
The S13 10KV Low Loss No-Excitation Tap-Changing Power Transformer is a specialized transformer designed for medium to high-voltage power distribution networks. This transformer series is notable for its efficiency and functional adaptability, making it well-suited for a variety of electrical infrastructure applications.
Product Description
The S13 type is developed by our company on the basis of S11 distribution transformers through the research and application of new materials and new processes, and the combination of independent innovation and technology introduction. Through the optimized and innovative design of the core and coil structure, the goal of reducing no-load loss and noise is achieved. Compared with the current national standard JB/T10088-2004, the noise level has dropped by an average of 20%.
Product features
1.The transformer core is laminated with imported cold-rolled silicon steel sheets, which greatly reduces the no-load loss and no-load current.
2.High and low voltage windings are made of oxygen-free copper, and low voltage windings adopt double-layer cylindrical structure. high voltage winding adopts multilayer cylindrical structure. 1000kVA and above can adopt foil winding. The product has strong short-circuit resistance.
The transformer connection group uses Dyn11 to reduce the impact of harmonics on the power grid and improve the quality of power supply.
4.The transformer is a fully sealed structure, which prolongs the service life, does not require hanging cores and maintenance.
5.The measured noise value is lower than the standard. After this series of transformers have been transported normally, the relevant parts can be installed without core inspection, and they can be put into operation once the acceptance test is qualified.


Oil Immersed power transformer application

Packaging and Transportation
The transformers was send to sea port by truck, it was transported with oil in the tank, the accessories such as radiators are packed in plywood boxes and the transformer body was nude in the ship, we also equipped impact recorder for the transformer.




Our certificates
YAWEI Transformer is a UL/CUL/CSA certificated transformer manufacturer.



After-Sales Service
1.Our company provides you with project design and process design, and designs and manufactures products according to your equipment purchase plan and specific needs. And train technical and operating personnel for you.
2.The newly purchased products are provided with online assistance for installation and debugging. The products are under the lifelong service system. If problems occur in normal use, we will provide solutions within one working day after receiving user's feedback. We will try our best to get the product up and running as soon as possible. And there are regular visits by professional technicians to ensure the long-term, safe and reliable use of our products.
3.We use quality authentic materials, process and manufacture in strict compliance with ISO9001:2000 international quality management to ensure the quality of excellence and the smooth installation!
YAWEI promises each one of our delivered power transformer has passed the most strictly test and we remained 0 fault rate record for more than 10 years so far, our oil immersed power transformer is designed in accordance with IEC, ANSI and other major international standards.We aim to be your reliable business partner!
Quality Standards Of Product

1.Quality management system GB/T 19001-2016 ISO 9001: 2015
The operation of the whole YAWEI system is strictly controlled and managed. This ensures the quality of products and material in all stages, from receiving customer requests to design, materials, production, installation, testing, packaging, delivery, after-sales, all of which operate under strict and logically linked processes.
2.CERTIFICATEOFCOMPLIANCE of UL and CUL
YaWei pad mounted transformer have been evaluated by UL in accordance with the U.S and Canada Standard(s). Our transformer certified by UL based on Canadian standards (CSA standards) .
3.Accreditation certificate CE
Standard: EN 60076-1:2011.EN 60076-2:2011EN 60076-14:2013 confirms that YAWEI technical quality meets the requirements of all specific international standards for testing and calibration laboratories. All YAWEI products are fully tested in a qualified testing room before leaving the factory, ensuring stable quality and providing absolute peace of mind for customers.
|
Rated Capacity |
Voltage Combined |
Vector-group |
No-load Loss |
120 °C Loss |
No-load |
Short-circuit Impendance |
||
|
HV |
Tapping Ranges |
LV |
||||||
|
630 |
35 |
±5% |
3.15 |
Yd11 |
830 |
7870 |
1.10 |
6.5 |
|
800 |
980 |
9410 |
1.00 |
|||||
|
1000 |
1150 |
11540 |
1.00 |
|||||
|
1250 |
1410 |
13940 |
0.90 |
|||||
|
1600 |
1700 |
16670 |
0.80 |
|||||
|
2000 |
2180 |
18380 |
0.70 |
|||||
|
2500 |
2560 |
19670 |
0.60 |
|||||
|
3150 |
35-38.5 |
± 5% |
3.15 |
3040 |
23090 |
0.56 |
7.0 |
|
|
4000 |
3620 |
27360 |
0.56 |
|||||
|
5000 |
4320 |
31380 |
0.48 |
|||||
|
6300 |
5250 |
35060 |
0.48 |
7.5 |
||||
|
8000 |
35-38.5 |
± 2 x 2.5% |
3.15 |
Ynd11 |
7200 |
38480 |
0.42 |
|
|
10000 |
8700 |
45320 |
0.42 |
|||||
|
12500 |
10080 |
53870 |
0.40 |
8.0 |
||||
|
16000 |
12160 |
65840 |
0.40 |
|||||
|
20000 |
14400 |
79520 |
0.40 |
|||||
|
25000 |
17020 |
94050 |
0.32 |
|||||
|
31500 |
20220 |
112860 |
0.32 |
|||||
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