Overview
SG (B) 10 H-class insulated dry-type power transformer has strong thermal shock resistance, high overload capacity,flame retardancy,high fire resistance, low loss, small partial discharge, low noise, no harmful gas production, no environmental pollution, insensitivity to humidity and dust, small size, no cracking, and easy maintenance. Therefore, it is most suitable for use in harsh environments with high fire prevention requirements, large load fluctuations, and dirty and humid conditions. Such as airports, power plants,metallurgical operations, hospitals, high-rise buildings, shopping centers, densely populated residential areas, as well as special environments such as petrochemicals, nuclear power plants, and nuclear submarines.
Iron core
The iron core is made of imported grain oriented high-quality high magnetic conductivity silicon steel sheets stacked together, The 45° fully inclined joint structure adopts an elastic fixing device between the winding and the iron core, which enables the transformer to have low no-load loss and noise.
The surface of the iron core is treated with special technology. which not only reduces the noise of the transformer but also prevents the iron core from rusting during operation.
The iron core is moderately camped by a pull screw, and the upper and lower clamping parts are connected by a pull plate and fixed to the base as a whole. The winding is fixed by elastic pads, and the buffering structure can reduce the vibration level and noise of the winding.
High and low voltage coils
The high and low voltage coils are made of Nomex insulation material and are repeatedly impregnated with solvent-free impregnating paint using VPI vacuum pressurization equipment, and then baked and cured at high temperatures multiple times. The high-voltage coil adopts a continuous structure with high mechanical strength and good heart dissipation conditions,avoiding the disadvantages of high interlayer voltage,poor heat dissipation ability,easy thermal breakdown,and low mechanical strength of multi-layer cylindrical coils, thereby improving the reliability of product operation; The low-voltage coil adopts a foil or longitudinal airway high current spiral structure. The impregnated coil has excellent moisture resistance and can withstand impacts more effectively. It has no cracks or partial discharge, and is easy to dry, decompose, and recycle after its service life, protecting the environment.
Casing
If required by the user, our company can provide enclosures with protection levels of IP20 and IP23.
The meaning of the enclosure protection level IP20 is that solid foreign objects with a diameter of 12mm are not allowed to enter.
To ensure the circulation of cooling air, the bottom and top of the shell are made of mesh plates.
The meaning of the enclosure protection level IP23 is not only the same as IP20, but also to prevent water from entering within 60 degrees of the vertical line.
Overheat protection
To take protective measures against coil overheating. SG (B) 10 dry-type transformers of 315kVA and above are equipped with a temperature display protection device. This device uses temperature sensing elements embedded in the low-voltage winding as the signal source for the digital display instrument When the temperature inside the low-voltage winding changes, the temperature sensing digital display instrument displays a new temperature value and performs control and alarm functions based on this temperature value to protect the transformer.
Overload capacity
The SG (B) 10 dry-type power transformer adopts a new structure, new materials, and new processes, with good heat dissipation conditions, long thermal life, and extremely strong overload capacity. It can work safely and reliably for a long time under 120%overload. In the old 23 environment, there is no need for fan cooling and it can still operate at full load for a long time.
Secure
The SG (B) 10 new product s the highest safety performance dry-tpe transformer available today .All insulation materials are non combustible, self extinguishing. non-toxic, and contain less than 10% of flammable substances compared to epoxy cast products. They burn for a long time at a high temperature of 800℃ without producing toxic smoke,thus overcoming the defect of toxic gases produced during the combustion of epoxy cast transformers. The SG (B) 10 new product demonstrates superior performance in applications with high safety requirements, humid and hot conditions, and poor ventilation, such as power, subway, ship, chemical,and metallurgical industries.
Reliable
The special coil design, process, and materials of the SG (B) 10 new product provide excellent three proof performance (moisture-proof,mold proof, salt spray proof), better resistance to thermal shock, no cracking, and no partial discharge. The insulation system based on Nomex maintains excellent electrical and mechanical performance throughout the entire service life of the transformer, Nomex material is not prone to aging. resistant to shrinkage and compression, and has strong elasticity, which ensures that the coil of the transformer remains tightly structured even after years of use and can withstand the pressure of short circuits.
