40MVA/20kV split auxiliary transformer for factory

Ref Price:

Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 pc

Supply Capability:: 1 pc/month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Quick Details

Place of Origin:	HeBei	Brand Name:	CNBM	Model Number:
Usage:	Power	Phase:		Coil Structure:	Toroidal
Coil Number:	3 Winding	Capacity:		Rated Voltage:	40MVA/20kV
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 40MVA/20kV split auxiliary transformer, 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 200-490 tons, and due to the restricted transport conditions, the transportation becomes the critical issue for application of the 40MVA/20kV split auxiliary 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 40MVA/20kV split auxiliary 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: Parallel can provide the total capacity is not the sum of the capacity of the two transformers, or how to calculate? What is the principle of allocation of load load, that is, how to allocate two transformer load capacity?: If the transformer voltage ratio is equal (equivalent to the equivalent of the induced potential), the impedance voltage (equivalent to the transformer internal resistance) are equal, then they output the current is equal, that is, the load is evenly distributed. The total capacity is the sum of their capacity. Otherwise, the impedance of the output voltage of the small current, its load rate is relatively high, when its load current reaches full load, the impedance voltage has not reached a full load, if the load at this time for the total Capacity, then the total capacity is less than the sum of the two capacity. This is a strict argument. In fact, the two transformers of the impedance voltage difference is very small, the load distribution is also very small difference, in addition, the so-called transformer is a little overload, nor is it so strict, so the actual total capacity and the difference between the two capacity Not big. In order to prevent the load distribution is too uneven, the capacity of these two transformers should be as close as possible, should not exceed 3: 1, because the capacity of the large impedance voltage is small, it has reached full load, and that small capacity is still in the owe Load, its role is not fully play out, it is not the significance of the parallel. The above is the answer 2009-10-8 02:31. At the end of the said, "the large capacity of the impedance voltage is small, it has reached full load, and that small capacity is still in the obvious underload, its role is not fully play out", wrong, apologize. Should be large capacity transformer impedance voltage, and small capacity impedance voltage is small, the load rate is high, the output current to reach full load, resulting in a larger capacity of the transformer can not put its big capacity advantage fully play out, this is Very unfavorable.

Q: i heard that there is a new transformers out and i do not know if it is good,so can you help?: I liked it, but it definitely could have been better. The first one was a LOT better, but if you liked the first one, you will like this one. It was an action movie, for sure. And it was funny. It was good, but not super great.

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?: If it is a mains transformer, then the primary and secondary windings will be on separate bobbin sections with an insulator between them. The higher resistance winding will be the primary (mains) winding, as it has more turns than the secondary and is made of thinner wire. (Resistance tests on a transformer are not generally very informative as most meters measure only the DC resistance, and transformers behave quite differently when supplied with AC.) The easiest way to find out what comes out of the secondary winding, is to apply power to the primary. That will give you the off-load voltage. To find out how much current you can safely draw, you will need to measure the temperature of the transformer under load. It's safe if it isn't too hot to touch the laminations (at the furthest point away from the mains terminals, obviously) with your bare hands.

Q: Rectifier and rectifier transformer: 1) rectifier transformer is the rectifier device power transformer. Rectifier equipment is characterized by the original input current, and vice president through the rectifier output after the original DC. Converter is rectifier, countercurrent and frequency conversion of the three working methods in general, rectification is one of the most widely used. Transformer used as rectifier power supply is called rectifier transformer. Industrial rectifier DC power supply is mostly by the AC power grid through the rectifier transformer and rectifier equipment and get. The application of rectification change the most chemical industry. Simply talk about the industrial high-power DC power supply. Civil rectifier transformers are commonly referred to as power adapters, transformers, power converters. 2) rectifier (English: rectifier) ??is the exchange of alternating current into direct current devices, can be used for power supply devices and detect radio signals. Rectifier can be vacuum tube, ignition tube, semiconductor diodes, SCR, mercury arc and so on. Generally do not contain voltage transformers. Refers to a wider range. Basically most of the electronic products are in use. 3) folk often put the ballast as "rectifier", inductance ballast is a core inductance coil, rectifier is a rectifier device.

