The Institute for Standardization of Bosnia and Herzegovina, through its Technical Committee BAS/TC 8, Insulation coordination, high-voltage tests and instrument transformers, has adopted, through the translation method, the second edition of BAS EN IEC 60471:2023, Clevis and tongue couplings of string insulators units - Dimensions, which is a translation of the English version of the European standard EN IEC 60471:2020.

BAS EN IEC 60471:2023 applies to string insulator units of the cap and pin type and also of the long rod type, as well as the fittings used with such insulators.

The object of this document is to define the dimensions of a series of clevis and tongue couplings to permit the assembly of insulators or fittings supplied by different manufacturers.

NOTE 1 IEC 60305 gives the coordination between the standardized dimensions of Table 1 and the strength classes of cap and pin insulator. IEC 60433 gives the coordination between the standardized dimensions of table 2 and the strength classes of long rod insulators.

NOTE 2 If the dimensions given in Table 1 are not sufficient, higher strength classes are given in IEC 60305.

The original texts of the standards were prepared by the IEC/TC 36, Insulators.