Introduction:
Low voltage pure-porcelain bushing with flange structure plays an important role in reducing the level of partial
discharge,improving the flexural strength and reducing leakage.
In addition ,the cast aluminum flange,instead of the previous traditional pressure claw structure,not only
improves the overall appearance of the product,but also facilitate the on-site installation.
Presently,the annual production capacity of 24kv and above voltage bushing is 30,000 and nearly 5000
supporting equipment for 110kv and above voltage current transformer is provided annually. We are capable of
high and efficient productivity in casting,processing,assembling and testing. The earliest product has been
running for more than 10years.
With continuous innovation and improvement,our products will become perfet and we will keep rolling out new
products eliminating hidden dangers in sealing bushings and achieving flexural strength and excellent
appearance.
Technical parameters:
| Rated voltage:Ur(kV)/nominal voltage |
24/20 |
40.5/35 |
| 1min power frequency withstand voltage(kV)/AC |
Dry |
58 |
95 |
| Wet |
50 |
80 |
| Lighting impulse full wave withstand voltage(kV)/BIL |
125 |
200 |
| Creepage distance(mm) |
744 |
1260 |
| Current level(A)/Ir |
12000A/16000A/20000A |
12000A/16000A/20000A/25000A/35000A |
| Type |
BFW-voltage level/current level-4 |
| Standard |
GB/T4109&IEC60137 |
| Bending load |
4000N |
| PD at Um |
≤10pC |
| Installation and operating environment |
Horizontal or vertical installation and operating in air or box |
Symbol meaning: B-for transformer; D-single insulator; F-composite porcelain insulation; J-with additional insulation; L-through cable (or current transformer can be installed), the number before "/" in the bushing model indicates the rated voltage ( KV), the number after "/"' indicates the rated current (A).
The main features of transformer flange bushings are as follows: No leakage and good sealing performance. The sealing structure of the bushing is between metal flanges. After sealing, there is no gap between the upper and the lower flange, and the rubber gasket has no leakage, which avoids aging and cracking caused by the exposed rubber gasket. The rubber pads are double-line sealing rubber pads to ensure a reliable seal. It has high shock and blast resistance and good mechanical strength. The aluminum alloy flange of the bushing is produced by aviation technology, and the porcelain bushing and flange are glued together after being clamped by a special process. It has high mechanical strength, corrosion resistance and beautiful appearance, and is suitable for special environments.
No partial discharge, good electrical performance. After the optimized design, the electric field is more uniform, there is no floating potential, and the partial discharge is less than 10pc.
Reasonable structure and good safety performance. The product design has a large current carrying margin, and adopts self-cooling and oil circulation cooling design, which reduces and avoids overheating and ablation of the conductive rod during long-term or overload operation.
Easy installation and good versatility. The casing is designed according to the characteristics and conventions of the domestic industry, and can be interchanged with the existing casing. It has good versatility and is convenient for model selection and product layout. Flanged bushings reduce installation accessories and labor.
Bushing Factory Profile :
Technical leadership through continuous innovation
Excellent products through fine workmanship
Stable and reliable quality through persistent improvement
Assurance of consumer satisfaction through high-quality service
Main Products:
Current transformer used in GIS and GCB
Epoxy casting current transformer
Current transformer used in transformer
46kv and below voltage transformer bushing with low pd
Oil impregnaged paper condenser bushing of 40.5 above voltage
Epoxy impregnated condenser bushing of 40.5 above voltage
GIS bushing
Dry equi-potentil porcelain post insulator and porcelain house
Copper and aluminum casting and fabrication
Disconnector for neutral spot of transformer,arc horn,and zero sequence CT
Set of high-voltage test equipment,filter in partial discharge testing
Production Facility and workshop
Company Introduction
NingboVille Enterprise Co.,Ltd.is a combination of Transformer R&D center, production, sales and
after sales service,possesses of strong technical strength andexcellent manufacturing equipments, as
well as modern Office facilities. It specially produces large scale power transformer and industrial
transformers of high quality and reliability. A large share of its resources are devoted to research and
development of industrial and special transformers and reactors for any special application,such as the
iron and steel and electrometallurgical industries.The company main working is suppling,engineering,
designing,manufacturing, executing, and commissioning for transformer .
Why Choose Us
FIRST-CLASS PROCESSING AND TEST EQUIPMENT
We have more than 500 sets of sophisticated, advance production and test equipments, complete and perfect processing
equipments, and scientific and rational processing technology, which guarantee first-class products, Authorized by the
Bureau of Zhejiang Technology Supervision, Quzhou Fangyuan Inspection Company of Power Transmission and
Transformation Equipment, whick is based on our testing center, undertakes the quality inspection of the industry in our
province, this is a solid guarantee for our excellent product quality.
BEAUTIFUL ENVIRONMENT
We are confident that good products come from good personnel, and good environment makes qualified personnel. The
company is committed to creating a garden-like working environment for employees. We have green belts, modern
standardized workshops and well-planned parks where we sow our youth; we work hard, so we are harvesting the future.
With the first-class quality products, reasonable price and excellent after-sale services.product not only best-selling all
over the country,but also in the international market have higher credit, such as Thailand, Vietnam, Myanmar, Indonesia,
alaysia,Philippines, Ethiopia and Nigeria, Saxonstan, Uzbekistan, Korea, Turkey, Sudan, Iran etc. especially in the steel
enterprises, VILLE production of transformers already have high reputation.
){kind=link}