The voltage levels in China are basically 220V, 380V, 10kV, 24kV, 35kV, 110kV, 220kV, 500kV, 800kV, and 1000kV.
Voltage levels are generally divided: 1: safe voltage (usually below 36V); 2: low voltage (also divided into 220V and 380V); 3: high voltage (10KV-220KV); 4: ultra-high voltage 330KV-750KV; 5: ultra-high voltage 1000KV AC, Above ±800KV DC.
It is usually divided like this in foreign countries:
low voltage: less than 400V
Medium voltage: 10-35kV
High voltage: above 110kV and below 500kV
Ultra-high voltage above 500kV