250MVA/242kV three phase combined shell type transformer for hydro power station

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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:		Capacity:		Rated Voltage:	250MVA/242kV
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 250MVA/242kV three phase combined shell type transformer for hydro power station.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 the 250MVA/242kV three phase combined shell type transformer for hydro power station. 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 the 250MVA/242kV three phase combined shell type transformer for hydro power station, 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:I have a transformer which I got from a alarm system and wondered if I can use it in conjunction with my newly purchased bread board.I don't know how I would tell what the transformer is, I'm assuming the input is 230v (UK) but the output I'm not sure. The resistances of the windings are 0.7 ohms and 74 ohms. I'm assuming the output will be around 23V? Also, if I was to use this, which winding would the mains connect to, the lower resistance or higher resistance?: Not okorder

Q:A small transformer used in a foundry has 550 primary turns and 20 secondary turns. Initially, the switch on the secondary side of the transformer is open, so there is no connection between the two ends of secondary coil.(a) What is the voltage difference between the two ends of the secondary coil, Vs, if a direct current potential of Vp 120 V is placed across the primary coil? (That is, the frequency of oscillation on the primary is zero.) (b) What is the voltage difference between the two ends of the secondary coil, Vs if Vp is 120 V and the frequency of oscillation on the primary is 60Hz? (c) Now equipment powered by the transformer is put into use and the switch is closed. A resistance of 14 Ω is placed between the two ends of the secondary coils. What is the current through the secondary coil? (d) What is the current through the primary side of the coil with the switch closed? Thanks so much!!: A. Zero, since dc current does not have a varying magnetis field. B. 550/120 20/ X 4.3636volts Ne /E p Ns / E s C.4.3636v / 14 .311 a. Es / R t A s D. .011 amp if the transformer is 100% efficient

Q:Hi Guys.I'm a college a student who is wondering which tablet to buy. I really can't decide.I want to have a good tablet that I can type and hand write on it. A Tablet that can play 720p and 1080p mkv files. A Tablet that is good for pdf reading. This is all I want. The problem is these two tablets are really good. The New Ipad is running IOS 5 while Transformer Infinity is running ICS.I haven't had tablet before so I have no experience, please I'm open to any advice.: Lol I am having the same problem I think I might go for the iPad tho because I have heard a lot better reviews for it but it is more money and if it is the keyboard that u really want u can get one that connects over Bluetooth to the I pad

Q:I have a US Navy Plate and Filament Transformer Manufactured by Hudson American Corporation.This monster weighs 14.5lbs, and is in a sealed steel casing.There are 16 unlabeled terminals, and I'm working to identify those.It does however have the current and voltage labelings for the primary and secondaryPrimary : 110/115/120v AC (Since there are 16 taps, I'm guessing that these are separate primaries)Secondary 1:360-0-360 200MA DCSecondary 2: 6.6v 10A CTSecondary 3: 12.6V 3ASecondary 4: 5.25V 3AI'm set on using a solid state rectifier circuit so i don't need the 5.25V Line, or the 12.6V line.Could I somehow do something to get extra current on the B+ line (S1 windings) with these unused secondaries?I want 4x 6550/kt88, so the extra plate current would be great to have around.: Get get right of entry to to an impedence meter and degree what the transformer relatively is (impedience clever). you will discover small transformers with an identical turns ratio and not additionally be near to what you like. If there's a marking on the transformer , you're waiting to seem it up. the different element is that utilising tubes at very low voltages would positioned you into very non linear tiers of operation. the entire thought of utilising a triode or a tetrode amp is for a tube sound and to get low distortion or controled distortion. beginning at 5 to ten% distortion isn't great. i assume you're speaking approximately utilising something like a 3V4 or in all possibility between the tubes designed for listening to aids. Neither replace into designed for finished constancy. Microphonics are a controversy. there are a number of integrated amplifiers that are very low distortion and could no longer require an output transformer.

Q:If the primary circuit of a transformer is connected to a power source and the secondary circuit has a light bulb, will the light bulb turn on and stay on when the power source is turned on? Or will it turn on for a few seconds and then turn off?This question's been bugging me because I think because transformers are usually wired through AC that the bulb would only turn on for a few seconds and then turn off, but then shouldn't current be constantly flowing so it would stay on?Thanks for and clarifications.: Umm, is the power source AC or DC? You are right, transformers usually use AC. Is it not using AC in this example? You didn't say. If it's using AC, the light bulb will stay on. The current actually switches on and off, but so fast you don't see it. Well, normally, for household 60Hz AC power. But who knows with this mystery power source. It could be 1Hz AC. If it's using DC, then it will come on for a short time (a few seconds? I don't know). Yes, current is continually flowing through the primary circuit, but after a while no current will be flowing through the secondary circuit where the light bulb is connected. It takes change in current in the primary circuit to induce a current in the secondary circuit.

Q:I just saw the mythbusters use a neon transformer to spark a methane explosion and the arch looked like a continuous irredecent light. So are neon transformers a part of neon lights? That and if you know, what is the inert gass inside the lights?: Neon transformers are used to step up ordinary low voltages (440V) to a very high value. Obviously the secondary currents are very low of order of a few mA. They have nothing to do with neon lights/signs. Neon lights are the lamps filled with neon gas.

Q:Where is the transformer used?: You ask more general, there are many kinds of transformers, 1 is the power transformer, it is 10,000 volts drop to 380,220 V commonly used low pressure for us to use. Small transformers are 220V voltage reduced to household appliances used when the operating voltage rectified as electrical power. High-frequency transformers are generally used as switching power supply pulse output transformer. High-frequency signal transformer only a few turns of the coil, the transmission of high-frequency signal. Simply say this kind of bar, a wide range of various types of transformers.

Q:Rules for the operation of cooling devices for oil - cooled transformers: C, work or auxiliary cooler failure after removal, should be automatically put into the standby cooler; ?D, strong oil circulation cooling transformer operation, must be put into the cooler, no load and light load should not put too much cooler (no-load state to allow short-term cast). All the load into the corresponding number of coolers should be in accordance with the provisions of the manufacturer, according to the temperature and load switching cooler automatic device should be kept normal.

Q:hi guys can any of you give me advice on wot i need 2do on removing and replacing a faulty line output transformer on a rear veiw projection tv as i have the part and the local tv shop wont fix it 4 me.wot would be the best way to discharge the power from it first and could i jus cut the 2 wires on the old 1 and use connector blocks to connect the new 1 in would this be ok to do or do it need to soilder connected on?. and is there any adjustments that would need to be done to the set when i have it installed be4 i turn it on any help much appreicated: Solder the joints!!!!It is OK to use the old connectors!!!! Be sure that the power of the new transformer it is the same with the power of the old one.

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