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Wireless Thermal Monitoring

Effectively Monitor the Temperature of your Switchgear for Long Term, Cost-Effective Reliability and Safety

Wireless Thermal Monitoring Solutions for Low and Medium Voltage Switchgear
  • Temperature sensors installed in equipment interface with monitoring units to remotely report overheating for proactive planning and minimize downtime.
  • Designed for continuous monitoring of ambient bus and power connections through measurement of wireless temperature sensors that require NO power or wiring.
  • User-configurable alarms, both limit and differential via optional HMI monitoring system.
  • Industry standard Modbus RTU communications to customer SCADA


Why Measure Temperature
  • Bus joints and power connections are subject to overheating due to overload, corrosion, loose connections and environmental conditions
  • Increase in heat will intensify until complete thermal failure of the connection or nearby insulation
  • Next generation continuous Thermal Monitoring in lieu of traditional IR windows and periodic thermal imaging.


How it Works

Temperature sensors are powered by RF signals through the Thermal Monitoring Module and antenna Temperature Interface Module.

The Thermal Monitoring Module provides the measurements taken from the sensors and immediately makes available the data through industry standard communication protocols for critical equipment monitoring.


Temperature Measurement Methods


Traditional Approach

Periodic, 1 or 2 times per year

Unable to measure under boots and locate all bus joints and connections

Requires engineering personnel

Dangerous if measuring with live energization of switchgear requiring high level PPE


The IEM Approach

Safety: Directly mounted wireless sensors to critical measuring points while ensuring all safety requirements are maintained.

No Maintenance: 20+ year life expectancy

Easy Installation: Sensors do not require “line of sight” and can be mounted under insulation boots or tape

Reliability:  Sensors designed to withstand harsh environments



Partial Discharge Sensor / Interface Module

Humidity Sensors

Thermal Monitoring HMI

Benefits of Utilizing Wireless Thermal Monitoring


  • Predict potential problem areas
  • Prevent catastrophic failure
  • Improve response time
  • Monitor areas with limited access
  • Keep personnel and facility safe


  • Optimize bus performance
  • Quick identification of issues
  • Proactive planning
  • Avoid downtime


  • Lower maintenance costs
  • Minimize downtime
  • Extend bus life
  • Increased ROI