Product Description
Oil immersed transformers utilize oil both as the primary insulation method and the cooling medium. Various cooling techniques include oil immersed self-cooling, oil immersed air-cooling, oil immersed water-cooling, and forced oil circulation. Essential components encompass the iron core, winding, oil tank, oil pillow, respirator, explosion-proof tube (pressure relief valve), radiator, insulation sleeve, tap changer, gas relay, thermometer, oil purifier, and more.
Between the silicon steel sheets in oil immersed transformers, long-term immersion allows oil penetration, granting the transformer oil elasticity and a buffering effect, resulting in low noise levels. However, the pressure regulating switch inside the tank remains invisible from the outside during pressure regulation. Poor contact during regulation can lead to circuit breaker equivalence, and high loads may burn out a poorly contacted switch.
Operating temperature: These transformers can operate as specified on the nameplate under suitable cooling conditions, with the top oil temperature not exceeding 90 ºC. To prevent insulation aging, it is recommended that the top oil temperature should generally stay below 85 ºC, with an alarm set at 80 ºC to ensure timely interventions.
Overload: Transformers are designed to handle both normal and accidental overloads, with overload signals as a vital feature. If signals are unavailable, comprehensive measuring instruments must be used. For oil immersed transformers, the overload signal should be set at 1.1-1.2 times the rated current, while for dry-type transformers, it should be 1.2-1.3 times the rated current (considering fan current when running).
Once the overload signal activates, careful monitoring of load and temperature changes is crucial. If feasible, promptly investigate the cause of the overload. For high overloads (over 1.3 times the rated current) or temperatures exceeding the upper limit, the load must be reduced. Monthly data downloads from comprehensive side instruments are recommended for analysis. Shorten the data download cycle for transformers showing overload tendencies, and closely monitor load and temperature. Prompt inspections and checks are essential to mitigate overload causes and prevent damage due to excessive load or temperature.
Detailed Photos
Product Parameters
The iron core is meticulously rolled without seams. The R-type iron core's width ensures a circular cross-section, whereas the stepped iron core comprises multiple layered widths. Post-formation, vacuum annealing is performed to eradicate stress and minimize losses.
The S11 and 10KV low loss power transformers feature a fully sealed corrugated oil tank design, preventing transformer oil from contacting external air. This design inhibits moisture absorption, preserving insulation strength. The sealed environment also prevents oxygen from entering, thereby avoiding insulation material aging, prolonging product lifespan, and enhancing social benefits.
Technical features: Energy saving: The S11 model achieves an average reduction of 30% in no-load loss and 25% in load loss compared to GB/T6451 standards, coupled with a 20% decrease in operating costs, marking significant energy savings.
Long service life: With a fully sealed oil tank structure, the transformer oil remains air-free, extending its lifespan. The tank can be bolted or welded at the edges, further ensuring that the transformer oil remains uncontaminated by external elements, thereby enhancing durability.
FAQ
| Are you the manufacturer or trader? |
| GANG KONG is a leading & professional manufacturer located in Zhejiangprovince of China. |
| What is your main markets? |
| Our main market is in home & a half in South-East Asia, Middle East,West-AfricaEast-European countries & Some South America..etc |
| What is your delivery & after-sales serive? |
| The delivery is according to order gty, normally for containers order we need 1month. Per each month 20 containers (20'ft or 40'ft)are no problem for us . Wecan answer user's question and solve their problem in 24 hrs per each day andgive full technical support in time to all of our products. |
| Do you accept OEM and ODM? |
| Yes. Our R & D team owns latest technology ,can develop & produce products ascustomers' drawing & under their brand |
| What is your payment terms? |
| a. 30% T/T in advance as deposit ,balanced against the shipping documents |
| b. irrevocable L/C at sight for order which amount is over 100 thousand USD |
| C. for old business partner,we can negociate together for other special terms |
| If i want to visit you ,how to do ? |
| Our company is located in Yueqing city of Zhejiang province China,which is about40 minutes by car to Wenzhou air port & 30 minutes from Yueqing train station.About 1 hrs by air from Shanghai international airport and 1 hrs from Ningbo bytrain. lf you need invitation letter before come to China,we can give it to you. |
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