Utility power plant generators are usually designed for a power factor (PF) of .8 to .9. If demand-side PF is lower than the designed PF, the generator current will rise above the equipment's rated ...

Variable speed drives (VSDs), sometimes also known as variable frequency drives, are electronic devices used to regulate the speed of an ac induction motor. Electric motors consume approximately 25% ...

Single- and three-phase alternating current (AC) motor speed can be controlled by controlling the frequency of the voltage coming to it. Motor speed has a lot to do with the capacity of refrigeration ...

The SMVector drive has an input voltage range from 120-Vac, 1-phase to 600-Vac, 3-phase and has four modes of operation: V/Hz, enhanced V/Hz, vector speed, and torque. It has a power range up to 25 hp ...

A mini-split is a small, ductless, split-system air conditioner "Variable speed” refers to how the fan motor operates for the air handler With “zoning,” you can control the temperatures in individual ...

QUESTION: I’ve been told that some technicians don’t like variable speed air conditioners due to their high maintenance costs. Is that true? ANSWER: A variable speed AC runs at a lower speed for ...

Finland-based Danfoss Drives is supplying variable-speed AC drives for the propulsion systems of the Finnish Navy’s four Pohjanmaa-class multi-role corvettes. Part of the Finnish Defense Squadron 2020 ...