BS EN IEC 60317-27-2 specifies the requirements of paper tape covered round aluminium winding wires. This covering consists of two or more layers of paper tape and is primarily intended for winding coils for oil-immersed transformers.
This part of IEC 60317 forms an element of a series of standard which deals with insulating wires used for winding in electrical equipment.
The range of nominal conductor diameters covered by BS EN IEC 60317-27-2 are:
BS EN IEC 60317-27-2on particular types of winding wires applied for the following:
Aluminium provides a better conductivity to weight ratio than copper and therefore is also used for wiring power grids, including overhead power transmission lines and local power distribution lines, as well as for power wiring of some aeroplanes.
BS EN IEC 60317-27-2 is useful as it provides specifications and requirements to use aluminium wire for paper insulation as aluminium wire expands more than copper when it heats up.
Compliance of requirements and processes with BS EN IEC 60317-27-2 is beneficial as it defines methods for improving the efficiency of applications by using wire with paper insulation that has good insulation properties thereby preventing electrical short-circuits. Making the right choice based on the purity, grade and thickness of the insulation paper is essential to achieve the necessary electrical strength.
EN 60317-27-2 Ed.1.0
IEC 60317-27-2 Ed.1.0