This series of transformer silicon steel core which is composed of crystal particles of low loss of outstanding. They have the advantages of small low no-load loss, no-load current and low noise.
The box structure is strong, can withstand a normal pressure.
KS9 series transformer is suitable for coal mine underground substation, bottom, the total inlet duct and the main air duct, although there is no gas but dangerous places. Also applies to tunnel more humid environment.
a. The height of sea level is less than 1000m.
b. Highest temperature 40ºC
c. Lowest temperature: -20ºC
d. Maximum daily average temperature: 25ºC
e. Maximum annual mean temperature: 20ºC
f. The relative humidity is less than 95%(when the sir temperature is 25ºC)
g. Install at the site with dust methane, but no explosion water
h. Power supply voltage profile approximate to sine wave