IEC 60254.2 pdf download Lead-acid traction batteries – Part 2: Dimensions of cells and terminals and marking of polarity on cells
1.1Scope and object
This part of lEC 60254 is applicable to lead-acid traction batteries used as power sources forelectric 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 correspondingsymbols;
the basic dimensions of some commonly used traction battery terminals designed toconnect 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 lEC 60254. For dated references,subsequent amendmentsto，or revisions of，any of these publications do not apply. However，parties to agreementsbased on this part of iEc 60254 are encouraged to investigate the possibility of applying themost recent editions of the normative documents indicated below. For undated references, thelatest edition of the normative document referred to applies. Members of lEC and lS0 maintainregisters of currently valid lnternational Standards.
IEC 60417-1:1998,Graphical symbols for use on equipment – Part 1 : Overview and applicationIEC 60417-2:1998,Graphical symbols for use on equipment – Part 2: Symbol originals
2Main dimensions of traction battery cells
2.1 Standard series
Traction battery cells in accordance with this standard shall belong to one of the following twodimensional series determined by the width:
2.2.1 The external (overall) dimensions of traction battery cells are represented by thefollowing symbols:
bwidth (dimension parallel to the surface of the plates);
h height (including lid, vent plugs and terminals, but without output cable);llength (dimension perpendicular to the surface of the plates).
2.2.2 The dimensions of traction battery cells in accordance with this standard shallcorrespond to those of table 1.
2.3Cell range prevalent in Asia 1)
The dimensions of traction battery cells in this range are given in table 2.
2.4Cell range prevalent in North America 2)
The dimensions of traction battery cells in this range are given in table 3. Width and length onlyare specified.
3 Marking of polarity on traction battery cells and dimensions of
3.1General provisions for marking of cell polarity
To comply with this standard, traction battery cells shall carry the marking of polarity, at least ofthe 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 thepositive terminal.
lf 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.
3.3symbols used for marking and their dimensions
Symbols used for the marking of the polarity shall be in accordance with future lEC 60417-1.
The marking of the positive terminal shall be in accordance with the symbol 5005-a: Plus,positive polarity.