What is the Difference Between a Pad-Mounted Transformer and an Ordinary Oil-immersed Transformer?
02-19 2025 | By:
Overview of Pad-mounted Transformers
Pad-mounted transformers are power transformers that combine plug-in fuses, backup fuses, tap changers, loop load switches (2/4 loops), low-voltage distribution devices and other corresponding auxiliary equipment on the basis of ordinary oil-immersed transformers. Rated AC frequency 50Hz/60HZ, maximum operating voltage up to 35KV, capacity 100KVA-2000KVA. Pad-mounted transformers provide many benefits to users. This power transformer saves a lot of energy for owners and brings environmental benefits. Higher efficiency not only extends the life of pad-mounted transformers, but also saves costs for owners in the form of lower energy bills and reduced cost of ownership.
Compared with ordinary oil-immersed transformers, the main advantages of pad-mounted transformers are:
1. Safe and reliable: Pad-mounted transformers use efficient insulation protection and heat dissipation equipment, and the structure of the cable cabinet is reasonable, which can effectively ensure the safety and reliability of power equipment, and has strong overload capacity: overload of 2 times for 2 hours and overload of 1.6 times for 7 hours are allowed, but it does not affect the life of the pad-mounted transformer.
2. The elbow plug is used: it is very convenient to connect the high-voltage incoming cable, and it can be plugged in and out with power on.
3. Strong defense capability: Pad-mounted transformers have strong defense capabilities, which can effectively resist the instantaneous voltage peaks in power equipment and protect the equipment from damage. Double fuse protection is used: a. The plug-in fuse (BAY-o-NET) is a dual-sensitive fuse (temperature, current) to protect the secondary side of the box transformer 4. Short-circuit faults occur; b. The backup current limiting protection fuse (ELSP) protects the faults inside the box transformer and is used to protect the high-voltage side.
5. Long life: The pad-mounted transformers produced by Hengfengyou Electric use high-quality materials and high-tech production processes. They are durable and have a longer service life. The overall service life is higher than that of ordinary oil-immersed transformers.
6. Pad-mounted transformers are divided into terminal type and ring network type (one transformer can supply power to another transformer at the same time). The conversion is very convenient, which improves the power supply distance and reliability.
7. Energy saving and environmental protection: In the design and use of pad-mounted transformers, attention is paid to energy saving and environmental protection (FR3 environmentally friendly vegetable oil is now mostly used). It can ensure not only high energy efficiency, but also reduce energy waste and reduce environmental pollution.
The main disadvantages of pad-mounted transformers compared with ordinary oil-immersed transformers:
The appearance size and weight of power transformers with the same voltage and capacity are larger than ordinary oil-immersed transformers, and the cost is of course higher than ordinary oil-immersed transformers.
Application industries and countries of pad-mounted transformers:
Pad-mounted transformers have a large scope of application due to their high stability and reliability. The pad-mounted transformer industry mainly involves power transmission, distribution, industry, transportation, aerospace, communications and other fields. General purpose, industrial sites, electrical distribution rooms, basement distribution, manufacturing facilities, steel mills, offshore oil platforms, commercial, military, processing plants, utilities, public places, etc. Pad-mounted transformers are mainly used in North America, South America, Oceania, East Asia, Southeast Asia and other regions. The main countries include China, the United States, Canada, Japan, Honduras, Venezuela, Dominican Republic, Chile, Philippines, Australia and other countries and regions. Ztelecgroup has international standard certification and can provide perfect solutions for pad-mounted transformers.
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