400MVA/230kV power transformer exported to USA

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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:	Three	Coil Structure:	Toroidal
Coil Number:	3 Winding	Capacity:	50000 63000 80000 100000 120000 180000	Rated Voltage:	400MVA/230kV
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 the 400MVA/230kV power 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 400MVA/230kV power 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 400MVA/230kV power 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.

Q: if the transformer converts 240v ac to 8V ac, ratio 30:1 then it should step up the voltage by the same ratio, i.e, 15V ac to 450v ac.but it's not the case !!: no, transformers work in reverse only as long as the voltages don't exceed those in the spec. And only as long as the power does not exceed that of the original. In this case you are applying 15 volts to a winding made for 8 volts, and expecting 450 volts on a winding made for 240 volts. Won't work. You should check the current levels also, as I suspect your load is larger than the transformer is designed for also. .

Q: For a project, I need a sine wave with an RMS amplitude of 1000 V at least.I have a function generator that only makes sine waves at most of 7 V RMS.I have a neon transformer w/ a 120 V primary and a 3,300 V secondary and a step down transformer w/ a 120 V primary and 16 V secondary, which is used backwards.Well, I can only get 585 V max. I decided to get some low power step down transformers (Hammond Mfg. 162 series) w/ dual primary and secondary windings. so I can try different combination of step up.I thought the smaller the core would be less of a load for the generator. I get 30 V out of the HVAC tran. (10 VA rating) when the big transformer is hooked up, but for a Hammond w/ a similar winding ratio and (1.1 VA) w/ a similar winding ratio, but I can only get like very little out of the big transformer when hooked up.Is there another factor. I read something about transformer impedance, I was thinking of doing a quick measurement of that on them.: You are confusing VA (power ratings) with transformer ratios 120/16 7.5 :1 3300/120 27.5 : 1 So connect 7Vrms to 16 input to give output 1 52.5V Now connect this 120 (52.5V) output to the 120V input of the 120/3300 transformer The output should be approx 52.5 x 27.5 1444 Volts Use the 16/120 to step up and then the 120/3300 to step up again Take the function generator voltage to its lowest and measure at all points now gradually increase the generator voltage measuring at all points until you get what you want If the voltages are not as you expect then the VA ratings may be a problem Remember to be extra careful with High Voltages

Q: Any help much appreciated here, I cannot understand the following formulas at all. If there is anyone who can please explain in very SIMPLE words I would be very grateful. My exam is next week and I am still stumped on the following.VP/VS NP/NS IS/IP ok this bit I understand, but then here are the QAs that don't make sense to me:Q1) A single phase transformer has 1250 primary turns and 200 secondary turns. Primary V I are 230V and 3A. What are the secondary V I?A) 1250/200 230/vs transpose too: VS 200 X 230/1250 36.8V Why has it been turned upside down?230/36.8 Is/3transpose too: Is 3 X 230/36.8 18.75A Why??The following Q I am even more stuck withQ2) Single phase transformer has a rating of 300/230V, 15KVA. What is the full load of primary and secondary?A)S VI Where did S come from?!Ip 1500/3300 4.55A KVA - is this taken as the V? Not I? Is that why Is 1500/230 65.22A it has been reversed? I'm very confused, please can someone help explain this process to me?: Transformer Formulas

Q: I have some questions about some of the transformer toys1)Why is it that the stores never put out some of the action figures I'm looking for like Ironhide and Starscream2) Why am I seeing a bunch of voyager class Ratchets and deluxe class autobot wheelie on shelves in every store i go to that sells transformers stuff3) Why do stores put on there shelves either a bunch of leader class optimus primes, or a bunch of leader class megatron and there's barely any jetfires 4)where do you think is the best place to buy transformer figures, toy R us, walmart, target, ETC, but don't say internet5) this last one is just your opinion and its what do u think is the worst figure you have or is in your collection and tell me why, for me its voyager class the fallen, because getting him was really hard and he's not even worth being that rare.So those are my questions, i hope you can answer them all and thanks: Sorry Koda you're incorrect! they do no longer remodel into robotic, regrettably. the only one that combine and have a robotic and alt mode are the legend figures as for now and overload will join the mixture interior the legend mixture. desire it enables. P.S.- the image of the hyperlink is the ideally suited classification that fee $a hundred

