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Advanced Power Technologies, LLC (APT) is a company based in Randolph, New Jersey, that produces monitoring equipment for the Electric power industry. The company was founded in May 1999 by Gary R. Hoffman, who continues to serve as president of the company today. APT designs and manufactures electronic monitors that perform Condition Monitoring on electric power transformers.

APT's products monitor various quantities on power transformers to detect and alarm for operating conditions that may lead to damage or failure of the transformer being monitored. APT's products measure Transformer oil temperature, transformer winding temperature, Tap changer temperature, load tap changer position, Geomagnetically induced current, and load current. APT's products also control transformer cooling systems to prevent over-heating of the transformer.

Patents
The founder of APT, Gary Hoffman, holds a number of patents for the company related to the monitoring of electric power transformers: