Protective relays and predictive devices

Eaton’s Transformer Temperature Controllers offer built-in monitoring and logging functions to help users better understand and anticipate potential issues. Also, the temperature trending feature allows users to collect and analyze data, resulting in increased system life and uptime and decreased maintenance and overall costs.

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Overview Models Resources

Increased uptime

Preventive maintenance

Temperature trending

Increased system life

Core features

The TC-100 has additional built in monitoring functions and logging functions to help you shed some light on the unknowns of the operation of your transformer.
Temperature trending lets you understand the hour of the day that the transformer runs hotter, and modify its loading to extend the life of your transformer; logging information lets you restore the operation of your system faster, by letting you correlate tripping and alarming events to the overall conditions of your system; and fan wear information can be used to perform preventive maintenance to increase the uptime in your transformers.

Temperature controller order information by catalog number

Three models of the transformer temperature controller (TC) are available; the TC-50, the TC-50 Modbus, and the TC-100. The TC-100 includes Modbus and has advanced features for discrete inputs, monitoring, and data logging.

All models have a common appearance but vary in functionality. The functionality described in Section 4.1.2 -Operating the TC Manually, and Section 4.2 -Local Operation, apply to all models unless otherwise noted in a heading or the text.

temperature controller relay description of catalog numbers chart

Understand your equipment life span

Transformer temperature controllers can monitor up to three ventilated dry-type transformer windings and 1 ambient temperature. The controllers operate relays by comparing the highest winding temperature to stored set point temperatures, and displays four thermocouple inputs as well as the stored maximum temperature and its associated winding.

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Download Links

Catalogs

Metering devices, protective relays, software and connectivity catalog, Volume 3, Tab 9 - CA08100004E

This is the catalog describing all meters, relays and connection options.

(PDF 10 MB , 28/02/2025)

Installation instructions

Transformer Temperature Controllers

(PDF 4 MB , 25/03/2021)

Product specification guides

TC100 Transformer temper controller for dry type transformers

(PDF 643 KB , 18/05/2021)

Software, firmware, and applications

TC-50 transform controller software

(7Z 214 MB , 14/10/2021)

Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.

Eaton temperature controller