We have emergency 440 V DG set for black start of 11 kV GTG. The DG set neutral is floating (unearthed). We have to sychronise this DG set momentarily with the 11/.44 kV Dyn11 (with solid grounded neutral) transfomer during the black start.
Is it acceptable to synchronise the DG set (with floating neutral) with GTG through Dyn11 (solid grounding) transformer? Will there be any problem? Any idea?
