Consider one transformer has been installed around 40 years back but it meets all necessary clearances and maintenance standards. After careful observations, it was concluded by experts that transformer is still in proper condition as required.
The unit was operated at high temperature but surface of transformer was not really hot. Obviously, this transformer was less energy efficient than current ones but only energy efficient characteristics is enough to consider for replacement for old transformers. Do you need to consider anything else too?
Each transformer has certain losses associated with it. Few transformers have larger losses while others have negligible. You have to pick the best product that suits your requirements the most. For this purpose, energy saving light transformers has to be tested on different temperature and loadings. One performance sheet is prepared by team that is reviewed by clients for final decision.
The modern transformer units are more protected and efficient than traditional ones. Energy losses have also minimized with continuous practice and efforts of expert team. The losses are generally calculated in the form of heat that is cooled by HVAC system further. Fans, chillers or other utilities are also added to the product to balance heat inside transformers. TO know more on transformers and to get energy efficient products, it is always better to discuss with leading manufacturers or suppliers in the transformer industry.
When transformers are installed indoor then it needs proper enclosures for best protection schemes. For indoor installation, you are advised to use aluminum windings because space is not an issue and aluminum windings are generally more cost effective than other materials. Further, transformer should also be sized properly to avoid significant losses and heat releases.
You should also consider high current protection for energy saving light transformers in selective coordination with other components. The transformers should be reviewed from different prospects – its damage curve and transformer inrush. SO this is the right time to move out in transformer world and check for highly efficient and protected energy efficient transformers.