400MVA/220kV main transformer power plant

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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:	400MVA/220kV
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 400MVA/220kVmain transformer power plant 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 400MVA/220kV main transformer power plant. 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 400MVA/220kV main transformer power plant, 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: How do transformers work detailed descriptions please. Also how are the voltages stepped up or down?: Transformers can e used only for A.C the fluctuating current in the primary coil produces a magmetic field.this magnetic field by mutual induction makes a current in secondary coil The no:of turns in primary and secon determines thr rating of transformers more the no:of turns more magnetic field will be produced in primary and less the no:of turns in the secon lesser will be the current induced and vice versa For more details visit

Q: Transformer total circuit breaker rated current 380v, rated current 1000a, the rated capacity and output power how to calculate, I did not learn more points: Kva is apparent power, KW is active power. inspecting power: S = 1.732UI = 1.732 × 0.38 × 100 ≈ 65.8 (Kva) Active power: P = 1.732UI cosφ = 1.732 × 0.38 × 100 × cosφ

Q: A transformer is used to step down form the New Zealand mains voltage of 230 V to 110 V for use with an electric razor from the USA. (a) If the razor draws a current of 0.15 A what current (at least) is drawn form the 230 V line? (b) What is the ratio of the loops in the primary and secondary coils of the transformer?Could you please include the equations you used, and your working.: Since there is no evidence to indicate any inefficiency of this transformer, you have to assume that it is 100% efficient, with input power equaling output power. Input power Vin * Iin Output power Vout*Iout Equate: Vin*Iin Vout*Iout Solve for Iin, our unknown: Iin Iout * Vout/Vin Data: Vout 110 V Vin 230 V Iout 0.15 A Result: Iin 0.072 As for the ratio of loops, the number of turns in each coil is proportional to the voltage across each coil. Thus, the turns ratio equals the voltage ratio of 110/230 0.478. That is to say, there are 2.1 turns in the primary coil for every individual turn there is in the secondary coil. The primary coil is the coil plugged in to the line voltage of 230 V. The secondary coil is the coil in to which the load plugs in, at load voltage of 110 V.

Q: around the house. Im looking for a step up transformer to handle 1.5VAC-18VAC with a ratio of 1:10 or 1:20. Which household objects would contain this??: Depends on your house. Unless you collect electronic parts, the odds are about zero. Even inside appliances and such, the only tranformers are stepdown from 120 to about 12 volts. .

Q: i have read different forums explaining what really is an isolation transformer but unfortunately i am having trouble on grasping the main idea? please help, why do they say that isolation transformer can help a person being electrocuted even if he touches one of the secondary terminals??? how is that??? thank you: you know, transformer passes AC only not DC. Isolation means here is the isolation from the mains AC out let. Once the mains input voltage is not there in the primary, there will not be any secondary voltage as well. Hence one will not be electrocuted once the primary winding is being disconnected from the mains.Hence you are isolated from live and neutral of the mains outlet.One still gets electrocuted, when touched in secondary terminal provided that the primary terminals are connected to the mains input.Only the difference is that he/she is not contact with the the mains input voltage(Outlet) of having live and neutral terminals.Now, briefly saying, you are isolated from the Live and neutral terminal of the mains outlet and hence you are not direct in contact with the live and neutral terminals which may cause the current circulation(Close circuit) from live to neutral via load or ie your body(if you touch the only even one live wire or faulty neutral) and then get electrocuted. Now in case of secondary terminals, if one touches one of the secondaries(Be ware of the High voltages and have Safety First) there is no neutral to get the closed circuit and wont get electrocuted.). But oe still will get electrocuted if the path is leaky. Again safety First.Thank you.

Q: I am throwing my sons 7th birthday party, and again this year it is Transformers. He is asking to have some unique foods as oppose to traditional party pizza. We, of course will still have a cake but I am drawing blanks to food ideas. Does anyone have any suggestions? Thanks in advance!!: Here's a really easy nacho dip that tastes awesome! 1 package Velveeta mexican chese (you can do spicy or mild) 1 can Hormel chili +/- green onions Melt it in an oven-safe bowl in the Microwave or oven (for however long it takes to be all melted) stirring occasionally, and eat it with tortilla chips. It's awesome!!

Q: I have contacted Crate and they gave me a list of parts dealers but all insist that they do repairs and not sell just power transformers. I am looking for a part #94-029-01. Thank you for any help!!: First, what you need to know is the secondary voltages of the transformer you wish to replace. A part number is nice, but tells you very little, unless you have a book on hand, and usually, these numbers are only for that product line (in house) part numbers. I can tell you where to go to find a power x-fmr. but will need to know: How many watts will said amplifire send to the speakers, how many wires come off of the secondary, and how big is it? If you can get a schematic drawing of your amplifire with power transformer output voltages, I can tell you exactly where to get a transformer from. Feel free to e-me. Why did it fail? Are you sure that the power transformer is bad? There may be other issues, here. I rarely see a transformer go bad under normal use. If the fuse blows, replace it with a 1/2 amp larger than it calls for. If it calls for a 2 amp fuse, try a 2.5 amp fuse. If it still blows, try a 3. if it still blows, you may have a short in the power output section of your amp. I don't normally recommend that higher fuse ratings should be used, but that is what I would do if I was working on it. You may find other issues besides the power transformer. If you have voltage going into (the primary) and no voltage on the secondary at all, then you might have a transformer that has a thermal cutoff unit that is hooked up in series with the primary windings protecting the transformer from over heating. This has been known to happen, and can be easily repaired, if you have the right tools, a soldering iron, and a lot of patience. I can walk you through it.

Q: Transformer is the transmission of electrical equipment: Transformer is the power of the transmission of electrical equipment, it is the primary energy transformer through the electromagnetic coupling, to the secondary side, we need to become the voltage and current, the frequency does not change the power supply.

Q: If it is powered by a DC source, will there be a Back EMF generated? Why/Why Not?Obviously, there will be a higher current flowing than that of a AC supplied transformer, but I don't know why.Thanks.: Direct current (DC) is not transformed, as DC does not vary its magnetic fields

Q: 1.Transformers are normally used to step up or step down alternating voltage or current. May dc also be used to step up or step down voltage or current? Motivate your answer?2.The supply voltage of a step down transformer is 240 volts and the winding ratio is 4,8 : 1. If there are 2000 turns on the primary winding calculate:2.1) The number of turns on the secondary2.2) The primary current when the secondary current is 15 A3. Calculate the secondary voltage of a transformer with supply voltage of 415 volts, the winding ration is 36 : 14.Can an Autotransformer be used to step up pulsating dc current? Motivate your answer.: A transformer works on the precept of induction. The essential coil of the transformer induces a voltage in secondary coil propotional voltage utilized to it. For this to happen there must a various magnetic flux produced with the aid of the primary coil. Due to the fact that U deliver a DC voltage, magnetic flux produced through the pri coil is zero on account that that the frequency of a DC is zero (be aware: The magnetic flux produced is straight propotinal to the applied frequency) as a result a DC voltage can not be stepped up or down but a pulsating DC will also be tried.

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