JL-BWD3K130 series of dry-type transformer temperature controller is the lastest generation of intelligent products specially designed for the safe operation of dry-type transformers. It adopts single-chip microcomputer technology and uses.3 platinum resistors embedded in the transformer winding to detect the temperature rise of the dry-type transformer winding. It automatically controls the start and stop of the fan according to the temperature rise, ensuring the safe operation of the transformer.