Wenzhou Enboli Electric Co.,Ltd. was established in 1998,and specialized in manufacturing series of power transformers,auto recloser,vcb circuit breakers,etc.

Many thanks for lots of experienced engineers and the best supported from the customers,our products have already widely used in everycorn in the wordwide,especially in the African market.

In order to accordance with the rapid-growthing demands in the african market, we also establish a sub-factory there ,and built a strong distribution net in this land.

The main difference is that oil-immersed transformers use mineral oil for cooling and insulation, while dry-type transformers use air or solid insulation. Oil-immersed transformers offer superior cooling and are suitable for high-voltage, high-capacity applications like substations and power plants, whereas dry-type transformers are safer, more environmentally friendly, and ideal for indoor use in buildings and data centers where fire safety is paramount. 

Oil-Immersed Transformers 

Cooling and Insulation: 

• Utilize mineral oil, which provides excellent cooling and insulation properties. 

• Location: 

• Typically used in outdoor applications such as substations and power distribution networks. 

• Capacity: 

• Capable of handling higher power ratings and voltages, making them suitable for large-scale applications. 

• Maintenance: 

• Require more maintenance, including regular oil testing and potential filtration or repair of leaks. 

• Safety: 

• Pose a fire hazard due to the flammable nature of the insulating oil. 

• Dry-Type Transformers 

• Cooling and Insulation: Use air or epoxy resin for cooling and insulation, making them fire-resistant and environmentally friendly. 

• Location: Primarily used indoors in locations like buildings, hospitals, and data centers where fire safety is a top priority. 

• Capacity: Generally used for medium and smaller voltage and power ratings, though higher-capacity units exist. 

• Maintenance: Low-maintenance as they eliminate the need for oil handling. 

• Safety: Safer for indoor use due to the absence of flammable liquids. 

The difference between two types of transformer oil:

Mineral oil is further classified into two categories: naphthenic and paraffinic. 

Known for its high solubility and stability, naphthenic oil has a low pour point, making it suitable for use in cold environments. However, it has a higher tendency to form sludge compared to paraffinic oil.

Application: Fuse links are generally used in low to medium voltage applications,

 while fuse cutouts are used in high-voltage distribution systems.

 2. Breaking capacity: Fuse cutouts have a higher breaking capacity than fuse links, 

making them ideal for high-voltage applications where high fault currents can occur

Open Top (OT) and Flat Rack (FR) containers are both specialized types designed for oversized or awkwardly shaped cargo, but they differ in their construction and capabilities.

 OT containers have a removable roof (often a tarpaulin), allowing for top-loading, while FR containers have no roof or sides, essentially being a flat platform with end walls that may be collapsible. 

Here's a more detailed breakdown:

Open Top (OT) Containers:

• Construction: Similar to standard dry containers, but with a removable top, typically covered by a tarpaulin. 

• Use Cases: Ideal for cargo that is too tall to fit through standard container doors or needs to be loaded from the top with a crane. 

• Examples: Machinery, timber, scrap metal. 

• Stackable: Generally stackable due to their corner castings. 

• Flat Rack (FR) Containers:

• Construction: A steel frame with a floor and end walls (which may be collapsible). 

• Use Cases: Suitable for cargo that is over-width, over-length, or over-height, including heavy or bulky items. 

• Examples: Heavy machinery, vehicles, steel coils, and other oversized items. 

• Not Stackable (when loaded): Due to the lack of a fixed roof, they cannot be stacked when loaded. 

• Key Differences:

• Roof:

  OT containers have a removable roof, while FR containers have no roof at all. 

• Side Walls:

• OT containers have side walls, while FR containers typically do not. 

• Stackability:

• OT containers are generally stackable, while FR containers are not when loaded. 

• Loading:

• Both allow for top-loading, but OT containers also allow for loading through the sides (like standard containers). 

• Protection:

• OT containers offer some protection from the elements with the tarpaulin, while FR containers offer virtually none. 

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

Polymer and porcelain isolator switches differ primarily in material composition, weight, and resistance to environmental factors. 

Polymer insulators are lighter and more resistant to damage and pollution, while porcelain insulators offer high mechanical strength and resistance to harsh weather. 

Polymer Isolator Switches:

• Material: Typically made of silicone rubber molded over a fiberglass core, offering flexibility and durability. 

• Weight: Significantly lighter than porcelain, making them easier to handle and install. 

• Durability: More resistant to impact, vibration, and breakage compared to porcelain. 

• Pollution Performance: Superior in polluted environments due to the hydrophobic properties of silicone rubber, which repels water and contaminants.

• Maintenance: Require less maintenance due to self-cleaning capabilities and resistance to dirt buildup. 

• Cost: Can be more expensive than porcelain insulators. 

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

• Pad mounted transformer, single phase pad mounted transformer Liquid transformer Dry type transformer Surge arrester Lightning arrester Distribution transformer Power transformer Paid mounted transformer High voltage switchgear Low voltage switchgear Skid mounted transformer Mother coil Silicone steel plate Single phase transformer Three phases transformer lightning arrestor lightning arrester

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What's the difference between 50 and 60 Hz?

60Hz systems tend to be more efficient for longer distance transmission and are better suited for high-power applications, 

while 50Hz systems are more suited for low-power, local distribution

What is the difference between a surge arrester and a lightning arrestor?

Surge arrester intercepts the surges and sends the extra unwanted energy to the ground wire while lightning arrester

 diverts the energy flow to the ground through the arrester to the ground. Surge arrester can be used as a lighting arrester while a lighting arrester can't be used as a surge arrester.