How to translate Another factor that can affect both motor and total efficiency
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Another factor that can affect both mechanical efficiency and overall efficiency is motor loading. The peak efficiency of a typical three-phase motor is achieved at around 75–80% of its rated load; however, it maintains a relatively steady efficiency level between 60% and 100% when operating at its rated speed. When the load drops below 60%, efficiency begins to decline, and it drops sharply around 40%. This is not a problem in typical applications involving pumps that operate at a constant speed, as long as the horsepower required at minimum flow is at least 60% of the motor’s rated horsepower.
Dear teachers, what do 60% and 100% refer to? What are those percentages of 60 and 100? Is it the load or the rated speed?
Another factor that can affect the efficiency of the motor and overall system efficiency is the load on the motor. The peak efficiency of a typical three-phase motor occurs at around 75–80% of its rated load, but it maintains a relatively flat efficiency curve between 60% and 100% when operating at its rated speed. When the load is below 60%, efficiency begins to drop rapidly, decreasing by about 40%. In a typical case, this isn’t a problem; in constant-flow pump applications, HP needs to operate at at least 60% of its rated capacity to meet the minimum flow requirement.
Another factor that affects the motor and overall efficiency is the load on the motor; the highest efficiency is achieved when the load on a three-phase motor is between 75% and 80% of its rated value. However, the motor operates with stable efficiency when the load is between 60% and 100% of its rated value. When the load drops below 60%, the efficiency drops sharply around 40%. This is not a problem for a classic, continuously operating pump. Because when operating at the lowest flow rate, the HP load is at least 60%