HeatTag Description

Overview

The HeatTag is a wireless sensor for early detection of overheating wire connections or overheating cables.
The HeatTag sensor helps prevent electrical distribution switchboards from being damaged by means of analyzing gas and micro-particles in the air of the switchboard and sending alerts before any smoke or insulator browning.

Features

The HeatTag sensor includes the following features:

3 levels of alert according to the criticality of the detected situation
11 levels of air quality index (0 to 10)
Analysis of gas and micro-particles emitted by cable sheaths when overheating
Measurement of temperature and humidity in the switchboard
Self-diagnostics
Communication with Schneider Electric EcoStruxure™ panel servers or gateways
Integration in EcoStruxure™ solutions

Air Quality Index

The HeatTag sensor provides an air quality index, ranging from 0 (good) to 10, and displays the air quality evolution trend in a table.
Air quality index from 0 to 9 is provided for information.

An alert is triggered when the air quality index is equal to 10.

Overheating Detection

The HeatTag sensor does not replace the fire protection devices of the building.

WARNING
HAZARD OF FIRE Do not use the HeatTag sensor as a safety device. Do not disable the other monitoring and safety devices of the equipment. Failure to follow these instructions can result in death, serious injury, or equipment damage.

When the HeatTag sensor has detected an abnormal overheating of the cable sheath in the switchboard (quality index equal to 10), it triggers an alert. Overheating can be caused by:

one or several loose connections (too high contact resistance).
an incorrectly sized cable compared to the rated current.
overload not detected by the protective equipment.

Alerts are triggered with three criticality levels:

Low level: a cable is slowly overheating in the installation, you must plan a maintenance visit of the installation.
Medium level: a cable is overheating in the installation, you must check quickly the installation.
High level: a cable is overheating in a very short time, you must check the installation immediately.

The operation LED blinks slowly orange when the HeatTag sensor triggers an alert to the panel server or gateway.

NOTE: The detection and communication functions of the HeatTag sensor can be disturbed depending on its installation and use in the equipment.

Temperature and Humidity

The HeatTag sensor measures the ambient temperature and humidity. These values are refreshed every 60 s.

The transmission period is 60 s and can be increased by the system in the event of high wireless data traffic.

Self-Diagnostics

The HeatTag sensor carries out two types of diagnostics:

An alert is triggered when the HeatTag sensor is out of service. In this case it does not report any measurements. The alert remains latched until it is reset.
An alert is triggered when the fan is clogging (see Troubleshooting). In this case the HeatTag sensor continues to analyze gas and micro-particles, to trigger air alerts, and to report measurements.

Operation Mode

After switching on the HeatTag power supply:

The HeatTag sensor is in test mode for 30 minutes. It can be tested with the HeatTag Tester (see Test With the HeatTag Tester).
After 30 minutes the HeatTag sensor is in auto-learning mode. It can trigger the first alert. Testing the HeatTag sensor with the HeatTag Tester is not allowed to avoid disturbance during the HeatTag environment-learning period (8 hours).
After 8 hours the HeatTag sensor has learned its background environment. That is, the HeatTag sensor is in normal operation after a total duration of 8h30.

Each time the HeatTag sensor is powered on, 30 minutes and 8 hours sequences are repeated.