Z -- Combination "Group"
G ---Box "Total"
Full name: Combined common box transformer
Transformer model :SB9 Among them, S is the three-phase, B is the foil winding, 9 is the design sequence (this sequence consumes more power, and 11 is commonly used now)
1600 is the capacity of 1600kVA p>
37.5 is the voltage level of 37.5kV< /p>