• BS 5266-3:1981

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    EMERGENCY LIGHTING - SPECIFICATION FOR SMALL POWER RELAYS (ELECTROMAGNETIC) FOR EMERGENCY LIGHTING APPLICATIONS UP TO AND INCLUDING 32 A

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  29-04-2010

    Language(s):  English

    Published date:  01-01-1981

    Publisher:  British Standards Institution

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

    Foreword
    Cooperating organizations
    Specification
    1 Scope
    2 References
    3 Standard conditions for construction
    3.1 Mechanical design
    3.2 Electrical design
    3.3 Coil circuits
    4 Marking
    5 Ordering information
    6 Routine tests
    6.1 General
    6.2 Performance characteristics
    6.3 Voltage proof
    6.4 Contact circuit resistance
    7 Type and qualification tests
    7.1 General
    7.2 Mechanical endurance
    7.3 Electrical endurance
    7.4 Insulation resistance
    7.5 Environmental tests
    7.6 Contact contamination
    Tables
    1 Maximum screw fixing torques
    2 Clearance and creepage distances
    3 Voltage proof: test voltages
    4 Dimensions of pillar terminals
    5 Dimensions of screw terminals
    6 Dimensions of stud terminals

    Abstract - (Show below) - (Hide below)

    Describes performance characteristics of relays capable of transferring an emergency lighting load to emergency supply when the normal source of supply fails, or connecting an emergency lighting load when de-energized, and disconnecting an emergency lighting load when energized. Draw attention to the need for relay to be able to make a reliable and positive transfer of emergency lighting load to emergency supply after being in the normally energized position for an extended period of time, e.g. 12 months. Describes methods of tests to confirm that these conditions have been fulfilled.

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

    Committee PEL/95
    Development Note Supersedes 76/28676 DC. (07/2005) Reviewed and confirmed by BSI, June 2007. (05/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn

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

    BS PD6686(2006) : 2006 GUIDANCE ON DIRECTIVES, REGULATIONS AND STANDARDS RELATED TO PREVENTION OF FIRE AND EXPLOSION IN THE PROCESS INDUSTRIES
    BS 5489-9(1996) : 1996 ROAD LIGHTING - CODE OF PRACTICE FOR LIGHTING FOR URBAN CENTRES AND PUBLIC AMENITY AREAS
    BS 4163(2000) : 2000 HEALTH AND SAFETY FOR DESIGN AND TECHNOLOGY IN SCHOOLS AND SIMILAR ESTABLISHMENTS - CODE OF PRACTICE
    BS 4163:2000 HEALTH AND SAFETY FOR DESIGN AND TECHNOLOGY IN SCHOOLS AND SIMILAR ESTABLISHMENTS - CODE OF PRACTICE

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

    BS 2011-2.1A(1977) : AMD 4574 BASIC ENVIRONMENTAL TESTING PROCEDURES - TESTS - TESTS A. COLD
    BS 4760(1971) : 1971 SPECIFICATION FOR NUMBERING OF WEEKS
    BS 2011-2.1B(1977) : 1977 ENVIRONMENTAL TESTING - TESTS - TEST B. DRY HEAT
    BS 4520-1(1969) : AMD 2784
    BS 3456-101(1987) : 1987 SPECIFICATION FOR SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - GENERAL REQUIREMENTS
    BS 5901(1980) : 1980 METHOD OF TEST FOR DETERMINING THE COMPARATIVE AND THE PROOF TRACKING INDICES OF SOLID INSULATING MATERIALS UNDER MOIST CONDITIONS
    BS 764(1990) : 1990 SPECIFICATION FOR AUTOMATIC CHANGE-OVER CONTACTORS FOR EMERGENCY LIGHTING SYSTEMS
    BS 2782(1970) : 1970 METHODS OF TESTING PLASTICS
    BS 2757(1986) : 1986 METHOD FOR DETERMINING THE THERMAL CLASSIFICATION OF ELECTRICAL INSULATION
    BS 2754(1976) : 1976 MEMORANDUM - CONSTRUCTION OF ELECTRICAL EQUIPMENT FOR PROTECTION AGAINST ELECTRIC SHOCK
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