I. Product Introduction
The S Series 35kV power transformers are core equipment developed by our company specifically for power transmission and distribution applications. With key advantages such as low loss, leak-free operation, low noise, and short-circuit resistance, they are widely used in urban power grids, industrial and mining enterprises, and new energy power plants, providing users with stable, efficient, and reliable voltage transformation and power transmission solutions.
Designed and manufactured in strict compliance with national and industry standards, this series undergoes comprehensive quality control throughout the entire process—from raw material selection to production techniques. While ensuring high power transmission efficiency, it minimizes operational and maintenance costs as well as envi
ronmental impact, making it the ideal choice for power equipment at the 35kV voltage level.
II. Product Features:
Low Losses: The core is constructed from high-quality, high-permeability cold-rolled silicon steel sheets. It features multi-stage, fully skewed, fully automated lamination, and the core is bound using an integrated compression process, effectively reducing the transformer’s no-load losses and no-load current.
No Leaks: The tank and oil reservoir undergo positive and negative pressure leak tests to ensure no oil leakage occurs during normal operation. Components are installed using a flange groove structure, and all seals are made of high-quality, one-piece molded parts to prevent oil leakage.
Low Noise: Noise is minimized through a low magnetic flux density design, high-quality high-permeability silicon steel sheets, reliable clamping and bracing measures, and special vibration-damping measures.
Short-Circuit Resistance: The transformer windings use semi-hard copper wire, and the core clamping components meet safety requirements for maximum short-circuit mechanical forces; the windings are assembled as a single unit and compressed as a whole, ensuring assembly precision and guaranteeing short-circuit resistance.
III. Technical Specifications
Note: The dimensions, weight, and other specifications provided above are for design and selection purposes only. Final specifications are subject to the product as shipped. Customization options for other models are available upon request.
S22-3150–31500/35 Non-Excitation Voltage-Regulating Transformer (Energy Efficiency Class 1) | High voltage (kV): 35–38.5 Low voltage (kV): 3.15, 3.3, 6.3, 6.6, 10.5, 11 Tap range: ±5%, ±2×2.5%
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Rated Capacity (kVA)
| Group Designation | No-load Loss (kW) | Load Loss (kW) (75°C) | No-load Current (%) | Short-circuit Impedance (%) |
3150 | Yd11 | 1.7 | 20.7 | 0.45 | 7 |
4000 | Yd11 | 2 | 24.6 | 0.45 | 7 |
5000 | Yd11 | 2.4 | 28.2 | 0.45 | 7 |
6300 | Yd11 | 2.9 | 31.5 | 0.45 | 8 |
8000 | YNd11 | 4 | 34.6 | 0.35 | 8 |
10000 | YNd11 | 4.8 | 40.8 | 0.35 | 8 |
12500 | YNd11 | 5.5 | 48.4 | 0.3 | 8 |
16000 | YNd11 | 6.7 | 59.2 | 0.3 | 8 |
20000 | YNd11 | 7.9 | 71.6 | 0.3 | 8 |
25000 | YNd11 | 9.4 | 84.6 | 0.25 | 10 |
31500 | YNd11 | 11.1 | 100.8 | 0.25 | 10 |
SZ22-3150–31500/35 On-Load Voltage-Regulating Oil-Immersed Transformer (Energy Efficiency Class 1) | High voltage (kV): 35–38.5 Low voltage (kV): 3.15, 3.3, 6.3, 6.6, 10.5, 11 Tap range: ±5%, ±2×2.5%
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Rated Capacity (kVA)
