This standard provides methods for performing circuit integrity fire tests on cable systems used in passenger rail and road tunnels.

定价： 59元 / 折扣价： 51 元

This standard covers capacitance current switching requirements for ac high-voltage circuit breakers rated in accordance with methods given in American National Standard Rating Structure for A C High-Voltage Circuit Breakers, C37.04-1964, and listed in American National Standard Schedules of Preferred Ratings and Related Required Capabilities for A C High-Voltage Circuit Breakers, C37.06-1972.2 It is anticipated that the manufacturers of circuit breakers will expend efforts to meet the… read more requirements of these new standards as soon as possible. However, it is recognized that this will require time for completion; users are cautioned to confer with the manufacturer as to whether a specific design meets these standards. Circuit breakers manufactured before the publication date of this standard may not meet its requirements; the manufacturer should be consulted concerning the capacitance current switching capabilities of these earlier designs. read less

定价： 56元 / 折扣价： 48 元

This standard applies to ac high-voltage circuit breakers with rated nominal voltage above 1000 V. It establishes a rating structure, preferred ratings, construction and functional component requirements. This standard encompasses the following: - Three pole circuit breakers used in three-phase systems - Single pole circuit breakers used in single-phase systems - Attachments for these circuit breakers, such as bushings, current transformers, interlocks, shunt trips, etc., and auxiliary equipment sold with the circuit breakers such as closing relays and structural steel supports. This standard does not cover circuit breakers used at frequencies other than 50 Hz or 60 Hz or generator circuit breakers that are covered in IEC/IEEE Std 62271-37-013

定价： 160元 / 折扣价： 136 元

This standard applies to ac high-voltage circuit breakers with rated maximum voltage above 1000 V. It defines various tests that are made on ac high-voltage circuit breakers, except for generator circuit breakers, which are covered in IEC/IEEE 62271-37-013:2015 (formerly IEEE Std C37.013(TM)-1997). It specifies the tests and describes the accepted methods used to verify assigned ratings defined in IEEE Std C37.04(TM). It also describes the test procedures associated with production and field installation. The test procedures are divided into the following classifications: a) Design tests; b) Production tests; c) Conformance tests; d) Field tests. NOTE--Design tests are referred to as “Type” tests, and Production tests are referred to as “Routine” tests in IEC standards.

定价： 152元 / 折扣价： 130 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： 0元 / 折扣价： 0 元

This standard covers the application guide for transient recovery voltage requirements for ac high-voltage circuit breakers rated above 1000 volts and on a symmetrical current basis. The capability limits of these circuit breaker interrupting devices are determined largely by the transient recovery voltages. The guide for application is not included in other existing circuit breaker standards.

定价： 65元 / 折扣价： 56 元

定价： 407元 / 折扣价： 346 元

This standard provides cable and/or system requirements and methods for performing circuit integrity tests on energized low-voltage power, control, and instrumentation cables at temperatures and heat fluxes simulating a hydrocarbon pool fire.

定价： 58元 / 折扣价： 50 元

a. Clause 4.10.4 the ratio of zero and positive sequence currents in single phase capacitive switching procedure should be less than 3.0 rather than greater than 3.0. b. Errors in clause 4.10.9.1.8 and 4.10.9.2.7 regarding reference to the procedure for separate making tests. c. 4.10.9.1.3 change in punctuation for clarity d. Throughout document unify terms for rated voltage, including in equations to use "Ur" rather than "V" f. Clause 4.1.2 i) is missing some words required for clear meaning.… read more g. Correct references and terms used by both C37.04 and C37.09 so they are identical h. Remove classification of tests in the Scope as only design tests are covered. i. Clauses 4.5.7 and 4.5.8.1 to make clear that average of the test impulses shall be equal or higher than rated value j. clarify in 4.8.2.7. which tests to be performed at minimum control voltage k. Correct item list in 4.8.2.3.3 l. Correct title of Figure 3 and correct Figure 4 (example for incorrect grounding condition given) m. Correct arcing window/multiplier in Table 5 n. Correct item list in 4.8.5.4.3 o. correct the steps of electrical degrees for capacitance switching duties in 4.10.9.2.7 (30° for single- and 10° for three phase) p. further minor items depending upon agreement in the WG read less

定价： 0元 / 折扣价： 0 元

This standard covers metal-enclosed low-voltage power circuit breaker switchgear assemblies containing, but not limited to, such devices as low-voltage power circuit breakers (fused or unfused), other interrupting devices, switches, control, instrumentation, and metering, and protective and regulating equipment. This standard is concerned with enclosed, rather than open, indoor and outdoor switchgear assemblies. It includes types of equipment that are part of secondary unit substations. It does not apply to equipment covered by industrial control standards, communication switchboards, communication switching equipment, switchboards for use on board ships, or dead-front distribution switchboards. In this standard, metal-enclosed low-voltage power circuit breaker switchgear shall be called LV switchgear. For LV ac switchgear, the nominal system voltage shall be 1000 Vac or below; for LV dc switchgear, the rated maximum voltage shall be 3200 Vdc or below.

定价： 104元 / 折扣价： 89 元

This standard is applicable to three-pole circuit breakers used in three-phase systems and single-pole circuit breakers used in single-phase systems, both indoor and outdoor AC high-voltage types, rated above 1000 volts on a symmetrical current basis. This standard does not cover circuit breakers used at rated frequencies other than 50 Hz or 60 Hz, or generator circuit breakers that are covered in IEEE Std. C37.013.

定价： 85元 / 折扣价： 73 元

This application guide covers procedures and calculations necessary to apply the standard transient recovery voltage (TRV) ratings for ac high-voltage circuit breakers with rated maximum voltage above 1000 V. The breaking capability limits of these circuit breakers are determined to a great degree by the TRV. This application guide is not included in other existing circuit breaker standards. In this document, the TRV ratings are compared with typical system TRV duties. Examples of TRV… read more calculation are given with suggested options if the TRV duty exceeds the TRV ratings of the circuit breaker. read less

定价： 160元 / 折扣价： 136 元

This application guide for capacitance current switching applies to ac high-voltage circuit breakers rated in accordance with American National Standard Requirements for Capacitance Current Switching for A C High-Voltage Circuit Breakers, C37.073-1972. It is intended to supplement the American National Standard Application Guide for AC High-Voltage Circuit Breakers, C37.010-1972 (IEEE Std 320-1972), and specifically, to enlarge on Section 4.14.3, Capacitor Switching, and Section 4.14.4, Line… read more Charging Switching. Circuit breakers rated and manufactured to meet other standards should be applied in accordance with application procedures adapted to their specific ratings. read less

定价： 65元 / 折扣价： 56 元

The scope of this standard focuses on delay and power calculation for integrated circuit design with support for modeling logical behavior and signal integrity.

定价： 269元 / 折扣价： 229 元

This standard provides cables and cable systems requirements and methods for performing circuit integrity tests on energized low voltage power, control, and instrumentation cables, cable glands and splices at temperatures and heat fluxes simulating a hydrocarbon pool fire.

定价： 56元 / 折扣价： 48 元