Product Description:This series transformer adopt silicon steel sheet iron core which is made of excellent low loss crystal granule. They have the merit of low no-load loss, small no-load current and low noise. Functional characteristics 1. Adopt silicon steel sheet iron core which is made of excellent low loss crystal granule. 2. Low no-load loss, small no-load current and low noise. Service conditions 1. The height of sea level is less than 1000m. 2. Highest temperature 40ºC 3. Lowest temperature: -20ºC 4. Maximum daily average temperature: 25ºC 5. Maximum annual mean temperature: 20ºC6. The relative humidity is less than 95%(when the sir temperature is 25ºC) 7. Install at the site with dust methane, but no explosion water 8. Power supply voltage profile approximate to sine wave Scope of application It suit for cetre substation, mine stop, general wind dypass and main wind dypass which has gas but no explosion danger, and the moisture enviroment.