| Group Designation | No-load Loss (kW) | Load Loss (kW) (75°C) | No-load Current (%) | Short-circuit Impedance (%) |
3150 | Yd11 | 1.8 | 22.2 | 0.5 | 7 |
4000 | Yd11 | 2.1 | 26.2 | 0.5 | 7 |
5000 | Yd11 | 2.6 | 30.8 | 0.5 | 7 |
6300 | Yd11 | 3.1 | 33 | 0.5 | 7.5 |
8000 | YNd11 | 4.3 | 36.5 | 0.4 | 7.5 |
10000 | YNd11 | 5.1 | 43.2 | 0.4 | 7.5 |
12500 | YNd11 | 6 | 51.1 | 0.35 | 8 |
16000 | YNd11 | 7.2 | 63.3 | 0.35 | 8 |
20000 | YNd11 | 8.5 | 74.4 | 0.3 | 8 |
25000 | YNd11 | 10.1 | 88 | 0.3 | 10 |
31500 | YNd11 | 12 | 104.4 | 0.3 | 10 |
S20-3150–31500/35 Non-Excitation Voltage-Regulating Transformer (Energy Efficiency Class 2) | High Voltage (kV): 35–38.5 Low Voltage (kV): 3.15, 3.3, 6.3, 6.6, 10.5, 11 Tap Settings: ±5%, ±2×2.5% | ||||
Rated Capacity (kVA)
| Group Designation | No-load Loss (kW) | Load Loss (kW) (75°C) | No-load Current (%) | Short-circuit Impedance (%) |
3150 | Yd11 | 2 | 20.7 | 0.45 | 7 |
4000 | Yd11 | 2.3 | 24.6 | 0.45 | 7 |
5000 | Yd11 | 2.8 | 28.2 | 0.45 | 7 |
6300 | Yd11 | 3.4 | 31.5 | 0.45 | 8 |
8000 | YNd11 | 4.7 | 34.6 | 0.35 | 8 |
10000 | YNd11 | 5.7 | 40.8 | 0.35 | 8 |
12500 | YNd11 | 6.5 | 48.4 | 0.3 | 8 |
16000 | YNd11 | 7.9 | 59.2 | 0.3 | 8 |
20000 | YNd11 | 9.4 | 71.6 | 0.3 | 8 |
25000 | YNd11 | 11.1 | 84.6 | 0.25 | 10 |
31500 | YNd11 | 13.1 | 100.8 | 0.25 | 10 |
S18-3150–31500/35 Non-Excitation Voltage-Regulating Transformer (Energy Efficiency Class 3)
| High voltage (kV): 35–38.5 Low voltage (kV): 3.15, 3.3, 6.3, 6.6, 10.5, 11 Tap range: ±5%, ±2×2.5%
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Rated Capacity (kVA) | Group Designation | No-load Loss (kW) | Load Loss (kW) (75°C) | No-load Current (%) | Short-circuit Impedance (%) |
3150 | Yd11 | 2.4 | 21.9 | 0.45 | 7 |
4000 | Yd11 | 2.9 | 25.9 | 0.45 | 7 |
5000 | Yd11 | 3.5 | 29.7 | 0.45 | 7 |
6300 | Yd11 | 4.2 | 33.3 | 0.45 | 8 |
8000 | Yd11 | 5.8 | 36.5 | 0.35 | 8 |
10000 | Yd11 | 7 | 43 | 0.35 | 8 |
12500 | YNd11 | 8 | 51.1 | 0.3 | 8 |
16000 | YNd11 | 9.7 | 62.5 | 0.3 | 8 |
20000 | YNd11 | 11.5 | 75.5 | 0.3 | 8 |
25000 | YNd11 | 13.6 | 89.3 | 0.25 | 10 |
31500 | YNd11 | 16.2 | 106.4 | 0.25 | 10 |
SZ18-3150–31500/35 On-Load Voltage-Regulating Oil-Immersed Transformer (Energy Efficiency Class 3)
| High voltage (kV): 35–38.5 Low voltage (kV): 3.15, 3.3, 3.6, 3.6, 6, 10.5, 11 Tap range: ±5%, ±2 × 2.5%
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Rated Capacity (kVA) | Group Designation | No-load Loss (kW) | Load Loss (kW) (75°C) | No-load Current (%) | Short-circuit Impedance (%) |
3150 | Yd11 | 2.6 | 23.5 | 0.5 | 7 |
4000 | Yd11 | 3.1 | 27.6 | 0.5 | 7 |
5000 | Yd11 | 3.7 | 32.5 | 0.5 | 7 |
6300 | Yd11 | 4.5 | 34.9 | 0.5 | 7.5 |
8000 | YNd11 | 6.3 | 38.6 | 0.4 | 7.5 |
10000 | YNd11 | 7.4 | 45.6 | 0.4 | 7.5 |
12500 | YNd11 | 8.7 | 54 | 0.35 | 8 |
16000 | YNd11 | 10.5 | 66.8 | 0.35 | 8 |
20000 | YNd11 | 12.4 | 78.6 | 0.3 | 8 |
25000 | YNd11 | 14.6 | 92.9 | 0.3 | 10 |
31500 | YNd11 | 17.4 | 110.2 | 0.3 | 10 |
SZ11-2000–40000/35 On-Load Tap-Changing Oil-Immersed Transformer
| High voltage (kV): 35–38.5 Low voltage (kV): 3.15, 3.3, 6.3, 6.6, 10.5, 11.0 Tap range: ±3 × 2.5%
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Rated Capacity (kVA) | Connection Group Designation | No-Load Loss (kW) | Load Loss (kW) (75°C) | No-Load Current (%) | Short-Circuit Impedance (%) | Length (mm) | Width (mm) | Height (mm) | Total Weight (kg) | Track Gauge (mm) |
