Model 2243A – Combined OTI-WTI scanner based on PT-100 sensor

This scheme is used to Indicate Oil & Winding Temperature of the oil – immersed transformers. Relays are provided for Alarm, Trip and Cooler functions and operate as per the set value. 4-20mA DC signal outputs are provided separately for OTI & WTI for Remote Indication or SCADA purpose. The System has the capability to store the maximum temperature attained.