| Customization: | Available |
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| Application: | Power, Electronic, Lighting |
| Phase: | Three |
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Oil-immersed transformers utilize oil as their principal insulation medium and cooling mechanism. This design encompasses various cooling methods such as self-cooling, air-cooling, water-cooling, and forced oil circulation. The key components of an oil-immersed transformer include the iron core, windings, oil tank, conservator, breather, explosion-proof tube (pressure relief valve), radiator, insulation bushings, tap changer, gas relay, thermometer, and oil purifier.
The silicon steel sheets within oil-immersed transformers are immersed in oil for extended periods, allowing the oil to permeate, providing elasticity and buffering, which significantly reduces operational noise. However, the on-load tap changer is located inside the oil tank, making its contact status invisible from the outside. Poor contact can lead to circuit breaker-like disruptions or the burning of the switch under high load conditions.
Operating Temperature: Oil-immersed transformers are designed to function optimally under specified cooling conditions as indicated on the nameplate. The top oil temperature should not surpass 90ºC. To prevent insulation aging, frequent top oil temperatures should remain below 85ºC, with alarm settings at 80ºC for additional safety.
Overload Management: Transformers can manage both normal and emergency overload conditions. It's crucial to install overload signaling devices or utilize comprehensive measuring instruments. For oil-immersed transformers, the overload signal should be between 1.1-1.2 times the rated current, while for dry-type transformers, it should range from 1.2-1.3 times the rated current (considering fan operation).
Post Overload Protocol: Upon activation of the overload signal, monitor load and temperature variations. If feasible, promptly investigate and address the cause of the overload. Should the overload exceed 1.3 times the rated current or if temperatures rise beyond safe limits, immediate load reduction is necessary. Regular data downloads and load analyses are recommended, especially for transformers prone to overload, with more frequent inspections based on usage patterns.
| 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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