IEC 62317-5:2015 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EP-cores, the essential dimensions of coil formers to be used with these cores and the locations of their terminal pins on a 2,50 mm printed wiring grid in relation to the base outlines of the cores, and the effective parameter values to be used in calculations involving them. This first edition cancels and replaces the first edition of IEC 61596 published in 1995. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 61596:
a) addition of EP5-core in Table 1,
b) addition of effective parameter and Amin values, main dimensions of coil formers, and pin locations and base outlines for EP5-core.