This recommended practice covers temperature rise test procedures for determining those thermal characteristics of power transformers needed to appraise the transformer's load carrying capabilities at specific loading conditions other than rated load.

定价： 66元 / 折扣价： 57 元

This guide is applicable to the detection and location of sources of acoustic emissions (AEs) from partial discharges (PDs) and other sources in power transformers and power reactors. There are descriptions of acoustic instrumentation, test procedures, and interpretation of results.

定价： 106元 / 折扣价： 91 元

This guide is applicable to the methods of Dielectric Frequency Response (DFR) of liquid-immersed transformers. The guide includes recommendations for instrumentation, procedures for performing the tests, and techniques for analyzing the data. This guide can be used in both field and factory applications

定价： 104元 / 折扣价： 89 元

This standard defines a physical layer (PHY) and medium access control (MAC) sublayer for short-range optical wireless communications (OWC) in optically transparent media using light wavelengths from 10 000 nm to 190 nm. The standard is capable of delivering data rates sufficient to support audio and video multimedia services and also considers mobility of the optical link, compatibility with various light infrastructures, impairments due to noise and interference from sources like ambient light, and a MAC sublayer that accommodates the unique needs of visible links as well as the other targeted light wavelengths. It also accommodates optical communications for cameras where transmitting devices incorporate light-emitting sources and receivers are digital cameras with a lens and image sensor. The standard adheres to applicable eye safety regulations.

定价： 370元 / 折扣价： 315 元

This standard specifies radio technology independent methods for network-based coexistence among dissimilar or independently operated networks of unlicensed devices and dissimilar unlicensed devices. The standard is defined for geolocation-capable devices operating under general authorization such as television white spaces (TVWS), the 5 GHz license-exempt bands, and the general authorized access in the 3.5 GHz bands.

定价： 369元 / 折扣价： 314 元

The terms and definitions in the standard are intended to encompass the products within the scope of the IEEE C37 list of power switchgear standards for high-voltage circuit breakers (above 1000 Vac and 3200 Vdc) and for reclosers and other distribution equipment (above 1000 Vac to 38,000 Vac) as used primarily in connection with generation, transmission, distribution, and conversion of electric power. For terms not defined within this standard, the definitions within IEEE Std C37.20.10 apply.

定价： 57元 / 折扣价： 49 元

This document provides standard requirements for interrupter switches, interrupters, or interrupting aids used on or attached to switches rated for high-voltage ac above 1000 V and used indoors, outdoors, or in enclosures for non-fault current interrupting for which an interrupting duty is assigned. This standard covers preferred ratings, construction, application, loading, installation, operation, and maintenance guidelines. This standard does not apply to load-break separable insulated connectors, circuit breakers, circuit switchers, metal-enclosed switchgear, pad-mounted switchgear, reclosers, sectionalizers or other switching devices that are covered by other IEEE standards.

定价： 57元 / 折扣价： 49 元

This standard provides the test code for switching (except capacitive current) and fault making tests for high voltage interrupter switches, interrupters or interrupter aids for use on switches rated above 1000 V ac and used indoors, outdoors, or in enclosures for non-fault current interrupting for which an interrupting duty is assigned.

定价： 66元 / 折扣价： 57 元

The terms and definitions in this standard cover all high-voltage enclosed and non-enclosed, indoor and outdoor air switches rated in excess of 1000 V used primarily in connection with generation, transmission, distribution, and conversion of electric power. This includes such switch types as disconnect, horn-gap, fault initiation, and ground for manual or power operation. The following switch types are not covered by this standard: distribution cutouts fitted with disconnecting blades, and… read more switches used in metal-enclosed and pad-mounted switchgear. This standard also does not apply to load-break separable insulated connectors, circuit-breakers, circuit-switchers, or reclosers. read less

定价： 57元 / 折扣价： 49 元

This standard covers the electrical, dimensional, and related special requirements for high current rating power transformer bushings located within bus enclosures that have rated continuous current in excess of 5000 A. Bushings covered by this standard are intended for use as components of liquid-filled transformers including, but not limited to, generator step-up (GSU) transformers.

定价： 57元 / 折扣价： 49 元

The IEEE C62.42(TM) guide series covers surge protective components (SPCs) used in power and telecom surge protective devices (SPDs) and equipment ports. This part on high-frequency signal isolation-transformer technology SPCs covers: Component construction; Characteristics; Ratings; Application examples

定价： 66元 / 折扣价： 57 元

This recommended practice is intended to: a) Identify preferred or optional immunity test methods. b) Describe specific measurement techniques. c) Suggest product performance criteria as applicable to general and specific products. d) Identify test instrumentation specifications.

定价： 104元 / 折扣价： 89 元

This standard establishes a normative definition of communication between devices containing a power source (agents) and managers (e.g., cell phones, personal computers, personal health appliances, set-top boxes) in a manner that enables plug-and-play interoperability. Using existing terminology, information profiles, application profile standards, and transport standards as defined in other ISO/IEEE 11073 standards, this standard defines a common core of communication functionality of personal… read more health devices (PHDs) containing a battery, including: 1) current device power status (e.g., on mains or on battery); 2) power charge status (e.g., percent of full charge); and 3) estimated time remaining (e.g., minutes). read less

定价： 104元 / 折扣价： 89 元

This document supports the needs of users for consistent, complete, accurate, and usable information. It provides requirements for strategy, planning, managing, staffing, translation, production, and quality and process-maturity assessment for managers of information for users. It specifies processes and procedures for managing information for users throughout the product- or systems-development life cycle. It also includes requirements for key documents produced for managing information for… read more users, including strategic and project plans. read less

定价： 104元 / 折扣价： 89 元

This International Standard specifies requirements for a quality management system when an organization: a) needs to demonstrate its ability to consistently provide products and services that meet customer and applicable statutory and regulatory requirements, and b) aims to enhance customer satisfaction through the effective application of the system, including processes for improvement of the system and the assurance of conformity to customer and applicable statutory and regulatory… read more requirements. All the requirements of this International Standard are generic and are intended to be applicable to any organization, regardless of its type or size, or the products and services it provides. NOTE 1 In this International Standard, the terms "product" or "service" only apply to products and services intended for, or required by, a customer. NOTE 2 Statutory and regulatory requirements can be expressed as legal requirements. Annex A (informative) provides a table pointing to additional guidance in the implementation of ISO 9001:2015, available in ISO/IEC JTC 1/SC 7 and ISO/TC 176 International Standards. The guidelines provided in this International Standard are not intended to be used as assessment criteria in quality management system registration/certification. read less

定价： 104元 / 折扣价： 89 元