2000 | Yd11 | 2.3 | 19.2 | 0.5 | 6.5 | 3160 | 2170 | 2550 | 6900 | 1070/1070 |
2500 | Yd11 | 2.72 | 20.6 | 0.5 | 6.5 | 3250 | 2740 | 2740 | 7500 | 1070/1070 |
3150 | Yd11 | 3.23 | 24.7 | 0.5 | 7 | 3360 | 2990 | 2850 | 8640 | 1070/1070 |
4000 | Yd11 | 3.87 | 29.1 | 0.5 | 7 | 3540 | 2940 | 2950 | 11200 | 1070/1070 |
5000 | Yd11 | 4.64 | 34.2 | 0.5 | 7 | 3800 | 3400 | 3250 | 11495 | 1070/1070 |
6300 | Yd11 | 5.63 | 36.7 | 0.5 | 7.5 | 4150 | 3420 | 3750 | 13460 | 1070/1070 |
8000 | YNd11 | 7.87 | 40.6 | 0.4 | 7.5 | 4350 | 3450 | 3790 | 16305 | 1475/1475 |
10000 | YNd11 | 9.28 | 48 | 0.4 | 8 | 4400 | 3520 | 3810 | 18090 | 1475/1475 |
12500 | YNd11 | 10.9 | 56.8 | 0.35 | 8 | 4450 | 3670 | 3850 | 23400 | 1475/1475 |
16000 | YNd11 | 13.1 | 70.3 | 0.35 | 8 | 4480 | 4080 | 3900 | 24300 | 1475/1475 |
20000 | YNd11 | 15.6 | 82.7 | 0.3 | 8 | 4500 | 4200 | 3950 | 29540 | 1475/1475 |
25000 | YNd11 | 18.3 | 97.8 | 0.3 | 8.0 10.0 | 4990 | 4320 | 4080 | 36400 | 2040/1475 |
31500 | YNd11 | 21.8 | 116 | 0.3 | 8.0 10.0 | 5220 | 4590 | 4140 | 44500 | 2040/1475 |
40000 | YNd11 | 26.2 | 139 | 0.3 | 8.0 10.0 | 5430 | 4540 | 4270 | 53300 | 2040/1475 |
S11-50–75,000/35 Non-Excitation Voltage-Regulating Transformer
| High voltage (kV): 35–38.5 Tap range: ±5% ±2×2.5%
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Rated Capacity (kVA)
| Low Voltage (kV) | Connection Group Designation | No-Load Losses (kW) | Load Losses (kW) (75°C) | No-Load Current (%) | Short-Circuit Impedance (%) | Length (mm) | Width (mm) | Height (mm) | Total Weight (kg) | Track Gauge (mm) |
50 | 0.4 | Dyn11 Yyn0 | 0.16 | 1.2 | 1.3 | 6.5 | 2300 | 950 | 2190 | 1285 | 660/660 |
100 | 0.4 | Dyn11 Yyn0 | 0.23 | 2.01 | 1.1 | 6.5 | 1175 | 1000 | 1850 | 1015 | 660/660 |
125 | 0.4 | Dyn11 Yyn0 | 0.27 | 2.37 | 1.1 | 6.5 | 1190 | 1120 | 1870 | 1260 | 660/660 |
160 | 0.4 | Dyn11 Yyn0 | 0.28 | 2.82 | 1 | 6.5 | 1220 | 1140 | 1900 | 1390 | 660/660 |
200 | 0.4 | Dyn11 Yyn0 | 0.34 | 3.32 | 1 | 6.5 | 1240 | 1130 | 1955 | 1545 | 660/660 |
250 | 0.4 | Dyn11 Yyn0 | 0.4 | 3.95 | 0.95 | 6.5 | 1720 | 1140 | 1980 | 1635 | 660/660 |
315 | 0.4 | Dyn11 Yyn0 | 0.48 | 4.75 | 0.95 | 6.5 | 1820 | 1240 | 1950 | 1700 | 660/660 |
400 | 0.4 | Dyn11 Yyn0 | 0.58 | 5.74 | 0.85 | 6.5 | 1840 | 800 | 2400 | 2075 | 820/820 |
500 | 0.4 | Dyn11 Yyn0 | 0.68 | 6.91 | 0.85 | 6.5 | 1960 | 830 | 2430 | 2450 | 820/820 |
630 | 0.4 | Dyn11 Yyn0 | 0.83 | 7.86 | 0.65 | 6.5 | 2050 | 1750 | 2275 | 3140 | 820/820 |
800 | 0.4 | Dyn11 Yyn0 | 0.98 | 9.4 | 0.65 | 6.5 | 2165 | 1430 | 2235 | 3525 | 820/820 |
1000 | 0.4 | Dyn11 Yyn0 | 1.15 | 11.5 | 0.65 | 6.5 | 2270 | 1125 | 2500 | 4970 | 820/820 |
1250 | 0.4 | Dyn11 Yyn0 | 1.4 | 13.9 | 0.6 | 6.5 | 2550 | 1146 | 2470 | 4910 | 820/820 |
1600 | 0.4 | Dyn11 Yyn0 | 1.69 | 16.6 | 0.6 | 6.5 | 2570 | 1240 | 2630 | 5730 | 820/820 |
2000 | 0.4 | Dyn11 Yyn0 | 1.99 | 19.7 | 0.55 | 6.5 | / | / | / | / | 820/820 |
2500 | 0.4 | Dyn11 Yyn0 | 2.36 | 23.2 | 0.55 | 6.5 | / | / | / | / | 820/820 |
630 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 0.83 | 7.86 | 0.65 | 6.5 | / | / | / | / | 820/820 |
800 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 0.98 | 9.4 | 0.65 | 6.5 | 2240 | 900 | 2490 | 3780 | 820/820 |
1000 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 1.15 | 11.5 | 0.65 | 6.5 | 2270 | 1125 | 2500 | 3980 | 820/820 |
1250 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 1.4 | 13.9 | 0.55 | 6.5 | 2550 | 1200 | 2560 | 5260 | 820/820 |
