Unipower Motor Load Monitors have been used in industrial motor driven applications for over 30 years. They are extensively used in Water & Waste, Pharmaceutical, Petro & Agro-Chemical and many other industrial applications to protect machines from damage caused when a motor drives against an abnormal load event such as a jam, blockage, or dry-run. 
The motor effectively becomes a sensor to detect the state of the equipment it’s driving. UNIPOWER Load Monitors calculate Watts/Kilo Watts (kW), the only electrical measurement of work that is linear with and proportional to load, using the formula: P=√3×I×V×COSØ 
Motor current is not suitable as it does not vary with load in all circumstances but does vary with site voltage causing nuisance tripping. 
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