Product Description

Our fully sealed distribution transformer excels in delivering reliable performance within 10kV / 0.4kV, 50Hz distribution and transformation systems. Meticulously engineered for versatility, this transformer is ideally suited for residential, commercial buildings, public facilities, industrial and mining enterprises, power generation entities, and urban and rural power grids. Crafted in compliance with the esteemed GB1094 power transformer standard, it promises robustness and efficiency.
Use Condition
The transformer is designed to withstand a maximum ambient temperature of +40 ºC, ensuring optimal performance in diverse environments.
Engineered to operate efficiently down to a minimum ambient temperature of -25 ºC, it ensures adaptability to different climates.
The transformer is suitable for altitudes less than 1000m, making it versatile for a range of locations.
It maintains functionality with a maximum monthly average relative humidity of 90% at 20 ºC, ensuring reliability in various conditions.
Installation location: This transformer is designed for installation both indoors and outdoors in environments free from fire, explosion risks, severe pollution, chemical corrosion, and significant vibration.

Technical data of S11-M 10kV three-phase full seal non excitation voltage regulating distribution transformer
Rated capacity(kVA) |
Voltage Combination |
Connection Symbol |
No-Load Loss (W) |
Load Loss (W)75ºC |
No-Load Current (%) |
Short Circuit Impedance (%) |
High Voltage (kV) |
High Voltage Tapping Range(%) |
Low Voltage (kV) |
30 |
6
10
10.5
11 |
±5(or) ± 2 × 2.5 |
0.4 |
Dyn11( or) Yyn0 |
100 |
630/600 |
2.3 |
4 |
50 |
130 |
910/870 |
2 |
80 |
180 |
1310/1250 |
1.9 |
100 |
200 |
1580/1500 |
1.8 |
125 |
240 |
1890/1800 |
1.7 |
160 |
280 |
2310/2200 |
1.6 |
200 |
340 |
2730/2600 |
1.5 |
250 |
400 |
3200/3050 |
1.4 |
315 |
480 |
3830/3650 |
1.3 |
400 |
570 |
4520/4300 |
1.2 |
500 |
680 |
5410/5150 |
1.1 |
630 |
810 |
6200 |
1 |
4.5 |
800 |
980 |
7500 |
1 |
1000 |
1150 |
10300 |
1 |
1250 |
1360 |
12000 |
0.9 |
1600 |
1640 |
14500 |
0.8 |
2000 |
1940 |
18000 |
0.8 |
2500 |
2300 |
21000 |
0.6 |
Technical data of S11-M 11kV three-phase full seal non excitation voltage regulating distribution transformer
Rated capacity(kVA) |
Voltage Combination |
Connection Symbol |
No-Load Loss (W) |
Load Loss (W)75ºC |
No-Load Current (%) |
Short Circuit Impedance (%) |
High Voltage (kV) |
High Voltage Tapping Range(%) |
Low Voltage (kV) |
30 |
6
10
10.5
11 |
±5(or) ± 2 × 2.5 |
0.4 |
Dyn11( or) Yyn0 |
80 |
630/600 |
2.1 |
4 |
50 |
100 |
910/870 |
1.9 |
80 |
130 |
1310/1250 |
1.8 |
100 |
150 |
1580/1500 |
1.6 |
125 |
170 |
1890/1800 |
1.5 |
160 |
200 |
2310/2200 |
1.4 |
200 |
240 |
2730/2600 |
1.3 |
250 |
290 |
3200/3050 |
1.2 |
315 |
340 |
3830/3650 |
1.1 |
400 |
410 |
4520/4300 |
1.0 |
500 |
480 |
5410/5150 |
1.0 |
630 |
570 |
6200 |
0.9 |
4.5 |
800 |
700 |
7500 |
0.8 |
1000 |
830 |
10300 |
0.7 |
1250 |
970 |
12000 |
0.6 |
1600 |
1170 |
14500 |
0.6 |
2000 |
1360 |
18000 |
0.5 |
2500 |
1610 |
21000 |
0.4 |
Technical data of S11-M type 20kV three-phase full seal non excitation voltage regulating distribution transformer
Rated capacity(kVA) |
Voltage Combination |
Connection Symbol |
No-Load Loss (W) |
Load Loss (W)75ºC |
No-Load Current (%) |
Short Circuit Impedance (%) |
High Voltage (kV) |
High Voltage Tapping Range(%) |
Low Voltage (kV) |
30 |
20 |
