1140MVA/500kV Three-phase integrated transformer

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Place of Origin: HeBeiBrand Name:


Model Number:






Coil Structure:


Coil Number:

3 Winding

Capacity: Rated Voltage:


Connection Symbol:

YNd11 Dyn11 YNyn0d11


Cover type or Bell type


MR or ABB or SMS

Packaging & Delivery

Packaging Detail:Mainbody --naked Disassembled parts -- crate
Delivery Detail:3 months



1. CESI certificate
2. High short-circuit withstand
3. Low loss, PD and noise
4. CTQC certificate
5. No leakage




The application of 1140MVA/500kV Three-phase integrated transformer can significantly improve the economy of the UHV substation, and matches well with the transmission capacity of UHV lines, which has wide prospect of application. Because of its large capacity and large volume, the whole transportation weight with nitrogen is about 470-490 tons, and due to the restricted transport conditions, the transportation becomes the critical issue for application of the 1140MVA/500kV Three-phase integrated transformer. In order to make the products applicable to any UHV substation in our country, the state grid of corporation of China set the "A study of easy-transport large capacity UHV Transformer” as a key scientific research projects, and entrusted BTW to carry out the research.

During the process of research and development, BTW adopted the advanced design technology and modular design, the transformer can be transported disassembly and with advantages of compact core and winding body, less transportation weight and low transportation cost, effectively solves the need of UHV construction in the transportation restricted areas. By using the most advanced 3D magnetic field calculation software, BTW performed detailed analysis and calculation for the magnetic flux leakage and eddy current loss of the transformer coil, iron core and oil tank steel structures. Besides, by using of the advanced electric field calculation software, BTW performed detailed analysis and calculation of main longitudinal insulation, and mastered the arrangement of the main longitudinal insulation of large capacity UHV transformer and the control of distribution of winding magnetic flux leakage. All of which make the products with low loss, low noise, small volume, strong anti short circuit ability, no local overheating and other significant advantages, and guarantee the long-term safe and stable operation.

The world's first on-site assembled large capacity UHV Transformer’s right at the first time once again filled the gap in the field of UHV transformer research after Chinese transformer industry overcame the difficulty of integral transport of the 1140MVA/500kV Three-phase integrated transformer, which marks BTW has fully occupied the world transformer industry technical peak. The successful development of the product filled the gaps in the domestic technology and met the urgent need of UHV construction application in our country, greatly improved the technical level and manufacturing ability of BTW in terms of UHV Transformer products.


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Q:How do transformers work, no not the robots.?
A transformer is a device that can be used to increase voltage and decrease current (or vice versa). It uses AC power and is based on Faraday's law of induction (mutual induction). A transformer is made up of two coils, each with a different number of turns, linked magnetically through a soft iron core. The magnetic flux from one coil links the other through the core. When the flux in one coil changes, the flux passing through the other will change, inducing a voltage (emf) in the second coil. The coil connected to the AC power source is known as the primary coil (number of turns Np), while the coil in which voltage is induced is known as the secondary coil (number of turns Ns). If the primary coil sets up a changing flux, the voltage in the secondary coil depends on the number of turns in the secondary. The transformer is assumed to be ideal in which the resistance of the coils is negligible and all the flux in the core links both primary and secondary windings. There will be no energy loss in an ideal transformer.
Q:Need help designing a small transformer?!?
Transformers follow Ohm's Law and multiply or divide voltages based on the number of turns making each coil. You need only ensure your two coils have the appropriate number of windings. As for actual numbers for the windings, 1.5mA is an absolutely tiny amount of current, so you have considerable flexibility in this. If you are looking to build a transformer, you should look up the information on what you're planning to use for a core, to be able to calculate the voltage across the secondary coil.
Q:doorbell transformer problems?
Take the cover off the bell and see if it runs on batteries. If it runs off a transformer you can touch the transformer it should be warm. If it is take the button off the outside and touch the 2 wires together if the bell works its the button. Its only 24 volts you won't get hurt.
Q:Is it possible to repair a transformer for a halogen lamp?
If you put the wrong bulb in they can burn out. You say it's a 12 volt system. There are different wattages, and if you put too high a wattage you will cook the transformer. No, you can't repair them. Not unless you have the machinery to delaminate the metal core, unwind and rewind new copper coils. You COULD do it by hand, but by the time you've gotten it done, the time you wasted could have been spent working and earning a buck to replace the lamps. Make sure you're not going OVER the wattage specified. Here's some numbers: 12 (volts) times X (amps) equals W (wattage). If the transformer tells you it puts out 12 volts at 3300 ma (mili-amps) (or 3.3 amps) then 12 X 3.3 equals 40 (Watts). If your transformer is designed to operate a 40 watt bulb then it must be capable of putting out 3.3 amps. If it's half the wattage, say - 20 watts: 20 / 12 1.67 (amps). Knowing the capabilities of the supply and not demanding more of it than it's rated for will prevent it from smoking (burning out). Hope this helped. '')
Q:old transformers cartoons.what did you think of them?
I loved the original Transformers' cartoon. Optimus Prime was the ultimate good guy and Megatron the paramount bad guy. No matter the odds the Autobots never gave up. Some of the coolest characters were Autobots and Decepticons. The Dinobots were just freaking cool and I always like Soundwave. The only reason the movies even had a chance of success was that they brought back the original voice of Optimus Prime. Optimus dying was a shock to be sure, but they still did a good job without him for awhile. I have happily introduced my son and daughter to the original series and they both liked it more than the new movies. It is okay you don't like the original cartoons. They aren't everyone's cup of tea.
Q:Transformers Animated Season 3?
That would suck sooooo bad if it is cancelled. All that build up in the first season with super villains and no Megatron and like, 3 Decepticons till the end of season 2 for what! To take it all away just as its getting good and finally setting up a full on Autobot Decepticon war There better be a season 4 or this series will go in the forgotten bin with Robots in Disguise as another series that took forever to set just for 1 big battle then that's the end. But if it is the end then that will teach the writers for holding out on what fans really want. I can not sit through season 1 or 2 again, except the season 2 finale.
Q:Transformer Lightning
Transformer lightning strikes may result in damage to the transformer winding insulation due to overvoltages
Q:is transformers 2 a good movie?
I liked it, but it definitely could have been better. The first one was a LOT better, but if you liked the first one, you will like this one. It was an action movie, for sure. And it was funny. It was good, but not super great.
Q:Please could someone assist on electrical transformers?
To improve the performance of a transformer, you have to:- [1] Reduce the copper losses, and [2] reduce the iron losses. Copper losses can be reduced by using copper wire of the highest purity; and by using copper wire that has the thinnest possible layer of insulating material on it. These measures, taken together, reduce the length of the wire and therefore its resistance. Iron losses are reduced by using magnetically soft iron in the laminations. This is the type of iron that has a tall and narrow hysteresis loop. Using copper wire with thin insulation (as mentioned above), keeps the windings close to the iron and so reduces magnetic leakage. A third measure is to use very thin laminations and to insulate them with very thin material as this will reduce eddy currents. It is very expensive to build a 99% efficient 250 MVA transformer. The losses in a 94% efficient version, are often cheaper to manage than the extra cost of making the 99% version.
Q:How do you read Step down transformers?
Bascally you are right. Watts is the maximum power, and dividing that by voltage provides amps. The transformer will pass what its load is consuming. If there is not enogh source eupply for the load, the source will burn out or blow its fuse/breaker.

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