M
Minetsky
I will refer a weird voltage readings on my mate's workplace.. A newly installed transformer delta-wye, 440/380V will supply a TT power system. He measured 380V per phase on the secondary and 220V L-N.. But when he measured L3 to earth he measured 0V. L1 and L2 to earth is 380V and Neutral to earth is 220V.. I said that cant be and obviously L3 was mistakenly wired as neutral and earthed and the real neutral was put to L3. But he was sure that it is 380V per phase and the korean who installed the tx dont know whats causing the phenomenon hehe.. Is there anyone who have experienced this? I never really saw the installation but its really confusing if its really true.. Thanks in advance.