Product profile1.The iron core adopts cold-roll orientation silicon steel sheet with thickness being 0.30 mm or 0.27This series of transformer has low no-load loss. S20-S22 is a better distribution transformer withlower loss.2.The transformer’s coiling requires special winding machine and synchronous coiling of both highand low-pressure coil.3.All oil cabinets of the distribution transformer adopt corrugation seal style. Usage environment 1.Lower than 1,000 meters in elevation.2.Environmental temperature: +40°C as maximum, maximum daily average temperature is +30°C.3.Maximum annual average temperature +20 °C, minimum annual average temperature is -25°C .4.Relative humidity: daily average value no higher than 95%, monthly average value no higher than90%.5.Magnitude of earthquake: no higher than 8 degrees.