1600 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 1.69 | 16.6 | 0.45 | 6.5 | 2540 | 1240 | 2670 | 5530 | 1070/1070 |
2000 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 2.17 | 18.3 | 0.45 | 6.5 | 2060 | 1550 | 2850 | 6390 | 1070/1070 |
2500 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 2.56 | 19.6 | 0.45 | 6.5 | 2560 | 2450 | 2860 | 7690 | 1070/1070 |
3150 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 3.04 | 23 | 0.45 | 7 | 2740 | 2830 | 2870 | 8245 | 1070/1070 |
4000 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 3.61 | 27.3 | 0.45 | 7 | 2930 | 2970 | 2930 | 8860 | 1070/1070 |
5000 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 4.32 | 31.3 | 0.45 | 7 | 2950 | 2790 | 2895 | 10375 | 1070/1070 |
6300 | 3.15 3.3 6.3 6.6 10.5 11 | Yd11 | 5.24 | 35 | 0.45 | 8 | 3110 | 2890 | 3360 | 14040 | 1475/1475 |
8000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 7.2 | 38.4 | 0.35 | 8 | 3500 | 4150 | 3400 | 15865 | 1475/1475 |
10000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 8.7 | 45.3 | 0.35 | 8 | 3600 | 3600 | 3500 | 17750 | 1475/1475 |
12500 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 10 | 53.8 | 0.3 | 8 | 4285 | 3720 | 3690 | 22450 | 1475/1475 |
16000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 12.1 | 65.8 | 0.3 | 8 | 4350 | 3910 | 4375 | 30050 | 1475/1475 |
20000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 14.4 | 79.5 | 0.3 | 8 | 5240 | 4100 | 4050 | 30900 | 2040/1475 |
25000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 17 | 94 | 0.25 | 8.0 10.0 | 4682 | 3500 | 4255 | 31725 | 2040/1475 |
31500 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 20.2 | 112 | 0.25 | 8.0 10.0 | 5800 | 4800 | 4400 | 42000 | 2040/1475 |
40000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 25.9 | 150 | 0.25 | 8.0 10.0 | 4830 | 4940 | 4470 | 49250 | 2040/1475 |
50000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 29.4 | 210 | 0.25 | 8.0 10.0 | 4960 | 5070 | 4510 | 56800 | 2040/1475 |
63000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 31.2 | 250 | 0.2 | 8.0 10.0 | 4990 | 5110 | 4740 | 60550 | 2040/1475 |
75000 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 33.4 | 300 | 0.2 | 8.0 10.0 | 5010 | 5250 | 4880 | 66500 | 2040/1475 |
IV. Company Profile
Our company is a high-tech enterprise specializing in the research, development, production, and sales of power equipment. With years of experience in the transformer industry, we possess a comprehensive R&D system and robust manufacturing capabilities. Guided by the product philosophy of “safety, efficiency, and reliability,” we provide high-quality power transformers and integrated solutions to customers worldwide. We have served major projects for clients such as State Grid, PetroChina, China Hydroelectricity, China Railway, China Resources, and Vanke.
V. Honors and Certifications
Our products have been tested and certified by authoritative national agencies. We have obtained ISO 9001 Quality Management System certification and ISO 14001 Environmental Management System certification, as well as numerous industry honors and patented technologies. Our products meet the technical standards of the State Grid and various industrial users, and have received international CE certification. Their quality and performance are widely recognized.
VI. Manufacturing Capabilities