Q: Why is the transformer coil insulation?: Insulation grade refers to the heat resistance of the insulation material used, divided into A, E, B, F, H grade. Allowable temperature rise is the limit of the temperature of the motor compared to the ambient temperature. Insulation temperature Class A Class E Class B Class F Class H Maximum allowable temperature (° C) 105 120 130 155 180 Winding temperature limit (K) 60 75 80 100 125 Performance reference temperature (° C) 80 95 100 120 145 Generators and other electrical equipment, the insulation material is the most weak link. Insulation material is particularly susceptible to high temperature and accelerated aging and damage. Different insulation materials have different heat resistance, the use of different insulation materials, electrical equipment, the ability to withstand high temperatures are different. So the general electrical equipment is specified in the maximum temperature of its work. According to the different insulation materials to withstand the high temperature of its ability to set the maximum allowable temperature of seven, according to the temperature size were: Y, A, E, B, F, H and C. Their allowable operating temperatures are: 90,105,120,130,155,180 and 180 ℃ above. Therefore, Class B insulation indicates that the insulation temperature of the generator used is 130 ° C. The user should ensure that the generator insulation does not exceed the temperature during operation of the generator to ensure proper operation of the generator. Insulation class for the B-class insulation material, mainly by the mica, asbestos, glass fiber by the organic glue or impregnated from. Commonly used B-class insulation materials are PVC glass fiber casing (yellow wax tube), 6520 composite paper, DMD insulation paper.

Q: A transformer is used to step down a voltage of 11KV to 220V. Given that the transformer has 3200 turns in the primary, calculate the number of turns in the secondary coil.Another transformer is used to further to step down 220V to 110V. its input current is 3A and the output current is 5.6A. Calculate its efficiency: Transformers work at constant voltage/turn ratio, so : V1/n1 V2/n2 n2 n1*V2/V1 3200/11000*220 64.0 turns Eff.cy 100*5.6/6.0 93%

Q: I have a nice little 120VAC to 7.5KV transformer that used to call an air purifier its home, but I'm not sure how to wire it. I have some guesses, but I want to make sure I don't burn down my house so I am hoping to verify them with the help of the yahoo answers community.: Do you have a volt/ohm meter? If you do, with the transformer unplugged from any AC source, take the ohm meter and measure the amount of resistance in the black/white AC input leads; then see if there's continuity between those wires and the long white wire coming off the same side of the transformer as the AC input leads. Then take the ohm meter and measure the resistance between the single output lead and the green wire. Also check to see if there is a meter reading between the output lead and the AC input wires. If there's readings between all transformer wires, you probable have what is called an Auto-transformer. The output is tapped from one secondary winding common to both AC input and HV output. Did you take the manufacture name and model number off the transformer and do an Internet search to see if there might be an online circuit diagram? ------------------ If all else fails, make sure that all the wires from the transformer are not accidentally touching or anything and that they are situated well apart from one another, then hook up AC voltage into the transformer. Don't attempt to measure any voltages with your meter. Most likely it will not read voltage that high. Be very careful, the voltages on that transformer can HURT YOU seriously. Do not fool with the transformer leads with AC voltage applied to it. Plug in the AC voltage and observe the transformer. If nothing starts popping and smoking, it probably functining alright. Unplug the AC from the transformer. Even if the transformer was defective and shorted out internally, all it would do is cause a circuit breaker in your house to kick off. Simple matter of disconnecting the AC from the transformer and then reseting the circuit breaker. Be careful. That thing isn't a toy, and if you don't understand what your doing, that thing will hurt you or worse.

Q: How many different types of transformers are there if anyone can remember from the cartoons?: Gosh, there are quite a lot between the Autobots to the Decepticons but I haven't watched the toon in so long. But I have a few toys from the 80s including a G1 Optimus Prime from 1988. I just found it at my mom's house over the weekend. Boy did that bring back memories. I'm surprised I still had it considering we moved so much.

Q: Transformer Uk = 4.5% What does it mean?: Uk represents the transformer impedance voltage, refers to the transformer short-circuit impedance voltage. The impedance of the transformer (now the standard is called: "short-circuit impedance") standard value with a percentage (per unit value) to represent. General small distribution transformer standard value of 4% or 4.5%.

Q: a lamp is connected to a secondary coil ( 80 turns) of a transformer by long leads which have a resistance of 2.5 ohms. Primary coil( 1600 turns voltage is 220v). the power input to the primary coil is 44w. 1) what is the voltage across the secondary coil2) what is the current across the secondary coil3) what is the electrical power dissipated in the lamp: Assuming perfect transformer. turns ratio 1600/80 20:1 secondary voltage is 220/20 11 volts primary current is 44/220 0.2 amps secondary current is 0.2 x 20 4 amps drop across wires is 4 x 2.5 10 volts. This assumes the 2.5 ohm number is for both leads, not each. voltage across lamp is 11v – 10v 1 volt power in lamp is 1 v x 4 a 4 watts. .

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