DGG dry-type transformer coil products are arranged inside the
axial airway to improve heat dissipation, casting process of
science can ensure that the resin fully penetrate into the inter
turn and inter layer, between segments to ensure product electrical
insulation strength and less partial placed (less than 5pc).
The characteristics of DGG series resin casting thin insulation dry
change products made by our company:
1、DGG series dry-type transformer reduces the thickness of the
package sealing resin, and enhances the heat dissipation ability of
2、The coil is strengthened with glass fiber felt, which enhances
the mechanical strength of the coil and improves the burst
resistance of the product.
3、The coil adopts special technology, greatly reduces the local
discharge of coil, improves the coil electrical strength.
4、The low voltage coil adopts foil structure, which reduces the
magnetic flux leakage at the end, and improves the ability of
products to withstand short circuit burst.
1、Using F insulated copper wire winding glass fiber and epoxy resin
composite material as insulation, vacuum pouring
2、The expansion coefficient of glass fiber and epoxy resin
composite is similar to that of copper conductor, and it has better
impact resistance and crack resistance
3、The pouring resin mixed material can be completely soaked into
the coil gap, so that the coil is no bubble, and the coil is placed
1、The foil conductor in automatic foil winding, internal welding on
the winding machine, argon shielded welding, no external welding
2、F insulation is used between winding layers, and the back end is
cured by resin sealing
2. Connection group:Iio
4.Temperature rise limit:The core is no more than 60K.The core is
no more than 60K.
5.Withstand voltage:AC high voltage 6000V 3.5kV / high voltage
10000v 4.2kv/50HZ/5mA/60s without arcing breakdown
6.Operational environment:-10~45℃Relative humidity:Long term work