Cover page; Drawing list; Schematic diagram of single line closed bus distribution; Electrical BBT riser diagram; Metal room, AVR & HT panel equipment layout; Sub-station room BBT layout (1); Sub-station distribution cabinet layout; Sub-station room BBT layout (2); Sub-station room BBT layout(3); Sub-station room BBT layout (4); Sub-station room BBT layout (5); Electrical BBT trunk line layout of basement 1 floor; Electrical BBT trunk line layout of 4th floor; Electrical BBT trunk line layout of 12th floor