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what is the difference between the connection code CC=2 and CC=17 for a three winding transformer?

Hello! I'm using PSS/E 33.3 and i want to modelise a three winding transformer (auto-transformateur) with a vector group (Yna0d5). I thought that the connection code equivalent in a short circuit is 17(1-1-3) but when i enter the code CC=17 the PSS/E crash so i need your help to know what the difference between connection code "CC= 2) and "CC=17" for a three winding transformer (autotransformer).

what is the difference between the connection code CC=2 and CC=17 for a three winding transformer?

Hello! I'm using PSS/E 33.3 and i want to modelise a three winding transformer (auto-transformateur) with a vector group (Yna0d5). I thought that the connection code equivalent in a short circuit is 17(1-1-3) but when i enter the code CC=17 the PSS/E crash so i need your help to know what the difference between connection code "CC= 2) and "CC=17" for a three winding transformer (autotransformer).