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Can you have high voltage and low amperage?
The power line has fairly low resistivity, so the total resistance is low, and so low voltage drop and low resistance yield low current, in accordance to Ohm’s law. In this way, it’s totally fine to have high voltage values and low current in power lines.
What does high voltage low amperage mean?
Amperage, or current, is the amount of water that is moved over the waterfall per second. If something has a high voltage but low current, then it would be like a stream going over a cliff.
Which motors are most affected by overvoltage?
Small motors tend to be more sensitive to overvoltage and saturation than do large motors. Single-phase motors tend to be more sensitive to overvoltage than do 3-phase motors. U-frame motors are less sensitive to overvoltage than are T-frames.
How are high voltages and low amps related?
The bigger the voltage, the higher the water falls before it is grounded. Amperage, or current, is the amount of water that is moved over the waterfall per second. If something has a high voltage but low current, then it would be like a stream going over a cliff.
What happens when the voltage of a motor goes low?
The amount of power the motor draws has a rough correlation to the voltage 2current (amps). Thus, when voltage gets low, the current must increase to provide the same amount of power. An increase in current is a danger to the motor only if that current exceeds the motor’s nameplate current rating.
Which is higher 208v or 208v induction motor?
The motor will draw higher amps, run hotter, and have lower efficiency. It should also not be confused with a motor rated at 208V with the requisite +/- 10% operating rate of that voltage.
How does voltage affect the life of an induction motor?
Low voltage requires the current to increase to maintain the power to drive the load. By operating at higher voltages that result in magnetization beyond the saturation point, the heat produced will increase, thus shortening the life of the insulation system.