Comprehensive Guide to Pad-mounted transformer
Time：2025-03-4 Auther：ZTelec-www.ztelectransformer.com
What is pad-mounted transformer?
Pad-mounted transformers are mainly composed of transformers, switches, protection devices, temperature control devices, distribution cabinets, etc. Its main function is to convert high-voltage electric energy into low-voltage electric energy and distribute it to various end users through transformers and distribution devices. Pad-mounted transformers are usually installed in public places such as substations, industrial parks, and urban streets to provide stable and reliable power supply for residents and commercial users.
Features of pad-mounted transformers
Pad-mounted transformers have simple structures, convenient operation, small size, and small footprint.
The volume of pad-mounted transformers is usually only about 1/3 of that of prefabricated substation of the same capacity, which makes pad-mounted transformers have significant advantages in space utilization.
Pad-mounted transformers adopt a fully sealed and fully insulated structure. It does not require insulation distance and can protect personal safety.
Pad-mounted transformers also have the characteristics of strong overload capacity, low loss, and live pluggable high-voltage cable heads, which improves power supply reliability and flexibility.
Advantages of pad-mounted transformers
1. Small size and compact structure
The design of pad-mounted transformers focuses on space utilization. Its small size and compact structure make it extremely advantageous in installation and transportation. Especially in environments with limited space such as cities, pad-mounted transformers can easily adapt to various installation scenarios and effectively save space resources.
2. Safe and reliable operation
The pad-mounted transformer adopts a fully sealed oil tank and fully insulated design, which effectively prevents the external environment from affecting the internal equipment, thereby improving the safety and reliability of operation. In addition, it has strong overload capacity and excellent short-circuit performance. And it can operate stably in complex and changeable power environments.
3. Convenient operation and reliable power supply
The pad-mounted transformer is suitable for ring network and terminal power supply systems, and can meet the power supply needs of different scenarios. Its operation mode is flexible and can be quickly adjusted according to actual conditions to ensure the continuity and reliability of power supply.
4. Energy saving, low consumption and long life:
The pad-mounted transformer performs well in energy saving, and its loss value is not higher than the new S9 loss value, which effectively reduces energy consumption. At the same time, its mechanical life and electrical life are long, and it can maintain stable operation for a long time, reducing maintenance costs.
Disadvantages of pad-mounted transformers
No electric mechanism, unable to add distribution automation device;
No capacitor device, not conducive to reducing line loss;
Noise is higher than that of type III and type V stations, because type III and type V stations place transformers indoors to play a role in sound insulation;
In addition, the concentrated electromagnetic radiation of type III and type V stations is decomposed into multiple point radiation;
Due to the different civil engineering foundations of box transformers of different capacities, it is inconvenient to increase the capacity of box transformers;
When the box transformer is overloaded or the user increases the capacity, the civil engineering needs to be rebuilt, which causes a longer power outage time to increase the difficulty of the project.
Application of pad-mounted transformers
Home applications: Pad-mounted transformers can convert high-voltage grid voltage into low voltage that is suitable for home use, such as household appliances like TVs, refrigerators, washing machines, etc.
Commercial applications: Commercial areas usually have high requirements for floor space and aesthetics. Pad-mounted transformers are small in size and beautiful in appearance, and can be well integrated into the environment of commercial areas. At the same time, they provide reliable power supply to meet the power needs of commercial equipment. For example, pad-mounted transformers can convert high voltage into low voltage suitable for use by commercial equipment, such as air conditioners, computers, printers, etc.
Industrial applications: Although prefabricated substations are more widely used in industrial areas, pad-mounted transformers can also play a role in industrial areas. Especially for some industrial areas that have certain restrictions on floor space or require quick installation, pad-mounted transformers are a good choice.
Street lights and power distribution in communities and parks: Pad-mounted transformers are used for power control and distribution of street lights and related equipment. And they are also commonly used in power distribution in communities, parks and other places. It can adjust the brightness and working mode of street lights according to actual needs, improve lighting efficiency, and reduce energy consumption.
Is it safe to live near a pad-mounted transformer?
It is safe to live near a pad-mounted transformer. The electromagnetic induction energy generated by the pad-mounted transformer is very small and almost harmless to the human body. Its radiation level is much lower than that of the household appliances we use daily, such as mobile phones and televisions. In addition, the noise of the transformer is one of its main hazards, especially at night, the noise may affect the living environment. However, most residential transformers have separate transformer rooms, which can effectively shield the radiation hazards.
Although the radiation and noise hazards near the transformer are small, in order to ensure safety, it is recommended that a certain safety distance should be maintained between the transformer and the residence. It is generally believed that the safe distance between the transformer and the residence should be more than 10 meters. If the distance is too close, it may increase the noise and potential radiation effects.
