22、 and to transformer oil 8 21 Loss of mass 8 23 Pin hole test . 8 30 Packaging. 8 Bibliography 9 60317-49 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES Part 49: Glass-fibre wound high temperature resin or varnish impregnated, ba...