The scope of this recommended practice is to characterize the surge environment at locations on ac power circuits described in IEEE Std C62.41.1 by means of standardized waveforms and other stress parameters. The surges considered in this recommended practice do not exceed one half-cycle of the normal mains waveform (fundamental frequency) in duration. They can be periodic or random events and can appear in any combination of line, neutral, or grounding conductors. They include surges with… read more amplitudes, durations, or rates of change sufficient to cause equipment damage or operational upset. While surge protective devices (SPDs) acting primarily on the amplitude of the voltage or current are often applied to divert the damaging surges, the upsetting surges might require other remedies. read less

定价： 70元 / 折扣价： 60 元

定价： 61元 / 折扣价： 52 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 standard applies to all overhead, pad-mounted, dry-vault, and submersible single-pole or multipole alternating current automatic line sectionalizers for rated maximum voltages above 1000 Vac. In order to simplify the vocabulary of this standard, the term sectionalizer has been substituted for automatic line sectionalizer wherever possible.

定价： 141元 / 折扣价： 120 元

Review entire document. Revise waveform tolerance to coordinate with IEC documents. Add new waveforms, such as 10/350 us, if found appropriate.

定价： 146元 / 折扣价： 125 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

This document describes very low frequency (VLF) testing of ac electric machines. It covers acceptance testing of new machines in the factory or on-site after erection. Also covered is the routine maintenance testing of machines that have been in service. In order to facilitate communication and comparison among investigators, this document recommends that the VLF used be 0.1 Hz ±10%. For ac electric machines, voltages between 3.3 kV to 30 kV are considered to be high voltage machines.

定价： 59元 / 折扣价： 51 元

This document provides recommendations for electromagnetic field measurement locations, procedures, and results evaluation for corridors containing both alternating current (ac) and direct current (dc) overhead transmission lines. This document primarily addresses application of parallel ac and dc lines that are in close proximity either on separate or shared structures.

定价： 68元 / 折扣价： 58 元

1.1 Scope This standard covers ac switches rated above 1 kV up to and including 52 kV for use in metal-enclosed switchgear. These switches may be: a) Stationary or drawout b) Manual or power operated c) Fused or unfused Within this standard, the words "switch(es)" shall be considered to mean three-phase, ac, gang-operated, switch(es) as defined by this scope. These switches are intended to be installed in an enclosure that provides a degree of protection to the switch and the enclosure may be… read more suitable for indoor or outdoor conditions and complies with the requirements of switchgear assemblies as defined by IEEE Std C37.20.2, IEEE Std C37.20.3, or IEEE Std C37.20.9. This standard does not apply to switches for use in subsurface or pad-mounted switchgear in IEEE Std C37.74 or to high-voltage air switches in IEEE Std C37.30.1. read less

定价： 67元 / 折扣价： 57 元

This recommended practice outlines a test procedure for comparing expected life, at rated temperature, of two or more sealed insulation systems. The procedure is limited to insulation systems for ac electric machines using random-would stator coils. It is the intent of this procedure to evaluate insulation systems for use with air cooling under severe environmental conditions where the insulation is exposed to conducting contaminants. It does not cover special requirements such as those for… read more machines enclosed in gas atmospheres, subjected to strong chemicals, or to submersion in liquids. The procedure includes instructions for the following: (b)Testing candidate systems in comparison with known systems having a proven record of service experience (b)Interpretation of the results read less

定价： 141元 / 折扣价： 120 元

This guide describes three methods used in the measurement of the power factor of inductive low-voltage (1000 V and lower) test circuits. These methods may be used at any frequency; however, the values in the tables are specifically for 60-Hz test circuits. These methods are as follows: a) Ratio method; b) DC decrement method; c) Phase relationship method. Table 1 lists the preferred methods to be used for different levels of test currents and for different levels of power factor. While this… read more guide is primarily intended for use on low-voltage test circuits, the methods discussed are also usable at higher voltages. read less

定价： 56元 / 折扣价： 48 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 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