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: how do i work out the voltage output of the second winding on a transformer if i know the Primary voltage is 35v and the first winding has 355 windings and the second winding has 4500 how do you do this ?thanks: Assuming that the transformer is designed for a primary voltage of 35 or more, then you can simply multiply the applied primary voltage (up to the design limit) by the turns ratio and this will give you the output voltage. In this case: output voltage 35 x 4500/355 444.

Q: Which transformers belong to special transformers: These special-purpose transformers are known as special transformers. Because of the working conditions and load conditions of these transformers, they can not be calculated by the general transformer calculation method.

Q: Does anyone know where I can buy Transformers in Bluray? I have looked for it everywhere and can't find it and I need it for a Christmas gift.Thanks!: Paramount does not make Blu-ray. Sorry! They chose to go with only HD back in August.

Q: 800kw motor how much transformer: Transformer power factor is generally 0.8 (also 0.7), then the total power transformer = 800 / 0.8 = 1000KW. According to the "Power Engineering Design Manual", the transformer capacity, for a simple load of a single transformer, the load rate is generally about 85%, so the above example, the transformer capacity = 1000/85% = 1176KVA, select 1176KVA above capacity transformer. If it is a single motor, due to the starting current, even if the measures taken, but also increase the corresponding transformer capacity. If the three-phase imbalance, but also a corresponding increase in transformer capacity.

Q: (1) A Step Up transformer steps up voltage.(2) Voltage is directly proportional to Power.Conclusion: A Step Up transformer has the capacity to increase Power.Contradiction: By First Law of Thermodynamics, Energy can neither be created nor be destroyed. Hence No one can create energy out of thin air like, that of by just using a Step Up transformer to increase voltage and hence power.Where is the whole theory wrong?: P I*V A step up transformer DOES increase output voltage BUT it also lowers output current. So it's incorrect to say that Voltage is directly proportional to Power. Voltage is Power divided by the Current. If the output voltage doubles, output current drops by a factor of 2. This way, total output power stays the same as input power, and all laws of Thermodynamics are satisfied. P_in I_in * V_in I_out * V_out P_out

Q: 50KVA transformer each phase current maximum band: Normal current does not exceed 72A per phase current. Of course, in the event of an accident or to strengthen the transformer cooling can be short-term overload operation.

Q: Here's photos of the transformer in question. My dad pulled it put of some electronic he can't remember what and has had it sitting on the garage. Recently I've been working with high voltage and he pulled this out for me to work with just having trouble figuring it out: First of all, never assume anything! There are some standard colour codes for transformer wiring, but not all transformers conform to the standards. In practice, a manufacturer can use any colour wire for any purpose, leaving you and me and a lot of other people wondering for all time, which wire is which? The measured DC resistance does not tell you anything about the AC voltage rating of any winding. With most power transformers, if there are two solid-black wires, they are the primary. If it is tapped, or there are two primaries (such as in dual-voltage units), there will be three or more primary wires (and possibly as many as 8!). I think the side with 115V on it is probably -- mind you, this is not for certain -- nothing more than the side on which that number happened to be stamped. So of course you want to know what to do next. Considering the number of wires and the ways in which they are connected, it would seem that an experimental method will be required. The 2006 ARRL Amateur Radio Handbook (and possibly other editions) tells how to figure out what's what with transformers. I strongly recommend using the procedures described therein.

Q: I need to make a small transformer (that uses AC obviously) that would boost an input voltage of 20-30 millivolts at 1.5 mA to a output voltage of 1 volt (with a current that would obviously be very small) How must I design and build the transformer to accomplish this? Thank you.: Transformers follow Ohm's Law and multiply or divide voltages based on the number of turns making each coil. You need only ensure your two coils have the appropriate number of windings. As for actual numbers for the windings, 1.5mA is an absolutely tiny amount of current, so you have considerable flexibility in this. If you are looking to build a transformer, you should look up the information on what you're planning to use for a core, to be able to calculate the voltage across the secondary coil.

Q: What is the rated current of the 80KVA transformer?: Rated current calculation of transformer Primary side approximation 0.058 * KVA (transformer capacity, size 10kV / 0.4kV) Secondary side approximation 1.44 * KVA (transformer capacity, size 10kV / 0.4kV) Known transformer capacity, and its voltage level side rated current Formula a: Capacity divided by the voltage value, the business by six divided by ten. Description: Applies to any voltage level. Unit KV 80KVA transformer low voltage rated current is: 80 * 1.44 = 115.2A

Q: i have an epcos 565-2 transformer and i want to know how much it will raise the electrical output of a standard 1.5 volt battery. i really do not know much about transformers, but i bought a motor, assuming that i would be able to do fun things with it, and i hooked it up to all the power i could(solar batteries, and numerous amounts of AA batteries) but it wouldn't spin anything that i attached to it more than probably 60 rpm. i bought a transformer to boost the power, and spin the motor much faster. the motor is graded for 3000 rpm maximum, but i just want it to be above 250. any help would be appreciated.: Transformers will only work with AC, not the DC from a battery. You will have to buy/build an inverter circuit to convert the 1.5 V to anything higher with a transformer (the transformer may become part of the inverter if it is the right kind). The other thing to think about is the power level. A 1.5 v AA battery is good for this much power: 1.5 volts * 1 Amp 1.5 Watts You might get 2 Watts out of it for a few minutes, but it can only sustain 1.5 to 2 Watts for about an hour. How much power is the motor rated for? If the motor is rated for 10 Watts, then 1, 2, 3, or even 4 AA batteries will not be enough to power the motor much above 250 RPM. There is still alot you need to know. Just for fun try a bunch of D cells in series (about 10 of them) The extra current provided by the D cells may spin the motor faster. .

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