Equipped with modern production facilities and advanced testing equipment, we have established a comprehensive quality control system covering the entire process from raw material intake to finished product shipment. We are capable of meeting large-scale customized production demands and ensuring the reliable delivery of every power transformer.
VII. Manufacturing Process
From the cutting of silicon steel sheets and the lamination of the core to coil winding and tank welding, every step of the process employs precision craftsmanship and strictly adheres to industry standards, ensuring that every product delivers exceptional quality characterized by low loss, leak-free operation, low noise, and short-circuit resistance.
VIII. Services and After-Sales Support
We provide full-lifecycle services ranging from design and installation to commissioning, operation, and maintenance. We have established a rapid response mechanism to resolve any issues users may encounter during equipment operation, ensuring the long-term stable operation of power transformers and giving users complete peace of mind.
Our factory is in Shenyang City, Liaoning Province.We are a professional factory with more than 30 years experience in the field of High and low Voltage switchgears, Substation ,Transformers,Cable distribution box and various Electrical equipment. Our factory is the excellent supplier of State Grid Corporation od China. *We have more than 30 years to produce different kinds of transformers. *Our factory continue to insist to customers oriented and seek development of technology and science *Our products have high quality and the deep love of our customers *Our products have obtained international certifications such as ISO, CE, IEC certification. *We have a strong supply chain and after-sale service.
We offer OEM/ODM service. Our professional technical and quotation team can provice a satisfied project according to your drawing and parameters.
Our MOQ is 1 piece.
It depends on your product requirement and quantity.
Our core business focuses on the research, development, manufacturing, sales, and maintenance services of power equipment, including transformers, high and low voltage switchgear, and pre-assembled substations. We also provide power engineering construction, technical consulting, and self-operated import/export services, delivering one-stop power equipment solutions and supporting services to domestic and international clients. With years of deep involvement in the power equipment industry, we have accumulated extensive industry expertise.
The company was founded in 1993 and is located in Shenyang City, Liaoning Province. The specific address can be found on the “Contact Us” section of our official website, or you may contact customer service for detailed information.
Our company has obtained ISO 9001 Quality Management System Certification, CE Certification, IEC Certificate, ECM Certification, High-Tech Enterprise Certification, Green Environmental Protection Promotion Enterprise Certification, Environmental Management System Certification, Occupational Health and Safety Management System Certification, Quality Management System Certification, Smart Factory Certification, multiple invention patents, and utility model patents. All operations comply with relevant industry standards in China and target export markets. Certification documents are available for client verification.