±5(or) ± 2 × 2.5 |
0.4 |
Dyn11( or) Yyn0 |
100 |
690/660 |
2.1 |
5.5 |
50 |
130 |
1010/960 |
2.0 |
63 |
150 |
1200/1150 |
1.9 |
80 |
180 |
1440/1370 |
1.8 |
100 |
200 |
1730/1650 |
1.6 |
125 |
240 |
2080/1980 |
1.6 |
160 |
280 |
2540/2420 |
1.4 |
200 |
340 |
3000/2860 |
1.3 |
250 |
400 |
3520/3360 |
1.2 |
315 |
480 |
4210/4010 |
1.1 |
400 |
570 |
4970/4730 |
1.0 |
500 |
680 |
5940/5660 |
1.0 |
630 |
810 |
6820 |
0.9 |
6 |
800 |
980 |
8250 |
0.8 |
1000 |
1150 |
11330 |
0.7 |
1250 |
1360 |
13200 |
0.7 |
1600 |
1640 |
15950 |
0.6 |
2000 |
1940 |
19140 |
0.6 |
2500 |
2300 |
21000 |
0.5 |
Technical data of S13-M type 20kV three-phase full seal non excitation voltage regulating distribution transformer
Rated capacity(kVA) |
Voltage Combination |
Connection Symbol |
No-Load Loss (W) |
Load Loss (W)75ºC |
No-Load Current (%) |
Short Circuit Impedance (%) |
High Voltage (kV) |
High Voltage Tapping Range(%) |
Low Voltage (kV) |
30 |
20 |
±5(or) ± 2 × 2.5 |
0.4 |
Dyn11( or) Yyn0 |
80 |
690/660 |
2.0 |
5.5 |
50 |
100 |
1010/960 |
1.9 |
63 |
110 |
1200/1150 |
1.8 |
80 |
130 |
1440/1370 |
1.7 |
100 |
150 |
1730/1650 |
1.5 |
125 |
180 |
2080/1980 |
1.5 |
160 |
200 |
2540/2420 |
1.3 |
200 |
240 |
3000/2860 |
1.2 |
250 |
280 |
3520/3360 |
1.1 |
315 |
340 |
4210/4010 |
1.0 |
400 |
400 |
4970/4730 |
0.9 |
500 |
480 |
5940/5660 |
0.9 |
630 |
570 |
6820 |
0.8 |
6 |
800 |
680 |
8250 |
0.7 |
1000 |
810 |
11330 |
0.6 |
1250 |
980 |
13200 |
0.6 |
1600 |
1150 |
15950 |
0.5 |
2000 |
1360 |
19140 |
0.5 |
2500 |
1640 |
22220 |
0.4 |
Main technical parameters of 800kVA ~ 31500kVA three-phase double winding non Excitation: Dive into the realm of electrical excellence with our state-of-the-art excitation technology, offering unparalleled performance and reliability. Voltage: Experience the pinnacle of voltage precision with our Industrial Grade Voltage Transformer, designed to operate effortlessly across a wide ambient temperature range. Regulating: Our transformers boast advanced regulating capabilities, ensuring optimal performance and seamless adaptability to fluctuating energy demands. Power Transformer: Discover the unmatched power and efficiency of Jiangsu Hengyi's power transformers, engineered to elevate industrial applications to new heights.
Rated capacity(kVA) |
Voltage Combination |
Connection Symbol |
No-Load Loss (W) |
Load Loss (W)75ºC |
No-Load Current (%) |
Short Circuit Impedance (%) |
High Voltage (kV) |
High Voltage Tapping Range(%) |
Low Voltage (kV) |
630 |
33 |
± 5% |
3.15
6.3
10.5 |
Yd11 |
830 |
7870 |
1.1 |
6.5 |
800 |
980 |
9410 |
1 |
1000 |
1150 |
11540 |
1 |
1250 |
1410 |
13940 |
0.9 |
1600 |
1700 |
16670 |
0.8 |
2000 |
2180 |
18380 |
0.7 |
2500 |
2560 |
19670 |
0.6 |
3150 |
33~38.5 |
3040 |
23090 |
0.56 |
7 |
4000 |
3620 |
27360 |
0.56 |
5000 |
4320 |
31380 |
0.48 |
6300 |
5250 |
35060 |
0.48 |
7.5 |
8000 |
± 5% or ± 2 × 2. 5% |
3.15
3.3
6.3
6.6
10.5
11 |
YNd11 |
7200 |
38500 |
0.42 |
10000 |
8700 |
45300 |
0.42 |
12500 |
10080 |
53900 |
0.4 |
8 |
16000 |
12160 |
65800 |
0.4 |
20000 |
14400 |
79500 |
0.4 |
25000 |
17020 |
94100 |
0.32 |
31500 |
20220 |
112900 |
0.32 |
Main technical parameters of 2000 kVA ~ 20000 kVA three-phase double winding on-load voltage regulating power transformer: Explore the robust specifications and superior functionality that define our flagship transformers, tailored to meet diverse energy solutions with precision and excellence.
