A Cast Resin Transformer is a dry-type transformer where epoxy resin is used to encapsulate the windings and core of the device. The purpose of doing so is to protect the core from moisture, chemicals, and other environmental factors that can damage the core over time. The device is known for its safety, reliability, and compact build. It is highly sought-after for a variety of applications, particularly for low to medium-range power needs like residential areas, small commercial and industrial settings, and public utility.
Mentioned below are some of its common characteristics and features:
- Both the primary and secondary windings are encapsulated in epoxy resin, which is fire-resistant and can protect the core from elements of nature for an extended period.
- They do not use oil for insulation, making them safe from fire hazards. It also eliminates the need for maintenance associated with having oil-based insulants.
- Epoxy also provides excellent insulation from electricity, minimising the risk of short circuits and other forms of electrical hazards.
- The materials used to build the transformer are of top quality, allowing it to withstand extreme operating conditions along with damage dealt with by vibration or impact.
- Cast Resin Transformers have fewer working parts compared to older transformer variants. This means it required minimal maintenance compared to the oil-filled variants. All one needs to do is stick to the dates assigned for routine checks.
- The encapsulated winding ensures that the core is free from corrosion or rust for an extended period. This makes the device suitable for humid and corrosive environments without any additional protection.
- The smaller size of the transformer means that it can be used in smaller spaces with minimal effort at installation work.
- These transformer variants are usually quieter compared to oil-based variants, making them suitable for locations where decibel levels need to be minimal.
Common Uses:
- It is commonly found in commercial buildings such as hospitals, schools, and offices because of its compact size and low fire risk.
- They are suitable for industrial settings where exposure to dust, moisture and chemicals is a challenge.
- They are widely used in renewable energy settings due to their high efficiency and ability to maintain voltage levels despite fluctuations.
- Ideal for residential areas where power consumption levels are much lower and require stable transmission of electricity.
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