Dry type transformers have a wide range of applications. They can be used in distribution systems, combined heat and power plants and as rectifiers be used.
Dry-type transformers are designed to be more resistant to environmental conditions, such as high altitdue, dust and moisture, compared to oil-immersed transformers. However, high levels of dust and moisture can still impact the performance and lifespan of dry-type transformers.
In applications where dust and moisture levels are high, it is important to consider the environmental specifications of the dry-type transformer and to install the transformer in suitably IP rated enclosures. Some dry-type transformers may have additional features or coatings that make them more resistant to dust and moisture, but these can vary between manufacturers and models.
Additionally, it is important to ensure that the dry-type transformer is installed and maintained properly to reduce the risk of damage or failure due to dust and moisture. This may include providing adequate ventilation to dissipate heat and prevent overheating, and regularly cleaning the transformer to prevent dust and moisture buildup.
As these transformers do not contain any flammable liquids and are made of materials which can extinguish themselves if necessary, a high level of environmental safety is guaranteed. In addition, they do not emit any toxic gases and are characterised gases and are characterised by low electromagnetic emissions.
Advantages of cast resin transformers
Our dry-type transformers comply with special international guidelines. They are categorised in classes E2, C4 and F1 and can be used at high altitudes, in high humidity and under other difficult conditions. Environmentally friendly thanks to non-flammable and self-extinguishing materials. Free from the emission of toxic gases, low noise and with low electromagnetic pollution.
AVAILABILITY AND COST
LIFETIME AND DURABILITY
ECONOMIC
SAFE
The standard protection levels are defined by IP (Ingress Protection) Ratings. For these environments, you need a high IP rating.
| IP Rating Code | Protection Against Solids (1st Digit) | Protection Against Liquids (2nd Digit) | Ideal For Environments With... |
|---|---|---|---|
| IP00 (Open) | No protection | No protection | Not suitable. Clean, dry, electrical rooms only. |
| IP20 (Standard) | Finger-sized objects >12.5mm | Dripping water (15° tilt) | Not suitable. Indoor areas with minimal dust and no moisture. |
| IP21 or IP22 | >12.5mm | Dripping water (vertical & 15° tilt) | Light moisture, but not dust. |
| IP44 | >1mm wires & tools | Water splashes from all directions | Good for many harsh environments. Protects against most dust and water splashes. |
| IP54 | Dust Protected (limited ingress) | Water splashes from all directions | Very common choice. Excellent for high dust and moisture. |
| IP55 | Dust Protected | Low-pressure water jets from any direction | Excellent choice. For severe conditions with wash-down possibilities. |
| IP56 / IP65 | Dust Tight | Powerful water jets / low-pressure jets (IP65) |
Overall, three phase dry-type power transformers are a suitable solution for many applications with moderate levels of dust and moisture, but it is important to consider the specific conditions of the application and consult with a competent company who specialises in the supply of dry-type transformers.
