Product Description
This series of on-load tap changers is designed for three-phase or single-phase oil-immersed voltage-regulated transformers with a voltage class of 35 kV, a rated current in the range of 100 to 400 A, and a frequency of 50 to 60 Hz. Using tap-change operations, the tap changer can flexibly change the number of turns of the coil windings in the case of a transformer under load, thus realizing the adjustment of the line voltage.
On the right side is a detailed drawing of the product dimensions.
Whether they are used in distribution systems, substations, or other electrical equipment, the on-load tap changers of this series provide stable and reliable voltage regulation solutions for a wide range of scenarios. Whether in industry, agriculture, or construction, it provides your power equipment with high-quality voltage control performance and ensures the proper operation of the power supply system.
Product Parameters
| Max. rated through-current Ir (A) |
200~400 |
| Number of phases |
Single-phase/three-phase |
| Rated frequency (Hz) |
50~60 |
| Rated short-time current (kA) |
Thermal stabilization (3s) |
4 |
| Dynamic stabilization (peak) |
10 |
| Rated step voltage (V) |
1000 |
| Max. operating positions |
10 |
| Rated voltage (kV) |
35 |
| Max. operating voltage (kV) |
42 |
| Applicable transformer connections |
Y |
△ |
| Insulation test voltage 1min (kV) |
To ground |
85 |
| Phase to phase |
45 |
85 |
| First, End |
45 |
| Impulse |
200 |
| Wight(kg) |
Model 200A/150,Model 400A/180 |
| Matching Controller |
Model specifications are shown in the randomized annex |
FAQ
1. Q: What are your main products?
A: For over four decades, our company has specialized in developing and producing on-load tap changers. Our extensive product range caters to power transformers, furnace transformers, specialized transformers, and various other industries.
2. Q: Are you a manufacturer?
A: Yes. Wukai Electric (Jiangsu) Co., Ltd. proudly is a leading on-load tap changer manufacturer. With a state-of-the-art factory spanning 20,000 square meters and a dedicated workforce of over 100 employees, our production line has delivered nearly 100,000 units currently operational in networks worldwide. Additionally, we offer comprehensive OEM and ODM services to meet diverse customer needs.
3. Q: How do you control the quality of your products?
A: We implement a stringent quality control system throughout every stage of the production process. Upon completion, each product undergoes thorough testing by relevant standards. A detailed factory inspection report accompanies all shipping documents, ensuring transparency and reliability.
4. Q: What's your payment terms?
A: We are flexible and accept various payment terms such as T/T, L/C, and more.
5. Q: What are your products packaged for transportation?
A: Our products are securely packaged in robust composite wood crates to ensure safe transportation.
6. Q: What kind of credentials do you have?
A: We hold several prestigious credentials including a Quality Management System Certificate and a High-tech Enterprise Certificate, among others.
7. Q: Can I come to visit your factory?
A: Absolutely! We warmly welcome you to visit our factory and witness our operations firsthand.
Audited Supplier 
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