Protect the casing and output busbar
The Nomex insulation system dry-type transformer is capable of withstanding the invasion of moisture.
Adopting advanced VPI equipment and vacuum impregnation technology.
The high-quality impregnating paint recognized by U can operate continuously for a long time at temperatures of 180 ℃ and above.
Nomex paper is completely impregnated with impregnating varnish.
Smaller volume and lighter weight
The SG (B) 10 new product uses DuPont Nomex paper as the main insulation material and uses it as a hybrid insulation system at the hottest point of the transformer, reducing its size and weight compared to epoxy resin cast in transformers of the same capacity.
Environmental Protection
The SG (B) 10 new product can be decomposed and recycled after its service life, overcoming the defect of epoxy resin cast dry-type transformers that cannot be decomposed and pollute the environment due to the solidification and fusion of resin and glass fiber into a whole after its service life.
Model Meaning
Lead wire
The high-voltage output terminal is fixed on the upper part of the winding, and the tap is located in the middle of the winding. In the event of a power outage, the tap is changed through a connecting piece to adjust the output voltage.
The low-voltage outgoing terminal is a plate type conductive strip, which is reliably connected to the outgoing strip through bolts.
Normal condition
According to Article 1.2 of GB6450-1986 “Dry type Transformers”. When the maximum temperature of the environment is greater than 40 ℃ and the altitude is 1000m, it shall be corrected according to the relevant provisions of the national standard. Request the user to specify when placing an order.
Related standards¶meters
- GB1094.11-2007 “Dry type Transformers”
- GB/T10228-1997″Technical Parameters andRequirements for Dry type Power Transformers”
- GB/T17211-1998 “Load Guide for Dry type Power Transformers”
- JB/T10088-2004 “Sound Level of 6-220kV Power Transformers”
- GB4208-1993 “Degrees of Protection Provided by Enclosures (IP Code)”
Appearance and installation dimensions
Technical parameters
10KV SG (B) 11H environmentally friendly dry-type transformer
| Rated capacity (KVA) |
Voltage combination and tap range (kV) |
connection symbol |
No load loss (kW) |
Load loss at different insulation system temperatures (Kw) |
No load current (%) |
Short circuit impedance (%) |
Weight (kg) |
Dimensions(mm) (L in length,B in width,and H in height) |
Installation size |
With shell size (L×W×H) |
||||
| High Pressure (kV) |
High voltage division Range of acceptance (%) |
Low Pressure (kV) |
130℃(B) (100℃) |
155℃(B) (120℃) |
80℃(B) (145℃) |
|||||||||
| 100 | 6 6.3 6.6 10 10.5 11 |
±2.5 ±5 |
0.4 | Dyn11 Yyn0 |
0.36 | 1.69 | 4 | 590 | 850×600×830 | 400/450 | 1250×1000×2200 | |||
| 125 | 0.42 | 1.98 | 650 | 870×650×890 | 550/550 | 1300×1000×2200 | ||||||||
| 160 | ±2×2.5 ±5 |
