| Project | Unit | FKN12-12 Load switch | FZN25-12 Vacuum load switch |
|---|---|---|---|
| Rated voltage | KV | 10 | |
| Maximum working voltage | KV | 12 | |
| Rated frequency | HZ | 50 | |
| Rated current | A | 630 | |
| Thermally stable current | KA/S | 20/2 | 20/4 |
| Dynamic steady current | KA | 50 | 50 |
| Short circuit closing current | KA | 50 | 50 |
| Full load breaking times | T | 20 | 10000 |
| Mechanical life | T | 2000 | 10000 |
| Impulse voltage | KV | 75 | 75 |
Box-type substation is a compact, efficient and reliable power transformation equipment. It combines high-voltage switchgear, transformers and low-voltage distribution devices in a metal box. It has the advantages of small size, less floor space, and easy installation.
It can effectively ensure the stability and security of power supply and is widely used in urban power grid transformation, industrial and mining enterprises, residential areas and other places. It is an indispensable and important component of the power system, providing solid power guarantee for our life and production.


Transformer substation plays the role of voltage conversion equipment. Transformer is the main equipment of substation, which is divided into double-winding transformer, three-winding transformer and self-destructive transformer. The voltage is proportional to the number of turns and the current is inversely proportional to the number of turns.
Substations are also widely used in wind farms, photovoltaic power stations, hydropower stations, nuclear power plants, hub substations, and backbone power grids.





We are a leading intelligent technology enterprise specializing in the research, development, manufacturing, and sales of power transformers, high and low voltage switch cabinets, and box-type substations.
Our state-of-the-art factory spans nearly 100,000 square meters. With a professional team including dozens of engineers and technical personnel, we are committed to delivering high-quality products that meet unique regional requirements.
Utilizing advanced technology and adhering to ISO9000 quality certification standards, our products are designed to be environmentally friendly, energy-saving, and low-carbon solutions.


We prioritize quality for survival and efficiency through management. Our commitment to innovation drives us to apply new technologies rapidly. We specialize in high-reliability, maintenance-free, intelligent, and energy-saving power transmission equipment.
