720MVA/550kV 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:	720MVA/550kV
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 720MVA/550kV main 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 the 720MVA/550kV 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 the 720MVA/550kV 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: Does anyone know the storyline to Transformers 2? A release date would also be great.: Sam Witwicky discovers something about the origins of the Transformers and their history on Earth. The evil Decepticons need to capture him for information. The climactic battle takes place at the Giza pyramid complex, where a temple is located within. Lorenzo di Bonaventura explained the film will show the Transformers who visited Egypt before the pyramids were built, and all our heroes end up here because of the Decepticons' masterplan. Furthermore, Egyptian hieroglyphs resembling helicopters and other present day vehicles in real life will be explained in the film as being depictions of those ancient Cybertronians who visited Earth. The release is set to be June 26, 2009

Q: According to your measurements when we have a step-up or a step-down transformer?: A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field through the secondary winding. This varying magnetic field induces a varying electromotive force (EMF) or voltage in the secondary winding. This effect is called mutual induction. If a load is connected to the secondary, an electric current will flow in the secondary winding and electrical energy will be transferred from the primary circuit through the transformer to the load. In an ideal transformer, the induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp), and is given by the ratio of the number of turns in the secondary (Ns) to the number of turns in the primary (Np) as follows:- Ns/Np Vs/Vp ---------------------(i) By appropriate selection of the ratio of turns, a transformer thus allows an alternating current (AC) voltage to be stepped up by making Ns greater than Np, or stepped down by making Ns less than Np.

Q: I have a question can someone explain why transformers get hot in use and why must they not be allowed to get too hot: Of course a transformer must use AC voltage and current. Power consumed is calculated as P EI (volts x current). Even if the transformer is not connected to a load current must pass through the coils of wire. Although the resistance of the wire coils is minimized (where thick copper wire has less resistance) to obtain the needed effect many turns are required and thick wire may not be practical. The transformer will exhibit a heating effect equal to its I2R (current squared x resistance) losses.

Q: What is the main purpose of the transformer?: When a sinusoidal alternating voltage U1 is applied across the primary coil, there is an alternating current I1 in the conductor and an alternating magnetic flux ф1 is generated which forms a closed magnetic path along the core through the primary and secondary windings. The mutual inductance potential U2 is induced in the secondary coil, and ф1 also senses a self-inductance potential E1 on the primary coil. The direction of E1 is opposite to that of the applied voltage U1, which limits the size of I1. In order to maintain the existence of magnetic flux ф1 need to have a certain power consumption, and the transformer itself has a certain loss, although the secondary load is not conne

Q: Can the transformer be replaced with a component?: Transformers are not only able to buck and boost, but also from the role of isolation. In fact, the circuit with the inductance of the circuit can also buck and boost, but there is no isolation of the role, there will be dangerous to use. Resistance can also buck, but the efficiency is low, the current is small, there is no isolation effect.

Q: i want to know the actual lyrics for the Transformers theme that was re-covered by Mute Math. i heard that they changed some of the lyrics but i would like to know the exact changes, thanks.: Whoa she just gave you the best answer!!

Q: 100kVA transformer can withstand much of the current? What is its formula?: Three-phase transformer: rated capacity S = √3 * rated voltage U (line voltage) * rated current I (line current) On the subject: S = 100KVA High pressure U1 = 10 KV I1 = S / (√3 * U1) = 5.77 A Low pressure U2 = 0.4 KV I2 = S / (√3 * U2) = 144.34 A

Q: I personally thought transformers was worse but very similar to the avengers.: They're both excellent movies - 10/10 but I prefer Transformers. I even find the Transformers games more fun than the Marvel (Superhero) games edit: I also agree with Uxielixe, the music is great. I learned a lot of Transformers music on piano and electric guitar.simply beautiful and I love Iron man in The Avengers.

Q: I have a power transformer and i forget where it came from. It has two leads from a wall outlet plug and then goes to the main (square) casing. there are three wires that come out the other side. They are from left to right, red,white and red. I assume its a 9v ac to dc transformer but am not positive. Can someone help me? I suspect that the white wire is ground. Any help would be great.: There's no reason to assume anything, except that the primary side (with the line cord and plug) is probably intended for 115 Volts, AC. If it's a transformer (rather than a power supply) it's not AC to DC at any voltage. Transformers convert AC to AC. With those colors on the secondary, there's a pretty good chance it's center-tapped. Red-to-red will be twice the voltage of either red-to-white. Nothing should be grounded to the transformer case.

Q: can the amps rate be increased by using transformer from 10amps to 120amps.: If you mean a 10 amp transformer, I hope you like the smell of burning insulation. However, you could re-wind the transformer to use one twelfth the number of secondary turns, using wire with twelve times the cross sectional area.

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