Main functions and characteristics
H grade insulation
The insulation and heat resistance grades of dry type transformers are B, F, H, C and so on. The heat resistant temperatures were 130, 155, 180 and 220 respectively. The product uses DuPont new material and new technology. The insulation heat resistance grade of SG (B) dry type transformer has reached H grade, and the insulation heat grade of key parts has reached C level.
security
SG (B) series of products are today’s highest safety performance dry type transformers. All insulating materials do not support combustion, self extinguishing and non-toxic.
SG (B) products are more superior in special environments such as high fire protection requirements, heavy load fluctuations and dirty and humid environments, such as airports, power plants, metallurgical operations, hospitals, high-rise buildings, shopping centers, densely populated areas, and electricity, subways, ships, petrochemical, nuclear power stations, nuclear submarines and other special environments. In accordance with the requirements of the user, it can be equipped with a fan and a shell.
Stable
SG (B) series of new products of special coil design, technology and materials, so that the products have excellent performance (moistureproof, mildew proof, salt fog), more able to withstand heat shock, never crack.
Nomex0 aromatic polyamide based insulation system maintains excellent performance and mechanical properties throughout the service life of the transformer. Nomex0 products are not easy to age, shrink resistant and anti compression, plus elastic strength, so it is possible to ensure that the transformer remains tightly structured even after several years of use, and can withstand short circuit pressure.
environmental protection
After the life period of the SG (B) series, the new product can be decomposed and recycled to meet the user’s requirements and overcome the defects of the epoxy resin cast dry transformer because the resin glass wire is solidified into the whole, resulting in the non decomposability after the life period and the pollution of the environment.
Overloading ability
SG (B) series of new products adopt new structure, new material, new technology, good heat dissipation, long heat life and high load capacity. It can run safely and reliably for a long time under 120% overloads. In the IP23 environment, no forced air cooling can still run at full capacity for a long time.
Temperature of the hottest points (for reference only)
| Temperature class | B级 | F级 | H级 | C级 |
| Mean temperature rise (K) | 80 | 100 | 125 | 150 |
| Max. ambient temperature (°C ) | 40 | 40 | 40 | 40 |
| Temperature tolerance of the hottest point (°C ) | 10 | 15 | 15 | 30 |
| Max. temperature (°C ) | 130 | 155 | 180 | 220 |
Main Technical Parameters for 10KV SG(B)-30-2500 type
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Mob: +86 0 138-3227-7552 (Jack) |
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Mail: weifan-Jack@mfrdo.com |
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WhatsApp: +86 138-3227-7552(Jack) |
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Q1. Are you the manufacturer or trader?
A:WEIFAN is a leading & professional manufacturer located in hebei province of China.
Q2. What is your main markets?
A:Our main market is in home & a half in South-East Asia, Middle East,West-Africa, East-European countries & Some South America..etc
Q3. What is your delivery & after-sales serive?
A:The delivery is according to order qty, normally for containers order we need 1 month. Per each month 20 containers (20’ft or 40’ft)are no problem for us .
We can answer user’s question and solve their problem in 24 hrs per each day and give full technical support in time to all of our products.
Q4. What is your product warranty?
A:Firstly we have quality certificates like CCC, ISO9001..etc .We supply 18 months quality guarantee,during this period we supply free repair,maintenance and technical support.
Q5.Do you accept OEM and ODM?
A:Yes. Our R & D team owns latest technology ,can develop & produce products as customers’ drawing & under their brand
Q6. What is your payment terms?
- 30% T/T in advance as deposit ,balanced against the shipping documents
- irrevocable L/C at sight for order which amount is over 100 thousand USD
- for old business partner,we can negociate together for other special terms
- For samples, we accept T/T,Western union, moneygram, paypal..etc
Q7. What is your terms of packing?
A: Generally, our packing is wooden case or customized packaging according to customer needs.
