BS 5856-1: BRITISH STANDARD 1980 IEC 632-1: 1978 Specification for Motor starters for voltages above 1 kV a.c. and 1.2 kV d.c. - Part l: Direct-on-line (full voltage) a.c. starters IEC title: High-voltage motor starters Part l: Direct-on-line (full voltage) a.c. starters UDC 621.313.13.027.557:621.316.717:621.316.5/.9 BSi NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAW BS 5856-1:1980 Cooperating organizations The Power Electrical Engineering Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical Committee Association of Short Circuit Testing Authorities* British Electrical and Allied Manufacturers Association (BEAMA) British Railways Board* British Steel Corporation Department of Energy (Electricity) Electrical Contractors' Association Electrical Contractors' Association of Scotland Electrical Research Association* Electricity Supply Industry in England and Wales* Engineering Equipment Users' Association* Institute of Purchasing and Supply Institution of Electrical Engineers Ministry of Defence National Coal Board* National Economic Development Office* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Association of Supervisory and Executive Engineers Control and Automation Manufacturers Association (BEAMA) Department of The Environment (PSA) Electrical Installation Equipment Manufacturers' Association (BEAMA) Health and Safety Executive London Transport Executive The Transmission and Distribution Association (BEAMA) This British Standard, having been prepared under the direction of the Power Electrical Engineering Standards Committee, was Copy: published under the authority of the Executive Board and comes into effect on Amendments issued since publication Licensed 29 February 1980 Amd. No. Date of issue Comments CBSI07-1999 The following BSI references relate to the work on this standard: Committee reference PEL/92 Draft for comment 76/29120 DC ISBN 0 58011142 3 BS 5856-1:1980 Contents Page Cooperating organizations Inside front cover National foreword ii 1 General 1 2 Definitions 1 3 Classification 2 4 Characteristics of starters 2 5 Nameplates 8 6 Standard conditions for operation in service 8 7 Standard conditions for construction 9 8 Tests 13 Appendix A Information to be given by the user when 21 conditions for operation in service differ from the standard 21 Appendix B Co-ordination with short-circuit protective devices Figure 1 - Test duty Nos. 1 and 2 - Preferred earth point 25 26 Figure 2 - Test duty Nos. 1 and 2 Alternative earth point Figure 3 - Test duty No. 3 - Preferred earth point 27 Figure 4 - Test duty No. 3 - Alternative earth point 28 Figure 5 - Representation by two parameters of a 29 prospective TRV of a circuit Figure 6 - Representation by four parameters of a 29 prospective TRV of a circuit Figure 7 Representation of a specified TRV by a two parameter reference line and a delay line 30 Determination of power-frequency recovery voltage 31 Figure 8- - Characteristics for determining maximum Figure 9 32 takeover current Table I - Utilization categories 6 Table II - Verification of rated making and breaking capacities (see Sub-clause 8.2.4) Conditions for making 6 and breaking corresponding to the utilization categories Table III - Verification of the number of on-load operating cycles Conditions for making and breaking corresponding to 7 the utilization categories Standard values of rated control supply voltage 7 TableIV-S Table V- Temperature-rise limits for insulated coils in air and in oil 10 Table VI - Temperature-rise limits for the various 11 materials and parts Table VII - Characteristics of the opening operation of overload relays when energized on all poles 12 Table VIIIA - Chara