Temperature Measurement


Infrared testing of electrical switchgear

June 2014 Temperature Measurement

For the majority of electrical switchgear, an annual infrared testing programme is the sole measure of electrical reliability. Infrared testing detects signs of overheating caused loose connections or unbalanced loads.

Delta T Alert

Delta T Alert wireless systems constantly monitor every critical electrical enclosure in a facility to complement existing electrical maintenance programmes, offering cost energy savings through the timely repair of faults. They bridge the gap between infrared scans by monitoring and reporting critical temperatures within electrical enclosures on a timed basis, effectively tracking temperatures and sending data for analysis and trending. If a critical issue arises, immediate notification allows for an appropriate corrective action before costly damage occurs.

The warnings that the system provides alert maintenance technicians to be warned of potential problems before they become serious, giving significant safety advantages and allowing timely maintenance.

Wireless and self-contained

Delta T Alert is a wireless, self-contained temperature-monitoring sensor that attaches to an electrical enclosure cover. The unit is simple to install and consists of two temperature sensors – one to monitor the electrical enclosure’s interior temperatures and the second to monitor the enclosure room’s ambient temperature. The sensors are then configured to collect data on a daily basis, at predetermined time intervals. This is the data that is transmitted wirelessly for analysis and trending.

IRISS IR Windows can also be equipped with Delta T Alert systems. When the temperature difference goes above the threshold level, or differs significantly from other enclosures, the system automatically warns a support engineer or maintenance technician. Once the necessary repair is complete, the system can be reenergised and a follow up inspection completed to ensure that everything is correct. The electrical enclosure can then be benchmarked and the system reset with a new baseline temperature delta if required.

Delta T Alert is not just for electrical distribution systems, it can also be used on motors, control systems and cabinets.

For more information contact R&C Instrumentation, 086 111 4217, info@randci.co.za, www.randci.co.za



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