Standards

This part of the IEC 61508 contains the definitions and explanation of items that are used in part 1 to 7 of the standard 1.1 The definitions are grouped under general headings do that related terms can be understood within the content of each other . But it should be noted that these headings are not intended to add meaning to the definitions , and in this sense the headings should be disregarded.

This standard of IEC 61508 provides information -the underlying concepts of risk and the safety integrity levels for the E/E/PE safety -related systems , other technology safety-related systems and external risk reduction facilities to be determination (see annexes B, C, D, and E)

This part of IEC 61508 contains an overview of various safety techniques and techniques and measures relevant to IEC 61508 and IEC 61508 -3

This part of IEC 61508 contains information and guidelines on IEC 61508-2 IEC 61508-3 - Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3 and sets out the functional steps in their application.

This International standard gives requirements for the specification , design, installation, operation and maintenance of a safety instrumented system, so that it can be confidently entrusted to place and /or maintain the process in a safe state. This standard has been developed as a process sector implementation of IEC 61508.

This part of IEC 61606 specifies the basic measurement methods of a linear PCM signal for an audio part of personal computers (PCs) and applies to both desktop and portable computers. The common measuring conditions and methods are described in IEC 61606-1 specific conditions and methods of measurement for PCs are given in this standard.

This part of IEC 61754 defines the standard interface dimensions for type MU family of connectors. This parent for type connector family is a miniature single - position pug which is characterized by a cylindrical , spring -loaded butting ferrule (s) of a 1.25 mm typical diameter, and a push -pull coupling mechanism . The optical alignment mechanism of the connectors is of a rigid hole or a resilient sleeve style.

This part of IEC 61755 covers single mode optical interfaces. It includes reference , document structure details , definitions, preferred grades and the rules under which an optical interface is created. This standard defines the location of the fiber core in relation to the datum target and the following key parameters. lateral offset, end face separation end face angle end face angle end face high index layer condition. It also defines standardized test methods where appropriate.

This part of IEC 61755 covers single mode optical interfaces. It includes references, documents structure details. definitions , preferred graces and the rules under which an which an optical interface is created. This standard defines the location of the fiber core in relation to the datum target and the following key parameters: lateral offset, end face separation , end face angle, end face high index layer condition . It also defines standardized test methods where appropriate.

This part of IEC 61850 specifies the specific communication service mappings for the communication between bay and process level and if specifies a mapping on a serial unidirectional multidrop point point to point link in accordance with IEC 60044-8. This part of IEC 61850 specifies a mapping of the abstract service for the transmission of sampled values ( as defined in IEC 61850-7-2 ) on a serial unidirectional multidrop point link in accordance with IEC 60044-8. It applies to the communication between merging units of electronic current (ECT) or voltage-transformers (EVT) and bay devices such as protection relays. If higher requirements on sampling rate. further sampling measured value data sets in addition to the universal data set. inter-bay communication and synchronization apply, these will be covered by IEC 61850-9-2 Figure 1 show the schematics of this interface.