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voltage sag effects on PLC and ASD....

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balzee

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Hi friends , while studying power quality i came across this,sensitive equipment PLC , ASD(Adjustable Speed Drives) which are widely used in
industrial automation are more prone to voltage sags and may often "trip" during a voltage sag ,could anyone please tell me what makes them
sensitive ,which device of equipment or device present in them causes the trip and why are they sensitive.......
 

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