This standard provides a checklist and selected guidance, for persons not normally practicing in this specialized field, of major technical design areas that should be considered when interconnecting user-owned and utility-owned facilities at substations. Only medium- and high-voltage purchased-power interconnections are addressed. This guide does not discuss the considerable implications of interactive power systems design and operation, nor does it present criteria or directions for the design of substations.

定价： 162元 / 折扣价： 138 元

This standard pertains to electronics wide-band transformers transmitting power within a wide band of frequencies covering typically at least one decade in the frequency spectrum. It is not intended to apply to transformers optimized to operate within a narrow band of frequencies. Transformers used in, or in conjunction with, wire line communication facilities serving power stations are excluded due to the special protection requirements involved. Provision is made for including data for use in… read more the design of feedback amplifiers and control networks, or other circuits in which the knowledge of the transformer amplitude and phase frequency response is needed by the system designer. These transformers are required to transform voltage within specified tolerances of amplitude and phase when operating between specified impedances. Guides to application and test procedures are included. The annexes within this standard contain certain precautions and recommended practices. This standard also pertains to hybrid transformers, primarily used in the telecommunications industry. The hybrid transformer is a wide-band transformer used in a manner which makes it part of a capacitance, resistance, and/or inductance network, and it must have characteristics which permit it to match the network for proper overall performance. read less

定价： 143元 / 折扣价： 122 元

This guide contains instructions for modeling synchronous machines in direct- and quadrature-axis equivalent circuits, along with the basic transient and subtransient reactance/time-constants model in view of stability studies. It discusses assumptions made in using various models and presents the fundamental equations and concepts involved in generator/system interfacing. The manner in which generator saturation is treated in network studies, both in the initialization process as well as… read more during large or small disturbance stability analysis procedures is addressed. Approaches for improving the accuracy of field and excitation system quantities are identified and conversion factors are given for transferring field parameters from one base to another for correct generator/excitation system interface modeling. Parameter determination and translation from equivalent-circuits to operational impedances or vice-versa is covered. Data analysis methods for obtaining these parameters using measurements from field tests or finite-element computations are explained and illustrated with a wide range of generator and test data. However, this guide refers to applicable standards (such as IEEE Std 115) or contract specification for scheduling such tests. Also, this guide does not attempt to recommend specific procedures for machine representation in non-standard or atypical cases such as generator tripping and overspeed operation or models for harmonics or unbalanced operation. read less

定价： 104元 / 折扣价： 89 元

This recommended practice covers the sizing of nickel-cadmium batteries used for standby operation in stationary applications. Recommendations are provided for applications including, but not limited to, generating stations, substations, telecommunications, switchgear and control systems, compressor stations, emergency lighting, and uninterruptible power supplies. Guidance is provided for sizing for engine-starting applications. The following topics are beyond the scope of this document: Installation, maintenance, qualification, and testing procedures; Consideration of battery types other than nickel-cadmium; Renewable energy systems (e.g., wind turbines and photovoltaic systems) that may provide only partial or intermittent charging; Design of the dc system and sizing of the battery charger(s)

定价： 81元 / 折扣价： 69 元

定价： 75元 / 折扣价： 64 元

This document is intended to establish a basic philosophy and guidelines for the design and implementation of monitoring systems for cylindrical rotor, synchronous turbine generators. Monitoring systems are used to display the status of the generator and auxiliary systems while these systems are operating on line. This document does not specify actual equipment or instrumentation, but it does indicate some critical areas where it is important to provide monitoring capability. Generator-protection techniques are not discussed in this document. There is a fine line of distinction between instrumentation that is used for monitoring and instrumentation used for protection, and there are many instruments that play a dual role. The purpose of monitoring is to provide information to the operator to guide appropriate action. This action may be maintenance planning, maintaining load, tripping the unit, or load reduction. The key distinction between monitoring and protection is that with monitoring, the action taken (if any) is not automatic but is initiated by the operator. Some users may choose to include some of the items listed here as part of the generator-protection scheme. Monitoring of basic generator parameters is routinely performed on commercial generators. It is only recently, however, that the economics of power generation has created the need, and advancing technology provided the ability, to monitor nearly all aspects of generator operation. This should allow the operation of large-capacity machines with increased reliability and availability and with reduced downtime for outages. However, care must be exercised to avoid "overmonitoring." While there is no doubt that great quantities of data may be useful to review when (and if) time permits, the operator should not be subjected to an overload of unessential data. The use of diagnostic systems may facilitate handling of multitudinous data to assist the operator. This document provides the basic information needed to choose the monitoring schemes that are best suited for each application. Not all items discussed in this document are necessary for all generators. Some users may wish to add additional monitoring systems beyond those presented in this document. The user should refer to the manufacturer's monitoring recommendations

