HotWatcher in action displays an actual demonstration of how HotWatcher works. Being shown is a bolted copper lug electrical connection typical of what is found in the field. One HotWatcher high voltage detection device has been installed on the visible side of the connection. A voltage temperature sensor is attached to the copper lug, monitors the temperature of the connection and sends it to the digital meter. For the demonstration, a current will be sent through the purposely loosened connection to heat it up and show the effect on HotWatcher.
Copyright 2012: HotWatcher. Bus Bar Protection. All rights reserved.
Power Interruption Protection
Image 1 shows the HotWatcher installed on the connection at ambient temperature and the starting color.
Image 2 shows the HotWatcher at a temperature of 103.7 deg F- no color change
Image 3 shows the HotWatcher at a temperature of 155.6 deg F and the outer band is just beginning to change color.
Image 4 shows the HotWatcher color fully changed to a dark band (hot spot) at 186.5 deg F, 14 seconds later- indicating a hot connection exists.
Image 5 shows the HotWatcher color remaining dark when the system has been shut down and the connection has dropped back to ambient temperature. HotWatcher will remain with the dark band permanently whether the power is on or off to warn personnel that a fault has been present.
At this point HotWatcher has done its job and provided power interruption protection. It indicates to personnel that the connection needs to be cleaned, retightened or replaced before further power surge damage or lost time is incurred. The old HotWatcher is discarded and a new one is installed. This patented device offers great bus bar protection.
