In a 220KV S/s two 50MVA transformers Yd1 are running parallel.
The 33KV is ungrounded.
The ungrounded 33KV is connected to two Zig-Zag transformers(Zyn11)
whether two zig-zag transfor,ers can be connected to same system at a time?
The neutral CTs connected to the zig-zag transformers used to provide E/F protection for ungrounded system. But on normal condition the secondary currents of two ncts are out of phase and the currents are found to contain lotm of harmonics what is the reason for the above behaviour?
The 33KV is ungrounded.
The ungrounded 33KV is connected to two Zig-Zag transformers(Zyn11)
whether two zig-zag transfor,ers can be connected to same system at a time?
The neutral CTs connected to the zig-zag transformers used to provide E/F protection for ungrounded system. But on normal condition the secondary currents of two ncts are out of phase and the currents are found to contain lotm of harmonics what is the reason for the above behaviour?