110kV grade dry-type electrical transformer

Product structure and technology characteristics

With the rapid growth of the national economy and the continuous expansion of the city scales,110KV terminal  substation will become the focus of urban power.

Acording  to  different  insulating  media,110kV  transformers  can  be  divided  into  composite  oil-insulated,  oil-immersed and SF6 gas-insulated types.In  China,110kV transformers  have  been  mainly oil-immersed.The  insulating medium of the transformer is a flammable and explosive product.In case of a short-circuit accident,it may  cause the burn and explosion of the transformer oil,That's why the transformer is unable to be used in densely  populatedcities and public places with high explosion-proof requirements.

Resin-cast insulating transformers is characterized by reliable operation,safety,flame-retardant,fireproof and  non-polluting performance,easy installation,maintenance-free,small size,superior environmental performance,and  mature technology.At present,resin-insulated dry-type transformers of 35KV and below have been widely used in  urban power systems.

Developing a 110kV resin-cast insulation transformer and promoting the operation safety of the 110kV terminal substation inthe urban power system is a subject confronted by most transformer manufacturers.

The main structural features of110KV three-phase epoxy cast-resin insulated dry-type power transformer are as follows:

1.An umbrella-skirt structure is added to the incoming/outcoming terminals;

2.Turns are arranged with segmented cylindrical and hierarchical structures;

3.The tapping area is subdivided into several zones to lower the number of lead wires in the tapping area;             4.The transformer is cast with resin;

5.The transformer adopts a three-phase design;

From the perspective of the expandingmarket demand,it can be seen that the resin-cast insulation transformer  has a strong vitality,110kV resin cast insulating transformer not only has excellent fire and disaster prevention performance,but  also  has  the  advantages  of  strong   short-circuit  resistance,high  reliability,small  size,and  maintenance-free performance.Therefore,it willalso be accepted by the majority of users.It wil surely become the  leading product of electricity in our cities,and it willalso make greater contributions to the electric power industry of  China.

Performance parameters of the product