Qualitrol 118 Intelligent Transformer Monitor

Dry Type Transformer Monitor

Monitor temperature in up to three (3) Dry-Type transformer windings with the Qualitrol 118 Transformer Monitor. Accurate transformer temperature measurement with cooling system fan control, alarm, trip capability, and two (2) additional relays.

Operators can easily compare the winding with the highest temperature to pre-selected relay temperatures.

Front panel LED indication available for easy viewing.


  • Monitor up to three dry-type transformer windings
  • Built-in fan control, fan exerciser, alarming and trip functions
  • 0-1 or 4-20mA output for integration with SCADA systems
  • CE, UL and CSA certified


  • Optional MODBUS communication via RS-485

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The 118 series Intelligent Transformer Monitor is the right choice for all your Dry Type Transformer monitoring and control needs.

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