·Structural features
1. Low partial discharge:
Adoption of leading mixing method and the membrane-type vacuum deaerator makes the mixture material evenly and eliminates the bubbles at the bottom of the mixture. The product demonstrates low partial discharge and can be controlled at 5pc. Both high voltage coil and the low voltage coil can be casted under vacuum pressure, which generates encapsulation of resin insulation with characteristics of flame retardant, explosion-proof and environment protection.
 
2. Raw materials of winding coil such as glass fiber have self-extinguishing property, which will not produce arc when short circuit. The resin will not produce harmful gases at high temperature.
 
3. High mechanical strength: the resin with filler produces small difference of expansion coefficient in the casting body, small curing shrinkage rate, small internal stress, and high hardness of the solidified object. In the epoxy resin coating on the inner and outer surfaces of the high and low pressure coils, there are preformed reinforced materials, which have similar dense structure as the reinforced concrete, so mechanical strength of the casting body of this technique is greater than pure epoxy resin, and can withstand electrodynamic action under sudden short-circuit meanwhile without damage .
 
4. Low loss and energy-saving: The adoption of isotropic soft magnetic material generates low magnetization power, high electrical resistivity and low eddy current consumption.
 

1.working condition
* Device types: indoor type
* Normal environment conditions of use: the elevation not more than 1000 m
* Environmental highest temperature + 40℃, minimum-25 ℃
* The special environment conditions of use: elevation of more than 1000 m
* Environmental highest temperature + 40 ℃, minimum-45 ℃. (when you order details)
* Mounting ambicnt: no corrosive gas, no obvious dirt environment
 
2.applicable  standard
* IEC60076 power transformer
* IEC723 dry power transformer
* GB6450-1986 dry power transformer
* GB/R1094-1996 power transformer
* GB4208-1993 outer shell protect grade(IP code)
 

All products of the company have passed the national type test like CCC, CQC , CTQC and other

national mandatory product certification, and has a perfect quality, occupational health and

environmental management system certification system. Our products have passed ISO9001, 2000

and other international quality system certification.