Our products/services are primarily categorized into three main groups: New energy power equipment: such as wind and photovoltaic power generation supporting equipment; and services including: smart construction and maintenance, power construction, installation, and maintenance services, and smart construction and maintenance, power construction, installation, and maintenance services. For specific details, please refer to the “Products/Services” section on our official website or contact a sales consultant for a detailed introduction.
Product/service pricing is determined through comprehensive calculation based on product specifications, material standards, service duration, customization requirements, purchase volume, export logistics costs, and other factors. For a specific quote, please contact our sales consultant. After providing your detailed requirements, we will issue a comprehensive quotation proposal. Our pricing is transparent with no hidden fees.
Yes. For clients requiring customization, we can assign a dedicated team to develop a bespoke solution based on your specific needs. This includes: - Electrical equipment functionality, appearance, and specifications - International trade service processes, logistics methods, and customs clearance solutions - Service content, execution procedures, and timelines We ensure all personalized requirements are met.
You may learn more through the following methods: ① View detailed descriptions in the “Products/Services” section of our official website; ② Contact customer service to obtain product manuals; ③ Schedule an in-person demonstration or online presentation through customer service, where professionals will address your questions; ④ Contact customer service to obtain multilingual product materials and export compliance documentation.
The core differences lie in energy efficiency ratings and no-load losses. For industrial parks and scenarios with long-term full-load operation, choose the S20 series for sustained energy savings. For rural grids and scenarios with significant load fluctuations, the S13 series offers better cost-effectiveness. Specific selection should consider on-site conditions, capacity requirements, and installation environments. We provide complimentary selection consultation services.
Our products comply with internationally recognized standards and meet local market access requirements worldwide. We hold certifications such as ISO 9001 and can provide all necessary compliance qualifications and certification documents required by the destination country/region to ensure local customs clearance and usage requirements are met. For specific details, please contact our customer service or sales representatives.
We provide full-process technical support. Nationwide logistics distribution includes wooden crate packaging for impact protection. Export products use packaging compliant with international shipping standards to ensure cargo safety. Installation support includes remote video guidance + printed manuals with one-on-one wiring assistance. For complex projects, customized installation services can be arranged based on project requirements.
The procurement process primarily consists of four steps: ① You submit your procurement requirements (specifications, quantity, delivery time, delivery address); ② We issue a quotation and contract; both parties sign the contract after confirming its accuracy; ③ Payment is made according to the contract terms; ④ We deliver the products/provide the services as specified in the contract and complete the acceptance process.
Yes. For bulk purchasing clients, we offer corresponding volume discounts based on purchase quantity, cooperation duration, and other factors. Specific discount levels can be negotiated with our sales consultants.
We provide full-process foreign trade customs declaration services. The standard procedure is as follows: ① The client provides the Proforma Invoice (PI), packing list, and contract; ② Our company prepares the complete set of documents, including the customs declaration form and commodity inspection form; ③ We handle the declaration; ④ After clearance, we arrange sea/air freight. Supported trade terms include: FOB, CIF, EXW, DAP, etc., which can be flexibly selected based on the client's purchasing preferences.
We support small-batch trial orders and sample requests. ① Sample Scope: Standard accessories and small prototypes are available. ② Delivery Methods: Domestic shipments via standard logistics/courier; international shipments via FedEx/EMS. ③ Cost Details: Samples are free of charge; international shipping fees are borne by the customer.
To reduce the impact of exchange rate fluctuations, it is recommended to adopt multi-currency settlement. Additionally, based on the collaboration cycle, parties may negotiate fixed exchange rate settlement arrangements to minimize the effect of exchange rate volatility on their partnership.
You may submit feedback through the following channels: ① Send an email to tt@ttdl.cn. We will respond within 24 hours. ② Contact your assigned sales representative or customer service agent for assistance with reporting and resolution.
Yes. For customers purchasing our products or utilizing our collaborative services, we offer technical training and operational guidance to help them quickly master product usage and service integration techniques. Should you require technical support afterward, you may contact our technical team at any time. We will respond promptly to resolve any technical issues.
