This standard defines a resilient packet ring access protocol for use in local, metropolitan, and wide area networks, along with appropriate physical layer specifications for transfer of data packets at rates scalable to multiple gigabits per second.

定价： 415元 / 折扣价： 353 元

This standard establishes specifications for high-voltage (>1000 V) distribution class current-limiting type fuses and associated accessories. All of these devices are intended for use on alternating current (ac) systems. These specifications apply to the following specific types of equipment: a) Distribution class current-limiting type fuses and fuse units b) Distribution class current-limiting fuse disconnecting switches c) Item a) and item b) used in fuse-enclosure packages d) Fuse supports, fuse units, refill units, and fuse mountings of the type intended for use with distribution class current-limiting type fuses, and fuse disconnecting switches. e) Disconnecting devices created by the use of a removable switch blade in a distribution class current-limiting type fuse support.

定价： 84元 / 折扣价： 72 元

This guide covers the application, specification, theory of operation, and factory and field testing of singlephase and three-phase oil-immersed, phase-shifting transformers (PSTs). This guide is limited to matters particular to PSTs and does not include matters relating to general requirements for power transformers covered in existing standards, recommended practices, or guides.

定价： 132元 / 折扣价： 113 元

This standard applies to series-connected dry-type air-core single-phase and three-phase outdoor or indoor reactors of distribution and transmission voltage class that are connected in the power system to control power flow under steady-state conditions and/or limit fault current under short-circuit conditions. Dry-type air-core reactors covered by this standard are self-cooled by natural air convection. With some restrictions, this standard is applicable to filter reactors, shunt capacitor… read more reactors (used with shunt capacitor banks), and discharge current-limiting reactors (used with series capacitor banks). Annex A, Annex B, and Annex C are included to provide guidance. This standard does not apply to devices such as a) Shunt reactors (see IEEE Std C57.21(TM)-2008) b) Arc suppression coils c) Neutral grounding devices (see IEEE Std 32(TM)-1972 [B21]) d) Line resonant reactors e) High-voltage direct current (HVDC) smoothing reactors (IEEE Std 1277(TM)-2010 [B23]) f) Forced cooled reactors g) Line traps and radio interference (RI) filter reactors (ANSI C93.3-1995) read less

定价： 175元 / 折扣价： 149 元

To aid in the interpretation and application of the impulse testing requirements of the IEEE Standard Test Codes for Transformers.

定价： 169元 / 折扣价： 144 元

定价： 483元 / 折扣价： 411 元

This guide provides information on the application, operation, and coordination of high-voltage (>1000 V) fuses and associated equipment. The information supplements that presented in IEEE Std C37.48(TM). These guidelines apply to the following specific types of equipment, intended for use on alternating current distribution and power class systems: a) Distribution and power class current-limiting type fuses. b) Distribution and power class current-limiting fuse disconnecting switches. c)… read more Items a) and b) used in fuse enclosure packages. d) Fuse supports of the type intended for use with distribution and power class fuses, and fuse disconnecting switches. e) Disconnecting devices created by the use of a removable switch blade in a distribution or power class fuse support. f) Distribution class and power class current-limiting, and combination types of external capacitor fuses used with a capacitor unit, groups of units, or capacitor banks. g) Backup current-limiting fuses ("motor-starter fuses") used in conjunction with high-voltage Class E2 motor starters (see ANSI/UL 347 [B1]2). read less

定价： 151元 / 折扣价： 129 元

The scope of this standard is to establish minimum performance criteria and test requirements for four categories of alarming electronic radiation measurement instruments used to manage exposure by alerting the emergency responders when they are exposed to photon radiation. The instruments provide rapid and clear indication of the level of radiation exposure and/or exposure rate and readily recognizable alarms. The alarms are both audible and visual, and distinguishable between exposure rate… read more and exposure. Vibratory alarms are optional. Emergency responders include fire and rescue services, law enforcement, and medical services. Other possible users include Critical Infrastructure Key Resources (CIKR) such as heavy equipment, transportation, and utilities personnel. read less

定价： 99元 / 折扣价： 85 元

This International Standard contains requirements for application of the IEC/IEEE 62582-series of methods for condition monitoring in electrical equipment important to safety of nuclear power plants. It also includes requirements which are common to all methods. The IEC/IEEE 62582-series of standards specify condition monitoring methods in sufficient detail to enhance the accuracy and repeatability, and provide standard formats for reporting the results. The methods specified are applicable to… read more electrical equipment containing organic or polymeric materials. Some methods are especially designed for the measurement of condition of a limited range of equipment whilst others can be applied to all types of equipment for which the organic parts are accessible. Although the scope of the standards in the IEC/IEEE 62582-series is limited to application of instrumentation and control systems important to safety, the condition monitoring methods may be applicable also to other components which include organic or polymeric materials. Standards in the IEC/IEEE 62582-series are measurement standards, primarily for use in the management of ageing in initial qualification and after installation. For technical background of condition monitoring methods, reference is made to other IEC standards, e.g. IEC 60544-5. Information on the role of condition monitoring in qualification of equipment important to safety is found in IEEE Std 323. General information on management of ageing can be found in IEC 62342 and IEEE 1205. NOTE - The procedures defined in the IEC/IEEE 62582-series are intended for detailed condition monitoring. A simplified version of the procedures may be appropriate for preliminary assessment of the need for detailed measurements. read less

定价： 80元 / 折扣价： 68 元

This standard defines a collection of VHDL 1076.1 packages, compatible with IEEE Std 1076.1(TM),along with recommendations for conforming use, in order to facilitate the interchange of simulation models of physical components and subsystems. The packages include the definition of standard types, subtypes, natures, and constants for modeling in multiple energy domains (electrical, fluidic, mechanical, etc.) The packages are intended for use primarily in the modeling of multiple energy domain systems. The range of operation of the packages is not defined in this standard, but is intended to be valid across a wide range of disciplines and applications.

定价： 87元 / 折扣价： 74 元

This standard defines a method for exchange of synchronized phasor measurement data between power system equipment. It specifies messaging including types, use, contents, and data formats for real-time communication between phasor measurement units (PMU), phasor data concentrators (PDC), and other applications.

定价： 109元 / 折扣价： 93 元

This guide describes significant aspects of handling SF6 gas used in electric power equipment, such as gas recovery, reclamation, and recycling, in order to keep the gas permanently in a closed cycle and to avoid any deliberate release into the environment.

定价： 106元 / 折扣价： 91 元

定价： 286元 / 折扣价： 244 元

定价： 437元 / 折扣价： 372 元

This part of ISO/IEC/IEEE 21451 defines communication methods and data formats for transducers (sensors and actuators) communicating with RFID tags. This part of ISO/IEC/IEEE 21451 also defines Transducer Electronic Data Sheet (TEDS) formats based on the ISO/IEC/IEEE 21451 series of standards and protocols for accessing TEDS and transducer data. It adopts necessary interfaces and protocols to facilitate the use of technically differentiated, existing technology solutions. It does not specify… read more transducer design or signal conditioning. There is currently no openly defined independent interface standard between transducers and RFID tags. Each vendor builds its own interface. Without such a standard, transducer interfacing and integration to RFID tags and systems are time-consuming and all vendors' duplicated efforts are economically unproductive. The purpose of this part of ISO/IEC/IEEE 21451 is to provide interfaces and methods for interfacing transducers to RFID tags and reporting transducer data within the RFID infrastructure. It also provides the means for device and equipment interoperability. read less

定价： 235元 / 折扣价： 200 元