The dry-type transformer consists of an iron core composed of silicon steel sheets and a coil cast with epoxy resin. An insulating cylinder is placed between the high and low coils to increase electrical insulation, and the coils are supported and restrained by a pad.
Because epoxy resin is flame retardant, flame retardant, self-extinguishing solid insulating material, that is, safe and clean. With oil-free, inflammable, low operating loss, outstanding disaster prevention ability, it is widely used in high-rise buildings, airports, wharfs, power plants, residential areas or complete substations and other places.
Resin-insulated dry-type transformers are safe, non-flammable, fireproof, and pollution-free. It can be directly installed in the load center, maintenance-free, easy to install, low overall operating cost, low loss, good moisture-proof performance, can operate normally under 100% humidity, and can be put into operation after shutdown without pre-drying. Low partial discharge, low noise, strong heat dissipation capacity, 120% rated load operation under forced air cooling. Equipped with a complete temperature protection and control system, it provides a reliable guarantee for the safe operation of the transformer with high reliability.
Main material and characteristics: Class F coil insulated copper wire as conductor, glass fiber and epoxy resin composite materials for insulation, its coefficient of expansion similar to the copper conductor.with good impact resistance, temperature changes, crack resistance. Glass fiber and epoxy resin constituent all have self-extinguishing, it does not continue to burn, it does not produce toxic gases and pollute the environment.Epoxy resin has good insulating properties, particularly suitable for the production of high-voltage level
Manufacturing process: The winding wound on the high-accuracy winding machine, when winding pave cast grass fibre around the external and internal of the winding, there be armed air passage for transformer of large ca Then dry it in vacuum.The whole casting and solidifying process is performed according to the pi curve of casting control terminal, which transferred through computer network by process department every process can be monitored momentarily and adjusted for the various surroundings. The precise process ensures free bubble and free hole of winding.
1. Safe, not combustible, fireproof can be installed directly in the load center
2. Maintenance-free, easy installation, low economic operation cost
3. Good moisture resistance can operate normally under 100% humidity
4. Low loss, low noise, good insulation, small local discharge, no pollution, loss
5. Good heat dissipation, strong overload capacity, under the condition of air cooling, can overload 50%
6. Reliable operation, with perfect temperature protection control system, can ensure the safe operation of the transformer
7. Small volume, lightweight, stable structure, strong lightning shock resistance, high mechanical strength, temperature change resistance, anti-sudden short circuit ability
Rated Capacity
(kVA) |
Voltage Combination and tap range |
connection of
transformer winding |
No-load loss
(w) |
Load loss (W) |
No-load current (%) |
Short circuit impedance (%) |
| High voltage(KV) |
High voltage taps range (%) |
Low voltage(KV) |
| 30 |
6
6.6
6.6
10
10.5
11 |
±5%
±2x2.5% |
0.4 |
Dyn11 |
130 |
710 |
2.6 |
4 |
| 50 |
190 |
1000 |
2.2 |
4 |
| 80 |
260 |
1380 |
2.2 |
4 |
| 100 |
280 |
1570 |
2 |
4 |
| 125 |
330 |
1850 |
1.8 |
4 |
| 160 |
380 |
2130 |
1.8 |
4 |
| 200 |
435 |
2530 |
1.6 |
4 |
| 250 |
505 |
2760 |
1.6 |
4 |
| 315 |
615 |
3470 |
1.4 |
4 |
| 400 |
810 |
4880 |
1.4 |
4 |
| 500 |
940 |
5880 |
1.2 |
4 |
| 630 |
910 |
5960 |
1.2 |
6 |
| 630 |
1065 |
6960 |
1.2 |
6 |
| 800 |
1240 |
8130 |
1.1 |
6 |
| 1000 |
1460 |
9690 |
1.1 |
6 |
| 1250 |
1715 |
11730 |
1.1 |
6 |
| 1600 |
2135 |
14450 |
1.0 |
6 |
| 2500 |
2520 |
17170 |
1.0 |
6 |
Jecsany Electrical Equipment Co., Ltd. was established in 2009, and it is backed by China Electric Porcelain Import and Export Co Ltd. Since 1981, the company has focused on the research and development, manufacturing and export of professional high-voltage power products, and has accumulated profound technical background and rich industry experience in this field, and has built a reputation for delivering high-quality products and exceptional service to our clients.
Moreover, the company gives full play to its own R&D and production experience advantages, and strives to cultivate a professional team that can match products with the fastest speed and highest accuracy. At present, the company has professional teams engaged in the power industry in South Africa, USA, South America, Vietnam and other places.
After years of development, the company has gradually become a professional supplier of diversified products including Power Transformers, Auto-Reclosers, Vacuum circuit breakers, Lightning arresters, Line protection devices, Switchgears, Fuse cutouts, Polymer / Glass / Porcelain insulators, Power line fittings and Tools, etc. Jecsany can provide customers with one-stop full-service from product development, design, manufacturing to transportation, installation and after-sales service.
Jecsany Team is the backbone of our success, and we are dedicated to fostering a work environment that encourages innovation, collaboration, and continuous improvement. We are constantly investing in our facilities and technology to ensure that we stay at the forefront of the industry, delivering high-quality products and services that exceed expectations.
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