① Email or online customer service inquiries: Response within 24 hours; ② Contact your dedicated sales representative: Receive immediate response and expedited handling; ③ We will rapidly diagnose the cause of the failure and provide solutions through remote communication, operational parameters, and failure symptoms; ④ For on-site service, we will coordinate the optimal technical support plan based on the project location and actual circumstances.
Product returns and exchanges are handled according to the terms of the contract signed by both parties. Customers may submit requests through our after-sales service or sales representatives, providing order details, product information, and relevant explanations. We will review and process the request based on contractual agreements and actual circumstances. Note: Customized products and equipment that have been installed or used generally cannot be returned or exchanged; however, repair and technical support services are available. For products involving export, compliance with international trade, logistics, and customs clearance regulations is also required.
You may contact your assigned sales consultant or customer service representative, provide your order details, and inquire about the real-time progress. For export orders, you can simultaneously track customs clearance and logistics updates. We will also regularly update you on order production, delivery, or service execution to ensure you stay informed.
Specific job openings, qualification requirements, and related details are subject to the information published on the company's official website. Please visit the website for further details.
You may contact customer service online or send an email to tt@ttdl.cn. We will respond within 24 hours.
Our company strictly adheres to national privacy protection laws and regulations, establishing a comprehensive customer information protection system. All customer information is used solely for business coordination and service provision. We will never disclose or sell customer information to third parties without authorization, ensuring the security of customer data. For international trade clients, we additionally comply with privacy protection regulations of the target markets.
We strictly adhere to the laws and regulations of target markets. Our production processes comply with the ISO 14001 Environmental Management System; our products meet the RoHS environmental directive; and overseas projects implement local labor standards, ensuring compliant operations and safeguarding clients from compliance risks in their local business activities.
1. Ultra-low loss characteristics, energy-saving and high power efficiency 2. Low energy cost and ultra-low loss, maintenance-free and pollution-free 3. Low operating temperature, slow insulation aging and long service life of transformer 4. High overload capacity and high mechanical strength 5. Good harmonic resistance 6. Investment returns quickly
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1.Low Noise,No Environmental Contamination 2.Low Temperature Rise,High Overload Capacity 3.Strong Sudden Short-Circuit Resistance,Safe and Reliable Running 4.Low Losses,Evident EnergySaving Effects 5.High Insulation Level,Low Local Discharges
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1.Low Noise,No Environmental Contamination 2.Low Temperature Rise,High Overload Capacity 3.Strong Sudden Short-Circuit Resistance,Safe and Reliable Running 4.Low Losses,Evident EnergySaving Effects 5.High Insulation Level,Low Local Discharges
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1.Low Noise,No Environmental Contamination 2.Low Temperature Rise,High Overload Capacity 3.Strong Sudden Short-Circuit Resistance,Safe and Reliable Running 4.Low Losses,Evident EnergySaving Effects 5.High Insulation Level,Low Local Discharges
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1.Reasonable structure 2.Low loss and light weight 3.Low noise 4.High overload capacity 5.Cost saving
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1.Safe,Combustion Resistant/Fire Retardant,Without Pollution,Capable of Direct Installation on Load Center 2.Maintenance Free,Convenient to Install,Low in Composite Operation Cost 3.Excellent inHumidityResistance,Capable of Runing Normall under 100%Humidity,Capable of Being Putinto Operation atterdleness without 4.Pre-drying Treatment 5.LowLoss,LowLocal Discharges,Low Noise,Strong Heat Radiation,Capable ofRunning under 150% Nominal Load with the aid of Forced Air Cooling.
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High-efficiency S13 series transformer with low loss, strong short-circuit resistance and sufficient inventory for fast delivery.
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1、High energy efficiency with low losses, outperforming national standards 2、Excellent short-circuit resistance, strong resistance to grid load impacts 3、High thermal stability, suitable for high-load operating conditions
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1、Energy conservation, Stable operation, Highly efficient and Environmentally friendly advantages 2、 Reliable power guarantee for the power distribution system 3、Reduces energy consumption and environmental impact
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1、Safe, Combustion Resistant/Fire Retardant, Without Pollution, Capable of Direct Installation on Load Center； 2、Maintenance Free, Convenient to Install, Low in Composite Operation Cost; 3、 Low Loss, Low Local Discharges, Low Noise, Strong Heat Radiation, Capable of Runing under 150% Nominal Load with the aid of Forced Air Cooling
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