Rated capacity(kVA) |
Voltage Combination |
Connection Symbol |
No-Load Loss (W) |
Load Loss (W)75ºC |
No-Load Current (%) |
Short Circuit Impedance (%) |
High Voltage (kV) |
High Voltage Tapping Range(%) |
Low Voltage (kV) |
2000 |
33 |
± 3 × 2. 5% |
6.3
10.5 |
Yd11 |
2300 |
19240 |
0.8 |
6.5 |
2500 |
2720 |
20640 |
0.8 |
3150 |
33~38.5 |
3230 |
24710 |
0.72 |
7 |
4000 |
3870 |
29160 |
0.72 |
5000 |
4640 |
34200 |
0.68 |
6300 |
5630 |
36800 |
0.68 |
7.5 |
8000 |
6.3
6.6
10.5
11 |
YNd11 |
7870 |
40600 |
0.6 |
10000 |
9280 |
48100 |
0.6 |
12500 |
10940 |
56900 |
0.56 |
8.0 |
16000 |
13170 |
70300 |
0.54 |
20000 |
15570 |
82800 |
0.54 |
Main products
Company Profile
HY TRANSFORMER stands as a beacon of innovation in the realm of power solutions, being a distinguished high-tech enterprise devoted to the development, manufacturing, and distribution of cutting-edge power transformers and their ancillary products. Our expansive product range includes a variety of distribution transformers, expertly crafted for operations at 35kV and below. These include the SC(B)10, SC(B)11, and SC(B)12 series of epoxy resin cast dry-type transformers, the state-of-the-art non-sealed H grade dry-type power transformers, and the robust S series oil-immersed transformers. Moreover, our offerings feature the S(B)H15-M and S(B)H16-M sealed amorphous alloy transformers, as well as the YB series of box substations, known as the European box-type. Completing our extensive portfolio are the Combined transformers, or the American type prefabricated substations, designed to meet diverse industrial needs.
Drawing on years of unparalleled experience, HY TRANSFORMER unfailingly commits to a 'top quality' ethos, positioning our technology and product quality at the forefront of the transformer industry. Our products find extensive applications across a myriad of sectors, including power grids, power supply systems, coal, metallurgy, petroleum, chemical industries, construction, ports, airports, railway transportation, urban infrastructure, and beyond. All our products boast prestigious certifications such as ISO9001, ISO14001, OHSAS18001, and the PCCC Energy-saving Product Certification, alongside numerous patent recognitions. We diligently adhere to evolving national industry standards, underpinned by a robust management framework. By sourcing premier materials and enforcing meticulous process controls, we ensure every aspect of production is optimized and that our systems operate with utmost efficacy. Our unwavering commitment to quality and exceptional technical services has earned us global customer acclaim. Upholding the business principle of 'Stay with best quality, develop with high reputation,' we champion a 'double-win' collaboration philosophy with all our partners. Our dedication extends towards advancing the world's green electrical power landscape, and we eagerly invite you to join us on this transformative journey. Embrace our products and together, let's forge a brighter, more sustainable future!
Company's advantages
Certifications
Exhibition
Packaging & Shipping
FAQ
Q.Are you a trading company or a manufacturer?
A.We are a professional manufacturer of high and low voltage switchgear, substations, transformers, cable distribution boxes and various electrical equipment. We have accumulated 20 years of experience. Our factory is an outstanding supplier of China State Grid Corporation.
Q. Do you offer customized services?
A.We offer OEM/ODM services and can print your logo on the products. Our professional technical and quotation teams can provide satisfactory projects based on your drawings and parameters.
Q. What is your minimum order quantity?
A.Our minimum order quantity is one piece.
Q. How long is your delivery cycle?
A.This depends on your product requirements and quantity. Generally, it will take 5 to 10 working days.
Q. How do you deal with quality issues?
A.Please provide detailed photos of the quality issues. Our technical and quality inspection departments will conduct an analysis. We will offer a satisfactory solution within two days.
Q. What are your payment terms?
A.30% by wire transfer, 70% before shipment. Western Union remittance, letter of credit are also acceptable.