments
This part of IEC 62271 applies to all overhead, pad-mounted, dry vault and submersible single or multi-pole alternating current automatic circuit reclosers for rated maximum voltages above 1 000 V and up to and including 38 kV. Devices that require a dependent manual operation are not covered by this document. In order to simplify this document where possible, the term recloser (or reclosers) has been substituted for automatic circuit recloser(s) or cutout mounted recloser(s) or both.
This standard provides requirements for low-voltage (600 V ac and below) definite-purpose switching (LVDPS) devices (other than power circuit breakers) for use in metal-enclosed low-voltage power circuit breaker switchgear described in IEEE Std C37.20.1(TM). These switching devices may be used in motor control or other repetitive duty applications and have the following characteristics: a) Drawout type, three-pole construction; b) Integral current-limiting fuses for short-circuit protection; c)… read more Power operated, with integral or separately mounted overcurrent protective devices; In this standard, the term "LV-DPS device" denotes a low-voltage definite-purpose switching device conforming to the requirements of this standard. read less
This standard provides requirements for low-voltage (600 V ac and below) definite-purpose switching (LV-DPS) devices (other than power circuit breakers) for use in metal-enclosed low-voltage power circuit breaker switchgear described in IEEE Std C37.20.1(TM). These switching devices may be used in motor control or other repetitive duty applications and have the following characteristics: a) Drawout type, three-pole construction; b) Integral current-limiting fuses for short-circuit protection; c)… read more Power operated, with integral or separately mounted overcurrent protective devices; In this standard, the term "LV-DPS device" denotes a low-voltage definite-purpose switching device conforming to the requirements of this standard. read less
As part of the Dual Logo Agreement between IEEE and IEC, this standard is denoted IEC/IEEE 62271-37-082. This standard provides methods for the measurement of sound pressure level produced by outdoor alternating current circuit-breakers in a free-field environment. These methods may also be used indoors or in restricted field, provided that precautions are observed in the measurement and interpretation of the results.
This standard presents basic requirements for the design, testing and application of microprocessor-based controls of distribution switchgear rated above 1 kV up to and including 38 kV. The standard is intended to mitigate the effects of the harsh environments which may be encountered outside the protections provided by a typical substation. This standard applies to microprocessor-based devices employed in distribution switchgear typically mounted on power poles, in wet or dry vaults, or in pad… read more mounted switchgear enclosures. This standard also does not apply to microprocessor-based devices employed in high voltage circuit breakers (IEEE C37.04 "Standard Rating Structure for AC High-Voltage Circuit Breakers") or metal-enclosed switchgear (IEEE C37.20.2 "Standard Metal-Clad Switchgear" and IEEE C37.20.3 "Standard for Metal-Enclosed Interrupter Switchgear"). This standard does not invalidate any tests performed on power system protective relays which are designed to IEEE C37.90 ("Standard for Relays and Relay Systems Associated with Electric Power Apparatus"). Lastly, this standard will not cover the design of the control enclosure such as mounting, latching, or user accessibility. read less
This standard presents basic requirements for the design, testing, and application of microprocessor-based controls of distribution switchgear rated above 1 kV and up to and including 38 kV. The standard is intended to mitigate the effects of the harsh environments that may be encountered outside the protections provided by a typical substation. This standard applies to microprocessor-based devices employed in distribution switchgear typically mounted on power poles, in wet or dry vaults, or in… read more pad-mounted switchgear enclosures. This standard does not apply to microprocessor-based devices employed in high voltage circuit breakers (IEEE Std C37.04™, Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V) or metal-enclosed switchgear [IEEE Std C37.20.2™, Standard for Metal-Clad Switchgear and IEEE Std C37.20.3™, Standard for Metal-Enclosed Interrupter Switchgear (1 kV- 38 kV)]. This standard does not invalidate any tests performed on power system protective relays which are designed to IEEE Std C37.90™, Standard for Relays and Relay Systems Associated with Electric Power Apparatus. Lastly, this standard does not cover the design of the control enclosure such as mounting, latching, or user accessibility, and does not supersede the requirements of controls which are defined and tested per the switchgear equipment standard. read less