定价： 150元 / 折扣价： 128 元

定价： 53元 / 折扣价： 46 元

Scope. This guide is based on the knowledge and experience of manufacturers, researchers, and end users of nonceramic insulating products that are electrically stressed in outdoor environments. The guide discusses the characteristics of nonceramic materials that are needed for long-term reliability in these applications. The guide makes recommendations for principles of evaluation and tests used in the screening and selection of materials. The judicious use of this guide will significantly… read more improve the probability of success in the applications selected. However, it should be recognized that the application on nonceramics to outdoor electrical insulation is an extremely demanding and complex problem. In any specific application, judgment and experience is required to analyze and balance the many tests and characteristics which are discussed to obtain satisfactory performance and reliability. Since the primary objective of accelerated aging is the prediction of material performance prior to its application and the development of an actual service history, accelerated aging tests should, within a short time, attempt to duplicate the effects of long-term exposure in the field. Extreme reductions in the time to failure are accomplished by increasing the intensity of one or more of the destructive forces of normal operation. For example, increased electrical stress, higher temperature, water immersion, or intense ultraviolet rays, are often used. The acceleration in the time base depends on the type of accelerated aging performed and can vary from a factor of 10 to 350 (1000 h vs 40 yr). read less

定价： 53元 / 折扣价： 46 元

This Recommended Practice offers users assistance in controlling or modifying the inductive environment and the susceptibility of affected wire-line telecommunications facilities in order to operate within the acceptable levels of steady-state or surge-induced voltages of the environmental interface (probe wire) defined by IEEE Std 776(TM). The methodology, application, and evaluation of results for mitigative techniques or devices in general are addressed for all Specific Type A and Specific… read more Type B coordination methods also defined by IEEE Std 776. read less

定价： 83元 / 折扣价： 71 元

This standard covers the fundamental metrology for describing random instabilities of importance to frequency and time metrology. Quantities covered include frequency, amplitude, and phase instabilities; spectral densities of frequency, amplitude, and phase fluctuations; and time-domain deviations of frequency and phase fluctuations. In addition, recommendations are made for the reporting of measurements of frequency, amplitude, and phase instabilities, especially with regard to calculation… read more techniques, but also including experimental parameters. The annexes cover basic concepts and definitions, time prediction, and confidence limits when estimating deviations and spectral densities from a finite data set. The annexes also cover translation between the frequency domain and time domain instability measures, examples on how to calculate the time-domain measures of frequency and phase fluctuations, and an extensive bibliography of the relevant literature. Systematic instabilities, such as environmental effects and aging, are discussed in IEEE Std 1193 [B39] read less

定价： 81元 / 折扣价： 69 元

This standard covers instructions for conducting and reporting the more generally applicable and acceptable tests to determine the performance characteristics of single-phase induction motors. It is not intended that this standard shall cover all possible tests used in production or tests of a research nature. The standard shall not be interpreted as requiring the making of any or all of the tests described herein in any given transaction.

定价： 82元 / 折扣价： 70 元

This standard provides procedures for the measurement of electric and magnetic fields in close proximity to video display terminals (VDTs) in the frequency range of 5 Hz to 400 kHz. This standard adapts existing international measurement technologies [B7] and practices to achieve a consistent and harmonious VDT measurement standard for testing in a laboratory controlled environment. Such measurements are needed for investigative studies that rely on the knowledge of electric and magnetic field… read more levels near electronic equipment. The requirements of the controlled laboratory test environment in which the characteristics specified in this standard are to be tested are difficult to establish at a user's installation. Therefore, it is recognized that the results obtained in the laboratory may be difficult to reproduce in the on-site environment. This standard does not provide measurements at specific frequencies, but does provide one measurement for each of two frequency bands: 5 Hz to 2 kHz and 2 kHz to 400 kHz read less

定价： 151元 / 折扣价： 129 元

This Recommended Practice provides safety precautions, installation design considerations, and procedures for commissioning, maintenance, and storage of pocket and fiber-plate nickel-cadmium storage batteries for photovoltaic (PV) power systems. Disposal and recycling recommendations are also discussed. While this document gives general recommended practices, battery manufacturers can provide specific instructions for battery installation and maintenance.

定价： 87元 / 折扣价： 74 元

This standard defines a high speed test access port for delivery of test data, a packet format for describing the test payload, and a distribution architecture for converting the test data to/from on-chip test structures. The standard re-uses existing high speed I/O (HSIO) known in the industry for the high speed test access port (HSTAP). The HSIO connects to an on-chip distribution architecture through a common interface. The scope includes the distribution architecture test logic and packet decoder logic. The objective of the distribution architecture and packet decoder is that it can be readily re-used with different integrated circuits (ICs) that host different HSIO technology, such that the standard addresses as large a part of the industry as possible. The scope includes IEEE 1149.1 Boundary-Scan Description Language (BSDL) and Procedural Description Language (PDL) documentation, which can be used for configuring a mission mode HSIO to a test mode compatible with the HSTAP. The same BSDL and PDL can then be used to deliver high-speed data to the on-chip test structures.

定价： 104元 / 折扣价： 89 元

This standard defines a mixed-signal test bus architecture that provides the means of control and access to both analog and digital test signals such that the testability structure for digital circuits described in IEEE Std 1149.1-2001 has been extended effectively to provide similar facilities for mixed-signal circuits. In addition to testing of interconnections in the conventional sense of IEEE Std 1149.1-2001, the mixed-signal test bus defined by this standard also provides the means for… read more parametric testing and, optionally, the means to access internal test structures. The standard does not mandate implementation details of the test circuitry, although examples of conformant implementations are given for illustration. Further, the standard develops extensions to Boundary-Scan Description Language (BSDL) as a means of describing key aspects of the implementation of this standard within a particular component. At present, the extensions to BSDL defined by this standard specifically omit the description of any and all analog parameters defined by the standard. read less

定价： 242元 / 折扣价： 206 元