278MVA/500kV single-phase double winding OLTC converter transformer

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 pc

Supply Capability:: 1 pc/month

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Quick Details

Place of Origin:	HeBei	Brand Name:	CNBM	Model Number:
Usage:	Power	Phase:	one	Coil Structure:	Toroidal
Coil Number:	2 Winding	Capacity:		Rated Voltage:	278MVA/500kV
Connection Symbol:	YNd11 Dyn11 YNyn0d11	Tank:	Cover type or Bell type	OLTC:	MR or ABB or SMS

Packaging & Delivery

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

Specifications

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

Description

The application of 278MVA/500kV single-phase double winding OLTC converter transformer can significantly improve the economy of the OLTC substation, and matches well with the transmission capacity of OLTC 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 278MVA/500kV single-phase double winding OLTC converter transformer. In order to make the products applicable to any OLTC substation in our country, the state grid of corporation of China set the "A study of easy-transport large capacity OLTC 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 OLTC 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 OLTCtransformer 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 OLTC Transformer’s right at the first time once again filled the gap in the field of OLTC transformer research after Chinese transformer industry overcame the difficulty of integral transport of 278MVA/500kV single-phase double winding OLTC converter 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 OLTCconstruction application in our country, greatly improved the technical level and manufacturing ability of BTW in terms of OLTC Transformer products.

Q: Can a electrical transformer have more the 1 input, while only having 1 output so that the power is combined into the 1 output,or would multiple inputs make the power feed back onto the other inputs and overload them.: Not an easy thing to do and definitely not for a beginner to attempt. Your wording of the questions shows you do not have the background knowledge to try it. Some transformers may be hooked so they have different input voltage ratings but what you are trying to do I'm not sure.

Q: if i take a small transformer meant to be used at 120v:9v 60hz, and discharge a 360v 100uf capacitor (or similar) into the 9v winding, will i get a high voltage pulse on the 120v winding?: Yes, and you can shock your friends. I use to do this all the time. BTW this is how the first stage of a tazer works, after they get it up to about 10,000V they switch over to voltage doubler circuit to push it on up.

Q: What is the use of the lower part of the transformer made of rail?: Transformer The lower part of the box has two structures: 1 set the wheels. This requires the installation of the track on the basis of the transformer, and then the wheels fixed on the I-beam track, this way to facilitate the maintenance and installation of the transformer handling, but because of the large and larger transformers, the use of wheels is already less; I-beam or channel as a load-bearing beam. This transformer does not need to set the track, on the basis of the transformer relative to the location of the beam weighing embedded flat steel, the transformer in place after the load-bearing beam fixed fixed on the base embedded parts. Need to move the transformer, the chisel spot welding, with the hoist and other machinery will slowly drag the transformer.

Q: What is the maximum current of the 800KVA transformer? What is the current? Is how to calculate, ask you master: 10KV / 0.4KV, 800KVA Transformer rated current is: High pressure side, I = 800 / (1.732 * 10) = 46.2A Low pressure side, I = 800 / (1.732 * 0.4) = 1154.7A Low side of the economic current is about: 1154.7 * 70% = 808.3A

Q: i have one traditional old mig welder with transformer and i would like to buy one inverter mig wilder because its lighter weight,so which is better in working and less trouble?: stick welder is less maintenance

Q: I am build a band pass filter but I am wondering if one of the inductors in my filter can act as a transformer at the same time. I'm assuming not since it would be sending all its magnetic energy into the secondary rather than back into the primary. Can someone confirm this for me please? Also, if it DOESN'T act as an inductor than would it be okay to put it in parallel into my filter? Or do I put it in series? Where do I put it lol?Thanks: Yes - a transformer is an inductor with a second winding that is coupled to the first via the magnetic field they share. But using the transformer as an inductor will reflect whatever load is on the secondary winding into the primary to diminish the Q and possibly alter the inductance of the primary, and this will affect the bandpass and slope of your filter. Best to get the filter section working right and follow that with a buffer amplifier to isolate it from downstream loading.

Q: HELP!! My boyfriend wants to see transformers and he told me I had to study up first lol! He wants me to know who all of the characters are because apparantly its from a comic or cartoon or something? I dunno but can anyone tell me anything about the TRANSFORMERS? I need to know characters and storyline etc. basically just anything u knowThanks lol.: I have already seen it. It has opened here is Australia several days ago. I am NOT a transformers fan and only knew some names because I knew kids who played with the dolls. I am NOT into the comic either. I can tell you now YOU DO NOT NEED to know any names. EVERYTHING you need to know is explained in the movie. But DO go and see it. It is an AWESOME movie. (It takes a lot in a movie to impress me - so that's a lot for me to say it is an awesome movie. Acting is not the best you'll ever see But over all - it's VERY VERY well done)

Q: I understand US voltage appliances use 2 x 110v hot leads to make 220v @ 60 Hz. The voltage in China is 220v @ 50 Hz. Would I have to get 2 step down transformers to make 2 x 110v hot leads? I found transformers making 220v @ 50 Hz to 110v @ 60 Hz, but only one lead. How can I make it work over there? I understand there are ranges at 220v made specifically for Europe and China at 220v, but I love this range. I want to use this range made for the US in China. What would be the way to do this? Any help would be grreatly appreciated!: I appreciate your notion of taking a U.S. product and using it in China. Makes me warm all over with irony. If you don't have an answer here, try posting in the Engineering section. Good luck.

Q: Here I am building prototype transformers for testing, using 1 ft length aluminum conductors of 1/2 by 1/2 inch width square conductors. I am structuring the (aluminum square tube)windings(connected at corners by ordinary round copper wire) in return layer diagonals, ( the pattern set by odd magic square sequences) to establish maximum internal capacity in the windings. If the current in the windings is opposite between every internal lateral square facing, most of the external field around the windings is cancelled, but internally between the windings the magnetic loops will be in unison. I therefore wish to put insulated steel tube sleeves around the internal aluminum loops of the wiring array, for a very unconventional honeycomb type core transformer. I should be able to measure for eddy current output on any steel sleeve by shorting the ends of the outside steel segment with an amperage meter. A conv. secondary will also need copper loops wound lengthwise around the steel.: An AC transformer connects AmpereTurns in the Primary to AmpereTurns in the Secondary using the time varying magnetic field in the core. The maths for the size of the core is well established. If you double back on turns they do not count as part of your ampereturns - unless you shield the doubled bit. Such methods are used in shaded pole motors. The only way to lighten the Tx is to use higher frequencies in the core. This 'dumps' the magnetic energy into the secondary more often so you can use a smaller core (bucket of energy!) The magnetic field is always perpendicular to the current and hence so are the core loops (in a Vector Notation sense - not necessarily physically) If you introduce Iron windings in the windings space you will get bigger Ohmic Losses. I hope this helps - you obviously have a plan to make hyper-efficient Tx but they are already near 0.999 efficiency.

Q: Do you think transformers is a good movie?Whos your favourite team autobots or decepticons?Whos your favourite transformer?And whats the best scene in the film?: Transformers was a AWESOME MOVIE!, but it really annoys me when people tell me that the only thing good was the special affects. It takes really talented actors to play only on green screen, and the acting was very funny AND dramatic. My favorite are the Deceptions, just cause they have those really small things that can turn into stuff. I can't remember what they were though. My favorite transformer is Bubblebee, because it can talk through the radio which when I was kid was what I wished I could do. I my favorite scene probably is when the Autobots are causing mayhem while Sam is trying to find the glasses. I love it that Mojo peed on that one.

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