31.5MVA/220kV single phase traction 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 the 31.5MVA/220kV single phase traction transformer, 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 31.5MVA/220kV single phase traction 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 31.5MVA/220kV single phase traction 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:What exactly is the history of the Transformers.? (Starting with the comics)?
I am a fan but I haven't been able to find that out myself, if you find out let me know.
Q:Old transformers tv show question?!? 10 points for best answer!!!?
It depends what you mean, do you mean from the original 80's show The Transformers or the later show Transformers: Energon, which was part of the Unicron trilogy. The only one I remember small transformers 'activating' in is the second one. If you meant the original, I'd assume you were talking about the cassettes, which Soundwave and Blaster had. They weren't activated with any sort of green device but they were smaller Cybertronians that transformed into tapes and were stored in their 'tape-master's chest. This would include Rumble, Ravage, Frenzy, Ratbat, Lazerbeak and several other with make small appearances (Decepticons). There was Ramhorn, Rewind, Eject and Steeljaw along with a few others. (Autobots) Picture: tfwiki.net/mediawiki/images2/0/07 Official name: Cassette Next is the Unicron trilogy. In this the main focus of the show was that apart from the Autobots and Decepticons there was another faction, the 'Mini-cons', which were small and powerless on their own, but they could be used as power-ups by the larger 'bots, so they were sent into deep space for their own protection. These ones were 'activated' as such in that they formed a sword or shield or similar that could only be used by a larger bot other than acting independently as a small Cybertronian. They shared a lot of the same names as the 1980's continuity characters, but these are the ones I was talking about, they're about the size of a human. Picture: tfwiki.net/mediawiki/images2/2/2e Official name: Mini-con
Q:How come Transformers has made more money than Star Trek, Wolverine, Terminator, etc movies that have been mad?
the guys go crazy for megan fox.
Q:What is the reactive power compensation of the transformer?
The use of capacitors to compensate for reactive power, improve the transformer's active power output capability.
Q:12 VAC 60W Transformer?
Transformer rating is 60 watts ~ don't use total wattage over that. So with your three 10 watt bulbs, that totals 30 watts. Will be okay. You can actually use up to six 10 watt bulbs, or a total of 60 watts max. Been using light bulbs for 65 years !
Q:Can the transformer be replaced with a component?
Transformers are not only able to buck and boost, but also from the role of isolation. In fact, the circuit with the inductance of the circuit can also buck and boost, but there is no isolation of the role, there will be dangerous to use. Resistance can also buck, but the efficiency is low, the current is small, there is no isolation effect.
Q:Transformer how to do no load test
Transformer no - load test 1, the transformer no-load test power capacity of choice: To ensure that the power waveform distortion does not exceed 5%, the test sample of the no-load capacity should be 50% of the power capacity; the use of pressure from the pressure, no-load capacity should be less than 50% of the regulator capacity; The no-load capacity should be less than 25% of the generator capacity. 2, no-load test is to measure the rated voltage under no-load loss and no-load current, test high side of the open side, low side pressure, the test voltage is low voltage side of the rated voltage, test voltage is low, the test current is rated current percentage A few or a few thousandths.
Q:The main transformer is chosen in principle
Transformer selection, you can refer to the following, but still according to the actual production needs! 1, the number of transformers to determine    (1), the number of main transformer to determine the principle is to ensure the reliability of power supply. When one of the following conditions is met, two or more transformers shall be installed.    ①, there are a lot of first-class load and although the secondary load but need to set from the security (such as fire, etc.).    ②, when the seasonal load changes greatly.    ③, when the load is large.    For large-scale hub substation, according to the specific circumstances of the project can be installed 2 to 4 main transformer.    When installing multiple transformers, it is appropriate to group the transformer according to the characteristics and changes of the load in order to flexibly switch the corresponding transformer group. Transformers should be operated in the sorted manner. Transformer low-voltage outlet of the neutral and neutral ground wire should be laid separately. For the convenience of testing, in the ground circuit, close to the transformer to do a removable connection device.    (2), the general three-level load or capacity is not too much power and lighting should be a load with only one transformer.    (3), when any of the following circumstances, can be dedicated transformer    ①, when the lighting load is large or power and lighting using a common transformer seriously affect the lighting quality and lamp life, can be set for lighting special transformer.    ②, single single-phase load is large, should be set single-phase transformer.    ③, the impact of a larger load, seriously affect the power quality, can be set for shock load special transformer.    ④, when the seasonal load (such as air conditioning equipment, etc.) about the total load of the project 1/3 and above, it is appropriate to configure a dedicated transformer.
Q:why isnt megan fox going to be on Transformers 3?
there are a lot of versions of reasons why megan fox are not in transformer 3, some says cause megan wanted to be paid higher, some said that megan just can't stand the director as he was always yelling at megan and blah so. yeah. megan fox did lighten up the transformers series,she's hot and so, but she just can't act, to me transformer 3 or 4 or 5 or so on wont be any different without her. cause this movie just need a flower vase to round around with the hero, not a real actress.
Q:i need Transformer for my circuit?
not enough information wattage is determined by the load demand and the efficiency of the transformer all we can tell for what you provided would be the step down windings turn ratios what is being powered on the 3 vac side of your project?

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