The TECSYSTEM T154 is an electronic microcontroller-based unit specifically designed for monitoring and controlling the temperature of MV dry-type and cast resin transformers. It is considered an industry standard for this application due to its high resistance to electromagnetic interference and user-friendly interface.

Made in: Italy 

• Sensor Inputs: It features 4 Pt100 inputs: three for the transformer phases and a fourth for monitoring the core or ambient temperature.
• Relay Outputs: Equipped with 4 dry contact relay outputs for specific functions:
  • ALARM: Early warning signal for high temperatures.
  • TRIP: Emergency shutdown signal to protect the transformer.
  • FAULT: Indicates internal malfunction or sensor issues.
  • FAN: Automatically starts the ventilation system for cooling.
• Power Supply: Features a universal power supply compatible with 24 to 240 Vac-Vdc, regardless of polarity.
• Display: Uses a dual 3-digit LED display to show temperatures, diagnostic messages, and active channels.
• Data Management: Modern versions (like the T154 WS ED25) include data logging capabilities and can feature Wi-Fi interfaces for remote monitoring via a web server