Power Transformer Phase Arrangement
Power Transformer Phase Arrangement
(OP)
ABB Switchgear Manual Fig.12-3 states the terminals of a transformer (1U,1V,1W for the primary side and 2U, 2V, 2W for the secondary side) are arranged from right to left as viewed from the low-voltage side, with their inscriptions visible from the low-voltage side. this is referred to DIN 42402, is there any equivalent in IEC or IEEE?






RE: Power Transformer Phase Arrangement
As per IEEE C57.12.70-2000, as viewed from LV, it shall be X0 , X1, X2, X3 (LV) H0 ,H1 ,H2,H3 (HV) .For Single phase units it shall be X2, X1 (LV) and H1 ,H2 (HV)
Also see section 17.4 of ABB Transformer Handbook ed3.0-2007
RE: Power Transformer Phase Arrangement
I understand that the IEEE arrangement matches that for IEC but is opposite to DIN 42402 (quoted by ABB Manual),any reason why?
RE: Power Transformer Phase Arrangement
RE: Power Transformer Phase Arrangement
The IEEE C57.12.70-2000 Fig.20 shows all the connections matching the IEC 60616-1978.
attached.
RE: Power Transformer Phase Arrangement
Hence my statement that IEC arrangement is exactly opposite to ANSI/IEEE arrangement.Reason for it? There is nil, may be America always wants to be different.In Transformer engineering there are several similar issues where ANSI world follows exactly opposite conventions to that of IEC . Eg. In IEC, rating is the input MVA, IEEE it is the output rating, In IEC, distribution trfs have negative polarity, but in US it is positive polarity. GSUs are connected Yd 11 in Europe, US goes for Yd1.In US transformer rating is ONAN rating, rest of the world maximum ONAF rating etc, etc.
RE: Power Transformer Phase Arrangement
RE: Power Transformer Phase Arrangement
RE: Power Transformer Phase Arrangement