25MVA/110kV railway balance traction transformer

Ref Price:
Loading Port:
Payment Terms:
Min Order Qty:
1 pc
Supply Capability:
1 pc/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:


Quick Details

Place of Origin: HeBeiBrand Name:


Model Number:






Coil Structure:


Coil Number:

3 Winding

Capacity: Rated Voltage:


Connection Symbol:

YNd11 Dyn11 YNyn0d11


Cover type or Bell type


MR or ABB or SMS

Packaging & Delivery

Packaging Detail:Mainbody --naked Disassembled parts -- crate
Delivery Detail:3 months



1. CESI certificate
2. High short-circuit withstand
3. Low loss, PD and noise
4. CTQC certificate
5. No leakage




The application of the 25MVA/110kV railway balance traction 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 470-490 tons, and due to the restricted transport conditions, the transportation becomes the critical issue for application of the 25MVA/110kV railway balance traction 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 25MVA/110kV railway balance traction 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.


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:Is the upper oil temperature of the transformer high or lower?
Of course, the upper oil temperature is high ah, the liquid convection effect ah.
Q:110kv level, the capacity of about 43MVA transformer models and detailed parameters
SSZ10-50000 / 110 ONAN YN, yno, d11 110 ± 8 × 1.25% / 38.5 ± 2 × 2.5% / 10.5 Rated current (A) High pressure side 262.4 / Medium pressure side 749.8 / Low pressure side 2749.3 The following are the same as the " No load loss 35.3kw The following are the same as the " No-load current 0.09% The following are the same as the " Short circuit loss (kW) High - Medium 200.8, High - Low 202, Medium - Low 157 The following are the same as the " Short Circuit Impedance (%) High - Medium 10.06, High - Low 17.78, Medium - Low 6.35.
Q:grounding transformers?
an earth ground is made at the transformers sub-station. This is made by driving a copper rod (uffer?)deep into the earth,the depth set by the size of said transformer.A portion of the (uffer?)or ground rod is left exposed and a ground wire/strap is attached to it
Q:why cant a transformer work in dc?
Transformers do not work with direct current (DC), where the current constantly flows in the same direction.
Q:Physics: What is the function of a transformer?
This Site Might Help You. RE: Physics: What is the function of a transformer? 1.) What is the function of a transformer? a.) It is a device that can change the voltage of an AC supply. b.) It can change a low voltage supply into a high voltage supply or vice versa. c.) It is a device used mainly to change AC into DC. d.) A and B are correct. 2.) What is the function
Q:What is the difference between the inverter and the transformer?
★ 1, [inverter]: inverter can change the frequency, [also change the voltage accordingly]. Because, inductive (such as motor) load, in the frequency down, the sense of resistance is also reduced, in order to prevent the current exceeds the rated value, must also reduce the voltage! In the last century just introduced, for the FM, voltage regulator, speed control device is known as the "three V technology" is the reason. - ★ 2, [Transformer]: As the name suggests, the transformer is to change the voltage of the device. Transformers are typically used at specific frequencies (eg, frequency, or high frequency). As the voltage used to change, the frequency is constant, which is its salient features.
Q:Know the rated capacity of the transformer, how to calculate its rated current?
Low-voltage 400V distribution transformer speed calculation: per thousand volts by 1.44A, per thousand kVA of 144 ac current calculation. Formula algorithm: Three-phase transformer current I = Pe / Ue / √3 Single phase transformer current I = Pe / Ue
Q:Power is generated at genaration station with 33kv,then by using step up transformer the voltage raises to?
I think you will find that the primary side of the transformer is not necessarly the input side. So the 33kv is the input voltage connected to the secondary. The 440kv is the output from the primary, and the input to the second transformer. In both cases it is connected to the primary of the transformer but one transformer is used in reverse.
Q:Confused with transformer.?
It looks like you MAY have an auto-transformer, ie only one winding. Off hand, I would say the white is supply live and blue the common return. If you measure the DC resistance of White to all the others and record reading. Then red to all others as above and same with brown, yellow and blue. The pair with highest reading Should be the primary, it doesn't really matter which is live or neutral, as long as you take the return of the secondary to the neutral. The other 3 wires will give you 3 different voltages with respect to neutral, however the EHT in the serial No. May indicate Extra High Voltage, which is not 220v. by any stretch of the imagination. Is there no information whatsoever on the transformer itself? Clear as MUD I know, but I'm not good at explaining things. Your meter should be at the lowest range, as this is DC resistance you are measuring, not AC.
Q:short-circuit and open circuit transformer question?
read material regarding transformers Not just once but say 5 times, till you understand what is said. the transformer has copper loss due resistance of primary and secondary. It has additionally iron loss. The equivalent circuit is a sort of representation that brings in these losses. generally you can apply a low voltage to primary till shorted secondary has a current equal to less than rated current. These measurement details are given. Similarly open circuit measurement details are available. With understanding of how the rest can be calculated using worked examples in texts, you can solve it yourself. attempt this See Lee's book on transformers or schaums series on electrical engg.

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range