IEC 60254-2 pdf download.Lead-acid traction batteries
1 .1 Scope and object This part of IEC 60254 is applicable to lead-acid traction batteries used as power sources for electric propulsion. The object of the present standard is to specify – the maximum external (overall) dimensions of traction battery cells, that is, the width, the height and the length; – the form of the marking of traction battery cell polarity and dimensions of corresponding symbols; – the basic dimensions of some commonly used traction battery terminals designed to connect output cables to the battery; – the dimensions of cells commonly used in Asia and North America. 1 .2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60254. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 60254 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 6041 7-1 :1 998, Graphical symbols for use on equipment – Part 1 : Overview and application IEC 6041 7-2:1 998, Graphical symbols for use on equipment – Part 2: Symbol originals
2 Main dimensions of traction battery cells
2.1 Standard series Traction battery cells in accordance with this standard shall belong to one of the following two dimensional series determined by the width: E (narrow) L (wide) 2.2 External dimensions 2.2.1 The external (overall) dimensions of traction battery cells are represented by the following symbols: b width (dimension parallel to the surface of the plates); h height (including lid, vent plugs and terminals, but without output cable); l length (dimension perpendicular to the surface of the plates).2.2.2 The dimensions of traction battery cells in accordance with this standard shall correspond to those of table 1 . 2.3 Cell range prevalent in Asia 1 ) The dimensions of traction battery cells in this range are given in table 2. 2.4 Cell range prevalent in North America 2) The dimensions of traction battery cells in this range are given in table
3. Width and length only are specified.
3 Marking of polarity on traction battery cells and dimensions of corresponding symbols 3.1 General provisions for marking of cell polarity To comply with this standard, traction battery cells shall carry the marking of polarity, at least of the positive terminal. 3.2 Form of marking The marking shall take the form of the symbol +, indented or in relief, on the lid adjacent to the positive terminal. If the negative terminal is also marked, the marking shall take the form of the symbol –, indented or in relief, on the lid adjacent to the negative terminal. 3.3 Symbols used for marking and their dimensions Symbols used for the marking of the polarity shall be in accordance with future IEC 6041 7-1 . The marking of the positive terminal shall be in accordance with the symbol 5005-a: Plus, positive polarity. The eventual marking of the negative terminal shall be in accordance with the symbol 5006-a: Minus, negative polarity. The actual value of dimension ” a ” of these symbols shall be equal to or greater than 5 mm. NOTE A dimension ” a ” of 5 mm corresponds to a total length of each arm of the symbol equal to 6 mm.4.2 Conical traction battery terminals The traction battery terminals shall be chosen from the three types listed in figure 1 , based upon the cross-sectional area of cable used. 4.3 Bolted traction battery terminals The traction battery cable ends for bolted terminals shall be chosen from the four types listed in figure 2, based upon the cross-sectional area of cable used. NOTE For smaller size connections, reference should be made to the dimensions of terminals shown in IEC 60095-2.