This recommended practice outlines a test procedure for the evaluation of the impulse voltage capability of insulation systems of form-wound alternating current rotating electrical machinery. This test procedure forms a base for the accumulation, analysis, and reporting of information concerning impulse voltage withstand strength of ground and turn insulation, both new and aged. The immediate goal is a better understanding of relevant aging mechanisms; the ultimate aim of this document is to… read more aid in estimating life of an insulation system under speciÞed service conditions. It must be emphasized that this test procedure is intended, at this time, for trial use. Future revisions, made after experience with it, should result in more deÞnitive speciÞcations being possible. This procedure recommends the use of multi-factor aging tests, combining thermal and electrical aging in order to address the withstand capability of micaceous insulation. Variations of this procedure may be tried, such as for voltage ratings other than 6.9 kV and 13.8 kV, for turn insulations other than mica, and for various impulse wave forms. The procedure is primarily directed toward providing a qualification test for the turn insulation in regard to its ability to withstand impulses that might be impressed on the terminals of a machine and that result from switching surges, lightning, or other disturbances. It will also provide information on the ability of the ground insulation to withstand impulses. In addition, the test model used in the tests described herein will be suitable for testing the strand insulation, if that is desired, although it is not a function of this qualiÞcation test procedure. read less

定价： 55元 / 折扣价： 47 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

This guide provides recommendations for the in-service visual inspection, use, care, maintenance, and electrical testing of conductive clothing, including suits, gloves, socks, and boots, for use during linework on voltages up to 765 kV ac and ±750 kV dc. Testing pertains only to nondestructive electrical tests that can be performed periodically to check if there is any reduction in the conductivity of the clothing.

定价： 55元 / 折扣价： 47 元

This guide applies to DC link type, AC adjustable speed drives (ASDs) as illustrated in Figure 1-1 and does not address other drive systems such as cycloconverters. The guide is intended to cover the application of drive systems for use in electric power generation stations designed for connection to electric service rated between 2400 volts and 13,800 volts. The guide includes ASD terminology, theory of operation, and a discussion of the factors that can influence equipment selection. It also… read more defines drive system classifications and addresses typical applications. Drive system design considerations, and the interactions between the ASD and the supply system and the driven load are also discussed. Finally, guidance on ASD specifications and installation are provided. read less

定价： 172元 / 折扣价： 147 元

This standard provides preferred ratings for indoor AC medium-voltage switches used in metal-enclosed switchgear.

定价： 75元 / 折扣价： 64 元

This is a guide for the in-service visual inspection, use, care, maintenance, and electrical testing of conductive clothing, including suits, gloves, socks, boots, bondings and face-screen for use during: -- Live work on voltages 765 kV AC (Type 1) and below -- Live work on voltage 750 kV DC (Type 1) and below -- Power frequency AC induction protection (Type 2) This compilation of many accepted practices is presented specifically in the form of a guide to be used by those utilities that are… read more seeking guidance in establishing methods and procedures for the use, care, maintenance, and testing of conductive clothing. read less

定价： 86元 / 折扣价： 74 元

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 guide applies to single- and three-phase 50 Hz and 60 Hz MCCs rated not more than 600 V ac or 1000 V dc. The recommendations within this guide augment the existing requirements of applicable MCC standards (NEMA ICS 18 and UL 845/ NMX-J-ANCE/CSA C22.2 No. 254, collectively referred to as "base MCC standards"). In addition, this guide provides recommendations for electrical system design to help improve safety of the motor control system. The recommendations in this guide should be used in… read more conjunction with safety requirements and procedures as stipulated by appropriate workplace safety standards, site practices and procedures, and manufacturers' instructions. read less

定价： 81元 / 折扣价： 69 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 single- and three-phase 50 Hz and 60 Hz Motor Control Centers (MCCs) rated not more than 600 V ac or 1000 V dc. The recommendations within this guide augment the existing requirements of applicable MCC standards (NEMA ICS 18 and UL 845/ NMX-J-ANCE/CSA C22.2 No. 254, collectively referred to as "base MCC standards"). In addition, this guide provides recommendations for electrical system design to help improve safety of the motor control system. The recommendations in this… read more guide should be used in conjunction with safety requirements and procedures as stipulated by appropriate workplace safety standards, site practices and procedures, and manufacturers' instructions. read less

定价： 71元 / 折扣价： 61 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 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