Dry transformer is a transformer without added insulating fluid, which has exposed windings and is encased. Compared with oil-immersed transformer, dry transformer is less likely to overheat and smoke, which means it is less likely to burn out during operation.
Dry transformer uses epoxy-encapsulated coils that is heat-resistant and corrosion-resistant.
Dry transformer does not require lubricants or oil to operate, nor does it require water cooling to dissipate heat, but may require air cooling or other cooling methods. Dry transformer is not only more environmentally friendly than oil-immersed transformers, but also less expensive because dry transformer requires less maintenance than oil-immersed transformer.
A dry transformer is a transformer used to change AC voltage. It does not contain oil, so it is more efficient than oil-immersed transformer. In addition, dry transformer is able to withstand higher voltages without overheating or melting.
When using dry transformer, it's necessary to keep the equipment well ventilated and regularly clean up dust accumulation in the industrial environment to prevent dust and debris from clogging the heat sink and causing the dry transformer to lose efficiency. At the same time, the windings and cooling pipes should be cleaned regularly.
We should monitor the ambient humidity regularly and accurately. Although dry transformer is more resistant to high temperatures than oil-immersed transformers, continuous exposure to humid environments will reduce insulation performance. In addition, please pay attention to the torque specifications of electrical connectors, because looseness caused by vibration can form resistance hot spots. Accurately record the load curve, because seemingly controllable periodic overloads in the short term will cumulatively shorten the insulation life.
