Vector group of transformer
The naming convention popularly known as Vector Group of Transformer was established by the International Electrotechnical Commission (IEC) through IEC 60076-1. This was done in order to create a notation for three-phase transformer winding configuration. Vector Group of Transformer: Common Symbol Designation Y or y – star winding D or d – delta winding N or n – neutral 0 to 12 – phase displacement in terms of clock position in multiples of 30°. According to the standard, the notation should follow HV-LV-Phase displacement sequence with the HV winding in uppercase and LV winding in lowercase. SANKALP INDUSTRIAL SERVICES www.sankalpindustries.in