0.48 | 2.28 | 800 | 900×710×930 | 550/550 | 1300×1100×2200 | |||||||
| 200 | 0.56 | 2.71 | 880 | 940×750×980 | 550/660 | 1350×1100×2200 | ||||||||
| 250 | 0.65 | 2.96 | 1050 | 990×770×1030 | 660/660 | 1400×1150×2200 | ||||||||
| 315 | 0.79 | 3.73 | 1260 | 1020×790×1080 | 660/660 | 1450×1150×2200 | ||||||||
| 400 | 0.88 | 4.28 | 1570 | 1060×880×1180 | 660/820 | 1450×1200×2200 | ||||||||
| 500 | 1.04 | 5.23 | 1780 | 1090×900×1220 | 660/820 | 1500×1200×2200 | ||||||||
| 630 | 1.17 | 6.4 | 6 | 1860 | 1200×920×1150 | 820/820 | 1600×1200×2200 | |||||||
| 800 | 1.37 | 7.46 | 2180 | 1260×920×1200 | 820/820 | 1650×1200×2200 | ||||||||
| 1000 | 1.59 | 8.76 | 2590 | 1320×950×1250 | 820/820 | 1750×1300×2200 | ||||||||
| 1250 | 1.88 | 10.3 | 2980 | 1350×980×1320 | 820/820 | 1750×1350×2200 | ||||||||
| 1600 | 2.2 | 12.5 | 3580 | 1400×1120×1400 | 1070/1070 | 1800×1400×2200 | ||||||||
| 2000 | 2.75 | 15.5 | 4070 | 1440×1120×1520 | 1070/1070 | 1850×1450×2200 | ||||||||
| 2500 | 3.24 | 18.4 | 4820 | 1500×1120×1640 | 1070/1070 | 1900×1500×2200 | ||||||||
10KV SG (B) 13H environmentally friendly dry-type transformer
| Rated capacity (KVA) |
Voltage combination and tap range (kV) |
connection symbol |
No load loss (kW) |
Load loss at different insulation system temperatures (Kw) |
No load current (%) |
Short circuit impedance (%) |
Weight (kg) |
Dimensions(mm) (L in length,B in width,and H in height) |
Installation size |
With shell size (L×W×H) |
||||
| High Pressure (kV) |
High voltage division Range of acceptance (%) |
Low Pressure (kV) |
130℃(B) (100℃) |
155℃(B) (120℃) |
80℃(B) (145℃) |
|||||||||
| 100 | 6 6.3 6.6 10 10.5 11 |
±2.5 ±5 |
0.4 | Dyn11 Yyn0 |
0.29 | 1.69 | 1.5 | 4 | 590 | 850×600×830 | 400/450 | 1250×1000×2200 | ||
| 125 | 0.34 | 1.98 | 1.3 | 650 | 870×650×890 | 550/550 | 1300×1000×2200 | |||||||
| 160 | ±2×2.5 ±5 |
0.38 | 2.28 | 13 | 800 | 900×710×930 | 550/550 | 1300×1100×2200 | ||||||
| 200 | 0.45 | 2.71 | 1.1 | 880 | 940×750×980 | 550/660 | 1350×1100×2200 | |||||||
| 250 | 0.52 | 2.96 | 11 | 1050 | 990×770×1030 | 660/660 | 1400×1150×2200 | |||||||
| 315 | 0.64 | 3.73 | 1 | 1260 | 1020×790×1080 | 660/660 | 1450×1150×2200 | |||||||
| 400 | 0.7 | 4.28 | 1 | 1570 | 1060×880×1180 | 660/820 | 1450×1200×2200 | |||||||
| 500 | 0.83 | 5.23 | 1 | 1780 | 1090×900×1220 | 660/820 | 1500×1200×2200 | |||||||
| 630 | 0.94 | 6.4 | 0.85 | 6 | 1860 | 1200×920×1150 | 820/820 | 1600×1200×2200 | ||||||
| 800 | 1.1 | 7.46 | 0.85 | 2180 | 1260×920×1200 | 820/820 | 1650×1200×2200 | |||||||
| 1000 | 1.27 | 8.76 | 0.85 | 2590 | 1320×950×1250 | 820/820 | 1750×1300×2200 | |||||||
| 1250 | 1.5 | 10.3 | 0.85 | 2980 | 1350×980×1320 | 820/820 | 1750×1350×2200 | |||||||
| 1600 | 1.76 | 12.5 | 0.85 | 3580 | 1400×1120×1400 | 1070/1070 | 1800×1400×2200 | |||||||
| 2000 | 2.2 | 15.5 | 0.7 | 4070 | 1440×1120×1520 | 1070/1070 | 1850×1450×2200 | |||||||
| 2500 | 2.6 | 18.4 | 0.7 | 4820 | 1500×1120×1640 | 1070/1070 | 1900×1500×2200 | |||||||
