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This standard contains graphic symbols for representing logic functions or physical devices capable of carrying out logic functions. Descriptions of logic functions, the graphic representation of these functions, and examples of their applications are given. The symbols are represented in the context of electrical applications, but most may also be applied to nonelectrical systems (for example, pneumatic, hydraulic, or mechanical).

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This standard specifies ratings and service conditions, environmental performance and testing requirements for devices with communication functions used with electric power apparatus. Environmental and electromagnetic compatibility (EMC) immunity levels and type-tests simulating environments associated with electric apparatus are described. Acceptance criteria for evaluating device functionality are provided. For devices with communication ports, where the device does not perform protection or… read more control functions, testing of the communication functions is covered by IEEE Std 1613. Where the device performs protection or control functions and has communication ports, tests for all communication functions are covered by the IEEE C37.90 family of standards. read less

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This project develops a set of common functionality for the family of IEEE 1451 smart transducer interface standards. This functionality is independent of the physical communications media. It includes the basic functions required to control and manage smart transducers, common communications protocols, and media-independent TEDS formats. It defines a set of implementation-independent APIs. This project does not specify signal conditioning and conversion, physical media, or how the TEDS data… read more are used in applications. read less

定价： 172元 / 折扣价： 147 元

This standard provides requirements for the software of computer-based Instrumentation and control systems of nuclear power plants performing functions of safety category A as defined by IEC (International Electrotechnical Commission) 61226. This standard provides requirements for the purpose of achieving highly reliable software. It addresses each stage of software development and documentation, including requirements specification, design, implementation, verification, validation and operation.

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