Performance characteristics

SG(B)13 type H-class insulated dry-type power transformer has strong thermal shock resistance, large overload capacity, flame retardant, high fire performance, low loss, small partial discharge, low noise, no harmful gas, and no environmental pollution , Insensitive to humidity and dust, small size, no cracking and easy maintenance. Therefore, it is suitable for use in harsh environments with high fire protection requirements, large load fluctuations and dirty and humid environments such as: airports, power plants, metallurgical operations, hospitals, high-rise buildings, Shopping centers, densely populated areas, and special environments such as petrochemicals, nuclear power plants, and nuclear submarines.

Structural features

The SG(B)13 new product adopts DuPont Nomex paper as the main insulating material, and uses it as a hybrid insulation system at the hot spot of the transformer, which makes the product smaller than the epoxy resin cast transformer product of the same capacity. size and weight.

Environmentally friendly materials

The SG(B)13 new product can be decomposed and recycled after the service life, which overcomes the defect that the epoxy resin cast thousand-type transformer is cured and fused into a whole by dry resin and glass fiber, which leads to the defect that it cannot be decomposed after the service life and pollutes the environment.

reliable structure

core

The iron core is made of imported grain-oriented high-quality and high-permeability silicon steel sheets stacked to form a 45° full oblique joint structure, and elastic fixing devices are used between the winding and the iron core, so that the compressor has low no-load loss and noise. The surface of the iron core is specially treated The process treatment of the transformer not only reduces the noise of the transformer, but also prevents the iron core from rusting during the operation of the transformer. The iron core is moderately clamped by the pull screw, the upper and lower clamps are connected by the pull plate and fixed with the base as a whole, the winding is fixed by the elastic pad, and the buffer structure can reduce the vibration degree of the winding and reduce the noise.

High and low voltage coils

The high and low voltage coils are made of Nomex insulating material, and have been sprayed with solvent-free paint by VPI vacuum pressure equipment for many times, and cured at high temperature for many times. The high-voltage coil adopts a continuous structure with high mechanical strength and good heat dissipation conditions, which avoids the shortcomings of high interlayer voltage, poor heat dissipation capacity, easy thermal breakdown and low mechanical strength of the multi-layer cylindrical coil, thereby improving the operation of the product. Reliability; The low-voltage coil adopts a foil type into a longitudinal airway high-current spiral structure. The soaked coil has excellent moisture-proof performance, can withstand impact, never cracks, no partial discharge, easy to dry decomposition and recycling after the service life, and protect the environment.

shell

If the user needs, our company can provide IP20 and IP23 enclosures. The meaning of the enclosure protection grade IP20 is: solid foreign objects with a diameter of 12mm are not allowed to enter. In order to ensure the circulation of cooling air, the bottom plate and top of the casing are made of mesh plates. In addition to the meaning of IP23 protection class, it can also prevent the water from the entrance within a 60' angle from the vertical line.

pinout

The high-voltage outlet terminal is fixed on the upper part of the winding, and the tap is in the middle of the winding. In the case of power failure, the tap is changed through the connecting piece to adjust the output voltage. The low-voltage outgoing terminal is a plate-type conductive bar, which is reliably connected to the outgoing bar through bolts

Protective function

Overheating protection

In order to take protective measures against overheating of the coil, SG(B)13 dry-type transformers of 315KVA and above are equipped with a temperature display protection device. The device uses the temperature sensing element embedded in the low-voltage winding as the signal source of the digital display instrument. When the temperature in the low-voltage winding changes, the temperature-sensing digital display device displays a new temperature value, and executes control and alarm according to this temperature value. function to protect the transformer.

overload capacity

SG(B)13 type dry-type power transformer adopts new structure, new material and new process, which has good heat dissipation conditions, long thermal life and strong overload capacity. It can work safely and reliably for a long time under 20% overload. No fan cooling is required in the old 23 environment, and it can still run at full capacity for a long time.

Material Safety

The new SG(B)13 product is a dry-type transformer with good safety performance today. All insulating materials are non-combustion-supporting, self-extinguishing and non-toxic, and the combustible substances are less than 10% of epoxy castable products. No toxic fumes are generated when burned for a long time at a high temperature of 800 °C, thus overcoming the production of epoxy castable transformers when burning. Defects of toxic gas The SG(B)13 new product is more advantageous in the occasions with high safety requirements, damp heat and poor ventilation, such as electric power, subway, shipbuilding, chemical industry, metallurgy, etc.

High reliability

The special coil design, process and materials of the SG(B)13 new product make the product three-proof (moisture proof, mildew proof, salt spray proof), better able to withstand thermal shock, never crack, and no partial discharge. . Insulation systems based on Nomex ⑧, maintain excellent electrical and mechanical properties throughout the life of the transformer Nomex. The material is not easy to age, resistant to shrinkage and compression, and has strong elasticity, so it can ensure that the coil of the transformer remains tightly structured and can withstand the pressure of short circuits even after several years of use.

Excellent moisture resistance

Nomex Insulation System dry-type transformers are strong enough to withstand the ingress of moisture. Adopt advanced VPI equipment and vacuum impregnation technology. UI-approved high-quality impregnating paint for long-term continuous operation at temperatures of 180°C and above. Nomex paper is completely impregnated with impregnating varnish

Conditions of Use

The conditions of use are in accordance with Article 1.2 of GB6450-1986 "Dry-type Transformers". When the highest ambient temperature is greater than 40 ℃ and the altitude is 1000m, it shall be corrected in accordance with the relevant provisions of the national standard. Ask the user to put forward when ordering.

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) (LxWxH)

Installation size

Dimensions with case (L×W×H)

High Voltage ( kV)

High voltage tap range

Low voltage (kV)

130℃
(B)
(100℃)

155℃
(F)
(120℃)

180℃
(H)
(145℃)

100

6 6.3 6.6 10 10.5 11

±2.5 ±5

0.4

Man11 Yes0

0.29

1.69

1.5

4

590

850x600x830

400/450

1250x1000x1150

125

0.34

1.98

1.3

650

870x650x890

550/550

1300x1000x1300

160

±2x2.5 ±5

0.38

2.28

1.3

800

900x710x930

550/550

1300x1100x1350

200

0.45

2.71

1.1

880

940x750x980

550/660

1350x1100x1500

250

0.52

2.96

1.1

1050

990x770x1030

660/660

1400x1150x1550

315

0.64

3.73

1

1260

1020x790x1080

660/660

1450x1150x1550

400

0.7

4.28

1

1570

1060x880x1180

660/820

1450x1200x1600

500

0.83

5.23

1

1780

1090x900x1220

660/820

1500x1200x1700

630

0.94

6.4

0.85

6

1860

1200x920x1150

820/B20

1600x1200x1700

800

1.1

7.46

0.85

2180

1260x920x1200

820/820

1650x1200x1800

1000

1.27

8.76

0.85

2590

1320x950x1250

820/820

1750x1300x1800

1250

1.5

10.3

0.85

2980

1350x980x1320

820/820

1750x1350x1900

1600

1.76

12.5

0.85

3580

1400x1120x1400

1070/1070

1800x1400x2000

2000

2.2

15.5

0.7

4070

1440x1120x1520

1070/1070

1850x1450x2200

2500

2.6

18.4

0.7

4820

1500x1120x1640

1070/1070

1900x1500x2200