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.

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This standard applies to ac adjustable-speed drive (ASD) systems rated above 375 kW and above 750 V output voltage as used in petrochemical and similar applications. It covers the performance requirements for an ASD system including, but not limited to, input transformer or reactor as required, power electronics, control interfaces, cooling system, switchgear, and motor. Requirements for power quality, engineering analysis, start-up assistance, training, and spare parts are also included.… read more Certain items such as the motor, switchgear, or transformer may be excluded from the scope of vendor supply if specified in the data sheets; the system vendor shall specify any special requirements for the excluded equipment. read less

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This standard specifies the service conditions, system configuration, technical requirements, tests and their methods for electric traction system on board high speed Electric Multiple Units (EMUs).

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This document recommends performance characteristics and equipment for electric-hydraulic governors for all types of hydraulic turbines intended to drive electric generators of all sizes. This recommended practice is applicable to new governors and rehabilitation of existing governors.

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This guide specifies the requirement and testing methods for the pantograph off-line, covering the aspects of the mechanics, optics, electro-magnetics, and acoustics. Principles of the data interpretation are also included. In addition, models for the arcing erosion, as well as the off-line induced overvoltage and harmonics, which impact the onsite devices' safety, are included.

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The Specification is limited in scope to the following types of open-cycle gas turbines intended to drive electric generators at constant speed.

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FASTBUS is a standardized modular data-bus system for data acquisition, data processing, and control. A FASTBUS system consists of multiple bus segments that can operate independently, but link together for passing data and other information. FASTBUS can operate asynchronously using a handshake protocol to reliably accommodate different speed devices without prior knowledge of their speed. It can also operate synchronously without handshake for transfer of data blocks at maximum speed.

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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