Q: How many transformers games are for the xbox360 and what ones are based on the old tv show? And what ones are based on the movies? Please give complete names and in order! Thank you (:: Movie: Transformers: The Game (2007) Transformers: Revenge of the Fallen (2009) Transformers: Dark of the Moon (2011) Non-Movie: Transformers: War for Cybertron (2010)

Q: 440 kv(Primary side) and then at the receving station its step down from 440kv(primary side of the step down transformer) 33 kv.in the tranmission line,between both the primary side of the transformers the voltage is 440kv.then how the power flows in tranmission lines?: A transformer can handle power flow in either direction. The primary may be either the LV or the HV side of the transformer, likewise the secondary. By convention the primary is the side where the power flow enters the transformer and the secondary is the side where it leaves. It is NOT that the HV side is always termed primary!! In this case the generating transformer (at the generator) has a 33kV primary and 440kV secondary. This is often called a step-up transformer. The power flows from the generator through the generator transformer and into the line. It then flows along the line to the second transformer at the receiving substation. Here the HV side is primary and the LV side secondary (in other words, as you mention, it is a step-down transformer). The power is flows through this transformer and out into the further circuits. The power is (substantially) preserved at each transformation by the transformed current levels being inversely proportional to the transformed voltage levels so that V x I constant. Although nominally the voltage at each end of the line is 440kV there may (or may not) be a small difference in the voltage magnitude and there will certainly be a phase difference. If the voltage magnitudes at each end are v1 and v2 respectively and the angle between v1 and v2 is A, then the power transmitted is (v1.v2 sinA)/X where X is the impedance of the intervening line

Q: Do you really think Transformer 2 is any better than Paul Zart Mall Cop? Not that Mall Cop was a good movie. Transformer 2 just went on and on, boring, boring.: transformers 2

Q: I have 2 flyback transformers one is from an old TV and the other one is from an monitor (new).I need to know the negative pin for the HV (high voltage)and the pins from the primary coil (input) and primary coil polarity. Can you tell me a method to find out these things? Thank you: reference 1: The flyback circuit diagram calls for two sets of coils: a primary coil and a feedback coil. The turn ratio is really not that critical so usually ANY two coils in the flyback primary will work. Locate two sets of coils on the horse-shoe-like configured pins by testing the flyback pins for continuity. Often times there are more than two pins connected to a single coil in the transformer. You will need to try the different positions to see which configuration works better for your application. After you have located two independent sets of coils on your flyback, hook them up to the circuit with any polarity. If you turn on the power any you don't hear a whine or hum, try reversing the polarity (switch the leads) of ONE of the coils. If nothing now, reverse the polarity of the other coil. If nothing now, reverse the polarity on the first one you switched again. So the take home message is trial and error. Flybacks can be very picky as to coil polarity because some of them have a rectifier built in them. So try each configuration (8 of them with two sets of coils) until it whines (Occasionally I'll find one that doesn't wine but VERY rarely). Any two sets of coils in a potted flyback should work, so don't try new coils until you're sure you've exhausted all possible combinations. The high voltage will come out of the fat wire from the top of the flyback-usually connected to the CRT with a suction cup. You will not be able to locate the high voltage return pin with a multimeter. The only way to do it is to bring the high voltage line down to the pins and whichever one it arcs like mad to is the one yer looking for. Try to stay away from arcing to any of the pins used for coils. High voltage is not so good for your transistor or power supply. second reference has a lot of useful info plus photos. . .

Q: How is the insulation of the transformer divided?: n the oil-immersed transformers, the main insulation to oil-paper barrier insulation structure is most commonly used. The longitudinal insulation is the insulation between the parts of the same winding, such as insulation between different windings, between layers and turns.

Q: What is the transformer absorption ratio (R60 / R15): Absorption ratio = R60 〃 / R15 〃 For the same insulating material: the moisture or defective absorption curve will change, so you can determine the insulation curve based on the insulation is good or bad, usually in megger in 15 seconds and 60 seconds of the insulation resistance ratio (This is the absorption ratio, expressed by the K value), because the insulation of the degree of moisture increases, the leakage current increase than the increase in the starting value of the absorption current is much more, expressed in the insulation resistance is: megger in 15 seconds and 60 seconds of the insulation resistance is basically equal, so the K value is close to 1; when the insulating medium is dry, because the leakage current is small, the current absorption is relatively large, so the K value is greater than 1. Experience: When the K value is greater than 1.3, the insulating medium is dry, so that by measuring the absorption ratio of the insulating medium, it is possible to determine whether the insulating medium is damped and K is a ratio which eliminates the geometric dimensions of the insulating structure , And it is the same temperature measured under the value, without going through the temperature conversion, the comparison of measurement results is very convenient.

Send your message to us

*Email

*TEL

*Quantity

*Unit