IEC 61860 pdf download

IEC 61860 pdf download Dimensions of low-profile cores made of magnetic oxides
1Scope
This International Standard specifies the dimensions that are of importance for mechanicalinterchangeability of a preferred range of low-profile cores made of magnetic oxides and theeffective parameter values to be used in calculations involving these cores.
The general considerations upon which the design of this range of cores is based are given inannex A.
2Normative references
The following normative documents contain provisions which，through reference in this text,constitute provisions of this International ‘Standard. For dated references，subsequentamendments to, or revisions of,any of these publications do not apply.However, parties toagreements based on this International Standard are encouraged to investigate the possibilityof applying the most recent editions of the normative documents indicated below.For undatedreferences, the latest edition of the normative document referred to applies. Members of ISoand lEC maintain registers of currently valid lnternational Standards.
IEC 60205:1966,Calculation of the effective parameters of magnetic piece partsAmendment 1 (1976)
Amendment 2 (1981)
IEC 60431:1983，Dimensions of square cores (RM-cores) made of magnetic oxides andassociated parts
Amendment 1 (1995)
IEC 61185:1992，Magnetic oxide cores (ETD-Cores) intended for use in power supplyapplications – Dimensions
IEC 61246:1994，Magnetic oxides cores(E-cores) of rectangular cross-section and associatedparts – Dimensions
ISo 370:1975，Toleranced dimensions – Conversion from inches into millimeters and viceversa
3Primary standard
The main dimensions shall be as given in table 1 and figure 1. A uniform dimensionnomenclature has been chosen in order to facilitate a comparison of major physical attributesamong different core shapes. The existing nomenclature in related standards has been alsogiven.The effective parameters and Amin values of a pair of cores shall be as given in table 2(see lEC 60205 for definitions).