This standard pertains to the requirements for direct-acting current and voltage protective functions of the following that are integral with low-voltage ac and dc power circuit breakers covered by IEEE Std C37.13 and IEEE Std C37.14: a) Direct-acting overcurrent electromechanical trip devices b) Direct-acting overcurrent electronic trip systems c) Reverse-current trip systems for dc circuit breakers d) Undervoltage trip devices This standard describes the requirements for available settings… read more and time delay characteristics for preferred protective functions as well as their operational and calibration requirements. The functional requirements for the overall circuit breaker, including test requirements (whether design, production, or conformance) are specified in the latest versions of IEEE Std C37.13, IEEE Std C37.14, and ANSI C37.50. This standard does not restrict the inclusion of additional internal or external functionality in the trip system or device. read less

定价： 59元 / 折扣价： 51 元

This guide applies to unfused low-voltage ac power circuit breakers of the 635 V maximum voltage class with separately-mounted current-limiting fuses for use on ac circuits with available short-circuit currents of 200 000 A (rms symmetrical) or less. Low-voltage ac fused power circuit breakers and combinations of fuses and molded-case circuit breakers are not covered by this guide. In this guide, the term circuit breaker means unfused low-voltage ac power circuit breaker.

定价： 56元 / 折扣价： 48 元

This guide applies to unfused low-voltage ac power circuit breakers of the 635 V maximum voltage class with separately-mounted current-limiting fuses for use on ac circuits with available short-circuit currents of 200000 A (rms symmetrical) or less. Low-voltage ac fused power circuit breakers and combinations of fuses and molded-case circuit breakers are not covered by this guide. In this guide, the term circuit breaker means unfused low-voltage ac power circuit breaker.

定价： 58元 / 折扣价： 50 元

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

定价： 250元 / 折扣价： 213 元

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.

定价： 106元 / 折扣价： 91 元

This standard covers requirements for switching-impulse voltage insulation strength for outdoor ac high-voltage circuit breakers having rated maximum voltages of 362 kV and above.

定价： 56元 / 折扣价： 48 元

This guide applies to unfused low-voltage ac power circuit breakers of the 635 V maximum voltage class with separately-mounted current-limiting fuses for use on ac circuits with available short-circuit currents of 200 000 A (rms symmetrical) or less. Low-voltage ac fused power circuit breakers and combinations of fuses and molded-case circuit breakers are not covered by this guide. In this guide, the term circuit breaker means unfused low-voltage ac power circuit breaker.

定价： 56元 / 折扣价： 48 元

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.

定价： 166元 / 折扣价： 142 元

This standard covers the schedule of dielectric test values for American National Standard, C37.078-1972 (IEEE Std 343-1972) which contains definitions, ratings, construction, and test procedure.

定价： 56元 / 折扣价： 48 元

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.

定价： 208元 / 折扣价： 177 元

This recommended practice is issued as a supplement to IEEE Std C37.06 for high-voltage circuit breaker applications where the transient recovery voltage (TRV) peak is higher and/or its rise to the crest value occurs more rapidly than those specified in IEEE Std C37.06.

定价： 57元 / 折扣价： 49 元

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

定价： 56元 / 折扣价： 48 元

This amendment implements corrections and adds new information essential to properly test AC high-voltage circuit breakers as well as further harmonize this document with other industry standards. Considered modifications are regarding the TRV values and their harmonization with IEC 62271-100 and IEEE C37.016, introduction of alternative testing procedures for T100s or introduction of an integrity check for vacuum circuit breakers.

定价： 59元 / 折扣价： 51 元

This standard applies to all indoor and outdoor types of ac high-voltage circuit breakers rated above 1000 V and rated on a symmetrical current basis.

定价： 107元 / 折扣价： 91 元

This standard provides the preferred ratings for low-voltage ac (635 V and below) power circuit breakers,fused low-voltage ac (600 V and below) power circuit breakers, general purpose dc (325 V and below) power circuit breakers, and low-voltage dc (3200 V and below) power circuit breakers.

定价： 87元 / 折扣价： 74 元