I don't have information on the Generator but I assume that it is PMG.
I have been told that the generator neutral was earthed and connected to the LV Switchgear earth bar. But I doubt it though so I ask them to confirm again. If the neutral of the generator is not earthed then I think it...
Thank you for your reply.
I will be going site to speak with the engineers to see where they measured this kW at.
The Generator wasn't loaded. So I expect that only the copper resistance and the capacitance to earth need to be considered. Could the capacitance of the earth wiring be...
1000kW, 400V standby generator was connected wrongly when first switched on. Red phase was connected to the LV Switchboard Neutral which is earthed and the neutral was connected to the Red phase bar. The load was not connected.
It appears the generator initially took a load of around 1mW, this...
Thank you all for your suggestion. If I have been given two fault levels - there phase fault MVA and earth phase fault MVA which one I could use in my calculation since the only fault possible on the secondary side is single phase to earth fault. Based on your information, the zero sequence...
Thank you all for you replies.
In addition, the transformer primary winding is single phase and is connected between two phases (rated voltage 400kV not 400kV/1.73)I have got the impedance of the transformer measured at each of the secondary winding when the primary one is short circuited. I...
I need to set an overall differential protection for track transformer which is fed from three phase system with rated voltage of 400kV. There is two secondary winding with rated voltage 25kV. For a single-phase transformer in isolation, there is no zero sequence impedance, as the zero phase...
I have been asked to employ a fuse for protection of 11kV overhead line, a ground mounted 11/0.433kV distribution transformer and a low voltage cable. As I know expulsion fuses are commonly in used for overhead line protection. A H.R.C fuse or current limiting fuse is both employed for...
