Power distribution substation YB-12

prefabricated

Surrounding air temperature: upper limit: +40°C; lower limit: -25°C; Altitude: < 1,000m; Wind pressure: <700Pa; Humidity: daily mean <95%, monthly mean<90%; Seismic intensity: magnitude 8; The installation position should be free from severe vibration, harmful corrosive, inflammable, explosive and dangerous articles. The perpendicularity should not be larger than 3°. Functions and features Automatic control devices for ventilation, hearing and condensation prevention are mounted in the box transformer. It is featured with firmness, heat insulation, ventilation, good performance, small animal-proof, moisture proof, beautiful appearance, convenient maintenance, small land occupation, etc. Load switch and current limit fuse are supplied at the pressure side to protect the transformer. The current limit fuse could trip the three phases when one phase is fused. The load switch should be prevented from phase-deficient operation. The high pressure side might also be protected with vacuum circuit breaker. It is also supplied with complete mal-operation proof function. The bottom of the transformer might be equipped with a trolley to get in and out of the transformer gate to be convenient for repair. The wiring schemes and arrangement methods are flexible. Different structure forms and housing materials might be selected according to different using environment and conditions.