• BS 7404-3:1991

    Current The latest, up-to-date edition.

    Telecontrol equipment and systems Specification for interfaces (electrical characteristics)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-10-1991

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    National foreword
    1. Scope
    2. Object
    3. Types of information
    4. Interface between telecontrol equipment and process
    5. Interface between telecontrol equipment and
         operator's equipment
    6. Interfaces between telecontrol equipment and
         communication subsystems
    7. Interface between telecontrol equipment and other
         data processing equipment
    ZA. Other international publications quoted in this
         standard with the references of the relevant
         European publications (normative)
    1. Examples of relationships between signals and types
         of information
    2. Nominal voltages for binary signals
    3. Current classes for binary input signals
    4. Current classes for binary output signals
    5. Nominal values for analog signals
    6. Interference voltage limits and insulation
         requirements for binary signals
    7. Interference voltage limits and insulation
         requirements for analog signals
    8. Active binary input signals
    9. Passive binary input signals
    10. Passive binary output signals
    11. Active binary output signals
    12. Analog input and output signals
    13. Relationship between physical distance (DCE/DTE)
         and maximum transmission speed
    14. CCITT, ISO and EIA recommendations/standards for
         CDE-DTE interfaces
    1. Interfaces between modules in a typical telecontrol
    2. Level ranges of binary signals
    3. Parameters of a binary signal
    4. Level ranges of analog signals
    5. Binary input circuits:
    5a. Active binary input circuit
    5b. Passive binary input circuit
    6. Binary output circuits:
    6a. Passive binary output circuit
    6b. Active binary output circuit
    7. Analog input and output circuits:
    7a. Analog input circuit
    7b. Analog output circuit

    Abstract - (Show below) - (Hide below)

    Defines electrical interface characteristics, e.g. signals, impedances, etc. which have to be met at the shared boundaries.

    Scope - (Show below) - (Hide below)

    This series of standards applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and controlling geographically widespread processes.

    General Product Information - (Show below) - (Hide below)

    Committee PEL/57
    Development Note Also numbered as IEC 60870-3 Supersedes 89/27225 DC (10/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 7404-1.1:1991 Telecontrol equipment and systems. General considerations. General principles
    BS EN 60870-2-1:1996 Telecontrol equipment and systems. Operating conditions Power supply and electromagnetic compatibility
    BS EN 60870-2-2:1997 Telecontrol equipment and systems. Operating conditions Environmental conditions (climatic, mechanical and other non-electrical influences)
    BS 7602:1992 Guide to general considerations for telecommunication services for electrical power systems

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 4902:1989 Information technology Data communication 37-pole DTE/DCE interface connector and contact number assignments
    IEC 60225:1966 Octave, half-octave and third-octave band filters intended for the analysis of sounds and vibrations
    BS 6146-2:1981 An interface system for programmable measuring instruments (byte serial, bit parallel) Guide for code and format conventions
    IEC 60495:1993 Single sideband power-line carrier terminals
    BS 7404-4:1991 Telecontrol equipment and systems. Specification for performance
    IEC 60050-371:1984 International Electrotechnical Vocabulary (IEV) - Part 371: Telecontrol
    BS 6146-1:1981 An interface system for programmable measuring instruments (byte serial, bit parallel) Specification for functional, electrical and mechanical requirements, system applications and requirements for designer and user
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