## What is the efficiency of IE5 motor?

According to the comparative test data, the efficiency factors of the IE4 SRM and the IE5 SRM in rated mode are 85.6 and 89.5%, respectively. According to IEC 600034-30-2, to comply with energy efficiency class IE5, an electric motor of the given size and rating must have an efficiency factor over 86.4%.

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**What is the efficiency of IE1 motor?**

The IE1 motors lie in the IE1 class of the international efficiency standard. The output of the IE1 motors is 0.75kW to 355kW. The poles for the IE1 motors are 2, 4, 6, 8, 10 and 12.

**What is EEF in motor?**

For EEF class the efficiency testing will be conducted based on the IEC 60034-2-1:1996. Example for 7.5kW 4Pole, the efficiency is 90.5 % means, the motor is called as EFF1 Class as well as if the efficiency is 87% to 90.5% mean, the same motor is called as EFF2 class.

### How do you calculate motor efficiency?

You can use the relationship η = Po/Pi, where Po is output power, to determine efficiency in such cases, because Pi is given by I × V, or current times voltage, whereas Po is equal to torque τ times rotational velocity ω.

**What Is IE3 motor efficiency?**

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 IE1 IE2 IE3 IE4 in motors?**

IE1 (Standard Efficiency) IE2 (High Efficiency) IE3 (Premium Efficiency) IE4 (Super Premium Efficiency)

## What is IE4 motor efficiency?

IE4 represents the highest energy efficiency whilst IE1 represents the least energy efficiency. In other words, the higher the class number, the higher the motor efficiency. IE5 is to be incorporated in the next edition of IEC 60034-30-1, with a goal to obtain an energy loss reduction of 20% relative to IE4.

**What is IE1 IE2 IE3 IE4?**

IE1 – Standard Efficiency. IE2 – High Efficiency. IE3 – Premium Efficiency. IE4 – Super Premium Efficiency. Voltage.

**What is FL efficiency?**

Calculation of cost savings %FL = fraction of full load power motor is running at. Rate = electricity cost per kWh. ηstd = efficiency of standard motor. ηeff = efficiency of better motor.

### What is the formula for efficiency?

How Do You Calculate Efficiency? Efficiency can be expressed as a ratio by using the following formula: Output ÷ Input. Output, or work output, is the total amount of useful work completed without accounting for any waste and spoilage. You can also express efficiency as a percentage by multiplying the ratio by 100.

**What is the formula for calculating efficiency?**

The work efficiency formula is efficiency = output / input, and you can multiply the result by 100 to get work efficiency as a percentage.

**What is the IE2 and IE3?**

Voltage and frequency: IE3/YE3 series motor rated voltage is 380V, frequency is 50Hz, 3KW (4HP) and below Y connection, other power was delta connection (or as request). IE3=IP55, which improves the ability of the motor to dust and waterproof. Efficiency:IE3 average value is 91.5%, IE2 average value is 87%.