Performance characteristics

Resin-insulated dry-type transformers are our company's introduction of foreign advanced technology, and independently developed SC9, SCB9 series and SC10, SCB10 series thin-insulated dry-type transformers with fillers. Because the coil is encapsulated by epoxy resin, it is flame-retardant, fire-proof and explosion-proof. Maintenance-free, pollution-free, small size, can be directly installed in the load center. At the same time, scientific and reasonable design and pouring process make the product smaller partial discharge, low noise, strong heat dissipation capacity, long-term operation under 140% rated load under forced air cooling, and equipped with intelligent temperature controller, which has faults Alarm, over-temperature alarm, over-temperature trip and black gate function, and connected with the computer through the RS485 serial interface, it can be centrally monitored and controlled. Due to the above characteristics of our dry-type transformers, they are widely used in power transmission and transformation systems, such as hotels, restaurants, airports, high-rise buildings, commercial centers, residential quarters and other important places, as well as subways, smelting power plants, ships, offshore drilling platforms and other environments Bad place.

Process characteristics

The coil is wound on a high-precision winding machine, and the low-voltage winding adopts a foil winding structure. When the transformer capacity is large, there is a ventilation duct to be vacuum-dried after the winding is completed. There are strict monitoring, and the precise manufacturing process of mouth pouring is adjusted according to the situation, so that the coil has no bubbles and holes, so that the finished transformer can achieve high-quality operation effect.

Way out

Conventional outlet, standard enclosed busbar and standard side outlet can be manufactured according to different interface forms, and special outlet methods can also be designed according to user requirements.

reliable structure

core

The iron core is made of imported high-quality cold-rolled silicon steel sheet, the iron core is made of imported high-quality cold-rolled silicon steel sheet, and the final structure is fully mitered . No-load current and iron core noise, clamps and fasteners are treated with special surface, so that the product appearance quality has been further improved.

High voltage winding

High-voltage winding The high-voltage winding is vacuum-cast with filler ring resin, which greatly reduces the amount of partial discharge and improves the electrical strength of the coil. The inner and outer walls of the winding are filled with glass fiber grid plates, which enhances the mechanical strength of the coil and improves the product's anti-slip The ability to short circuit, the coil will never crack.

low voltage winding

The low-voltage winding adopts a foil structure, which solves the problem of the axial helix angle when winding with wire, and makes the ampere-turn more balanced. At the same time, the coil adopts an axial cooling air duct, which enhances the heat dissipation capacity. The winding layers are pre- impregnated with TD cation epoxy resin Cloth, solidified and formed as a whole.

Protective housing and outgoing busbars

The protective shell provides further safety protection for the transformer. The protection grades are IPZO, IP23, etc. The shell materials are cold-rolled steel plate, stainless steel plate, etc. for users to choose standard busbar discharge lines for low-voltage outgoing lines, side outgoing lines and top outgoing lines. The user designs a special way of exiting.

Temperature control system and air cooling system

The cross-flow top-blowing cooling fan is adopted, which has the characteristics of low noise, high wind pressure and beautiful appearance, which enhances the overload capacity of the transformer. The temperature control adopts intelligent temperature controller, which improves the safety and reliability of transformer operation.

Product Standards

Executive standard

GB/T10228-2008 GB109411-2007 JB/T10088-2004 GB4208-1993

Rated high pressure

10(11,10.5,6.6,6.3,6)KV

Rated low voltage

0.4kV

link group

Dyn11 or Yyn0

High voltage tap range

±5% or ±2×2.5%

Insulation level

LI75AC35/LIOAC5

frequency

50Hz

Rated capacity (kvar)

Voltage combination and tap range (kv)

link group label

No-load loss (kW)

Load loss (kW) at different insulation system temperatures

No-load current %

Short circuit impedance (%)

Weight (kg)

Dimensions (mm) (length Lx width Bx height H)

Installation size

Dimensions with shell (length X width X height)

High voltage (kV)

High pressure tap range %

Low voltage (kV)

155°C(F) (120P)

50

35 36 37 38.5

±2.5 ± 5

0.4

Dyn11 Yyn0

0.45

1.42

2.3

6

600

1000x870x1150

550/550

1700x1400x1500

100

0.63

2.09

2

900

1080x870x1330

550/550

1800x1400x1550

160

0.79

2.81

1.5

1180

1480x870x1360

820/820

2200x1500x1600

200

±2x2.5 ±5

0.88

3.32

1.5

1360

1500x870x1400

820/820

2250x1500x1750

250

0.99

3.8

1.3

1560

1530x870x1430

820/820

2300x1500x1800

315

1.17

4.51

1.3

1750

1560x870x1520

820/820

2300x1600x1900

400

1.37

5.41

1.1

2150

1700x870x1680

820/820

2450x1600x2000

500

1.62

6.65

1.1

2450

1740x870x1860

820/820

2450x1600x2200

630

1.86

7.69

1

2840

1840x1120x1960

1070/1070

2550x1700x2300

800

2.16

9.12

1

3420

1860x1120x2150

1070/1070

2550x1700x2500

1000

2.43

10.4

0.75

4130

1900x1120x2220

1070/1070

2600x1800x2600

1250

2.83

12.7

0.75

4820

1940x1120x2260

1070/1070

2650x1800x2600

1600

3.24

15.4

0.75

5700

1960x1120x2340

1070/1070

2700x1800x2700

2000

3.82

18.2

0.75

6480

2080x1120x2450

1070/1070

2800x1900x2800

2500

4.45

21.8

0.75

7350

2160x1120x2500

1070/1070

2900x1900x2900

Note: The load loss listed in the table is the value of different insulation systems at the reference temperature in parentheses (see (specified in GB1094.11), the load loss at other insulation system temperatures not included in the table should be based on their respective reference temperatures , take the data of "155℃(F)" insulation system temperature as reference for corresponding conversion.