What is IE1 & IE2 of motor?
IE is “International Efficiency” with class 1, 2 & 3 i.e. IE1 & IE2 & IE3. … Over 70% of all electrical energy consumed in industries is used by the motors, hence improving the efficiency of electric motors can save energy as well as operating cost, which is more than its purchase cost.
Which is better IE2 or IE3?
Efficiency:IE3 average value is 91.5%, IE2 average value is 87%. Note: The above all are calculated value of electromagnetism. From the above data, we can see that: one 7.5KW motor which has Grade 1 energy efficiency can save 892 degree than Grade 2.
What is a high efficiency motor?
High-efficiency motors are generally up to 8% more efficient than standard models. To qualify as high efficiency, a motor must meet or exceed the efficiency levels specified by the National. Electrical Manufacturing Association’s (NEMA) MG-1 standard for motors and generators.
Why is IE2 greater than IE1?
ionisation energy or ionisation enthalpy is the enrgy required to remove the most loosely bound electron from an isolated gaseous atom . and IE1 , IE2 , these are the removal of first as well as second electron from an atom . … the second ionisation energy is always more than that of first ionisation energy .
What is IE1 in chemistry?
Element. Electron Configuration. First Ionization Energy, IE1.
Which motor has highest efficiency?
ABB recently set the world record for electrical synchronous motor efficiency. During factory acceptance tests (FATs) carried out with the customer present, we recorded a result of 99.05% full load efficiency on a 44 megawatt, 6-pole, synchronous motor.
What is the efficiency of IE4 motors?
For a 0.75 kW (1 hp motor) the efficiency level for an 1800 RPM Super Premium Efficiency motor is 85.5% versus 83.5% for a Premium Efficiency motor. For a 75 kW (100 hp) motor, the Super Premium Efficiency performance requirement is 96.2% versus 95.4% for a Premium Efficiency motor.
What is EFF1 and EFF2?
The EFF has 3 classes, i.e. EFF1, EFF2 and EFF3 respectively. EFF1 is the most energy efficient, while EFF3 is the least energy efficient. In other words, the lower class number represents the higher motor efficiency. … IE4 represents the highest energy efficiency whilst IE1 represents the least energy efficiency.
How do you calculate motor efficiency?
Typical Motor Efficiency Values: Efficiency is simply output (useful) power divided by input power, with the difference being losses due to imperfections in design and other inevitabilities.