Product description

The main characteristics of the dry-type transformer The gas in the
sealed dry-type transformer is not connected to the outside atmosphere, and can be used in a more harsh environment. However,
due to the sealing, the heat dissipation conditions are poor, and it is mainly used for mine flameproof transformers. It can also be charged with SF at 2~3
atmospheres of pressure, and strengthen the forced circulation, so the insulation and heat dissipation capacity of the transformeran be suitable for high-voltage transformers with oil-submerged type.

Note: Immersion type and enclosed type are both air-cooled dry-type transformers

The thick insulating casting transformer with packing is the encapsulated winding transformer cast with resin and packing

The characteristics of the thick and absolute group with packing are that the encapsulation layer is anti-lake, positive ignition, good self-nature, high mechanical strength, and due to the good image performance,

Like the injection dry type pressure change, there is no burning hazard and can penetrate deep into the center of the negative bag, but the problem of preventing the cracking of the encapsulation layer is more prominent because of the heat of the copper

The coefficient of expansion of the vessel is quite different from the coefficient of thermal expansion of quartz powder filler, and this structure brings a greater difference to the development of copper winding

The thin insulated cast transformer without packing is a thin layer resin cast winding transformer, also known as glass fiber

Thinly reinforced, thin-insulated cast transformer without packing. Its low-voltage winding is also made of copper foil or aluminum foil or wound with flat wire, high

It is like pouring dry type variable “press winding box belt on the epoxy glass fiber barrel winding into a segment type, or with a flat wire or round wire winding into a segment layer type,

Press, then load the pouring die to pour. The thickness of the resin encapsulation layer is only 1~3m

Note: Thick insulation pouring with packing and insulation pouring without packing are epoxy casting dry-type transformers

Resin wrapped dry-type transformer is also known as winding resin encapsulated winding dry-type transformer. The transformer is absolute

The edge heat resistance level isClass F, the encapsulation layer of the winding also has good lake resistance, crack resistance and flame retardant self-extinguishing properties

Resin wrapping dry-type transformer refers to the high and low voltage windings that form a strong whole like a “resin block”.

There is no suit clearance between them, and axial airways for heat dissipation are provided in the windings. 1000V and below low voltage using foil

For lines above 1000, the coil is wound with enameled round copper wire or flat copper wire. In addition to foil coils,

Resin wrapping dry type

All windings are encapsulated with resin reinforced with fiberglass filaments. This transformer winding has the following characteristics

Characteristics of transformers:

(1) High mechanical strength. Fiberglass filaments impregnated with resin are wound straight and diagonally (cross-wound) by means of straight winding

The windings are encapsulated and, therefore, have high mechanical strength.

(2) Good flame retardant performance. The windings of dry-type transformers have the performance of flame retardant, but the resin winding type is dry

The flame retardant performance of the transformer winding is better.

(3) The production cycle of non-mold molding is short and the manufacturing cost is low

(4) While impregnating epoxy resin, a glass ribbon is used to wrap around the surface of the winding, and then heated to cure the shape

into a glass fiber reinforced plastic layer, without vacuum treatment, high and low voltage windings are wound at one time, without suit clearance

SF gas is colorless, non-toxic, and odorless, and is a stable quiet gas at a temperature below 600°C

At the same time,SF gas does not burn, does not explode, has good insulation performance, and the heat capacity is slightly worse than that of transformer oil

SF。 Gas Insulated/SF Gas Insulated Dry-Type Transformer Compared to other dry-type transformers, SF. Gas-insulated transformers are the most prominent

transformer

The advantage is that it has a wide range of applications, and its structural design and manufacturing process are similar to those of traditional oil-immersed transformers

Many similarities, the disadvantage that a manufacturing plant can develop and produce without investing a lot of equipment is SF

The gas breaks down when the metal is overheatedSF。 The extremely toxic substance, if the manufacturing process is not good, transformers

Leaks in the shell can have unimaginable consequences for the atmosphere and ecology.