Normal conditions of use   Level not exceeding 1000m indoor   Highest temperature environment of the highest average temperature +30 +40 degrees centigrade   Temperature of +20 degrees, the highest average minimum temperature of -5 degrees   According to user requirements to provide special conditions for use in the operation of the transformers.   Performance standards   A, GB6450-86 dry-type electrical transformers;   B, GB/T10228-1997 dry-type electrical transformers technical data and requirements.   Performance characteristics   1, a low-voltage winding copper wire, small capacity, generally use copper cones - around system structure; Sub-winding introduction of the multi-storey structure cones to the winding-go round distribution balance leak magnetic small, high mechanical strength and resistance to short-circuit capability.   2, may be of low noise cooling devices through controlling device for the fans to start and shut down automatic control, which will enable 40% of operating capacity transformers.   3, low voltage winding through mass assemblies and the temperature sensor system, according to a set value, the closure of air-compressors or warning, the protection of transformers Tiaozha play the role.   4, transformers of the diameter 1P20 "12mm of foreign matter will not enter Zhaoke, configuration 1P23, it also can prevent and vertical perspective into the water Linru =60 meridian east. Protective covering to effectively prevent small animals from entering the body, and the short-circuit power accidents, and protect personal security.   5, SC (B) 9 empty depletion than GB/T10228-1997 Group 1   10% decline in the value of standards   Load depletion than 10% decline in the value of standards GB/T10228-1997      SC (B) 10 empty depletion than GB/T10228-1997 Group 1   20% decline in the value of standards   Load depletion than 15% decline in the value of standards GB/T10228-1997