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  • BS DD158(1987) : 1987

    View superseded by
    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
    View superseded by

    FILTERS FOR MAINS SIGNALLING SYSTEMS

    Available format(s):  Hardcopy, PDF

    Superseded date:  24-01-2002

    Language(s):  English

    Published date:  01-01-1987

    Publisher:  British Standards Institution

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

    Foreword
    Committees responsible
    Specification
    1. Scope
    2. Definitions
    3. Symbols
    4. Marking
    5. Ratings and characteristics
    6. Service conditions
    7. Design and construction
    8. Tests
    Tables
    1. Symbols for identification of terminations
    2. Terminal capacities
    3. Clearances and creepage distances
    4. Sizes of cable for tests
    5. Test voltages
    Figures
    1. Leakage current measurement at operating temperature
         for single-phase connection of filters
    2. Leakage current measurement at operating temperature
         for three-phase connection of filters

    Abstract - (Show below) - (Hide below)

    Lays down requirements for filters for fixed installation in conjunction with mains signalling systems, for the rejection of unwanted mains signals and interference in a.c. circuits having a voltage not exceeding 660 V, a current not exceeding 300 A and mains supply frequencies of 50 Hz to 60 Hz. Does not apply to general purpose filters for electromagnetic interference suppression. Does not apply to filters for use in an atmosphere subject to excessive pollution by smoke, chemical fumes, salt laden spray, prolonged periods of high humidity or other abnormal conditions. Covers definitions, symbols, marking, ratings and characteristics, service conditions, design and construction and tests.

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

    Committee PEL/122
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    BS 7150:1989 Code of practice for intruder alarm systems with mains wiring communication

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

    BS 2011-2.1B:1977 Environmental testing. Tests Tests B. Dry Heat
    BS 6458-2.2(1984) : 1984 FIRE HAZARD TESTING FOR ELECTROTECHNICAL PRODUCTS - METHODS OF TEST - NEEDLE FLAME TEST
    BS 6839-1:1987 Mains signalling equipment. Specification for communication and interference limits and measurements
    BS 2011-2.1Ca:1977 Environmental testing. Tests Test Ca. Damp heat, steady state
    BS 6458-2.1:1984 Fire hazard testing for electrotechnical products. Test methods Glow-wire test
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