What is IE motor rating?
Internationally, there is a standard which stipulates the energy efficiency of low voltage AC motors, namely the International Efficiency (IE). The purpose of which is to promote higher energy efficiency to reduce the energy consumption and the energy cost of low voltage AC motors.
What Is IE3 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 IE in induction 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.
What is IE 1 and IE2?
IE1 is the energy required to remove the first electron and IE2 is the energy required to remove the second electron.
What is IP55 protection in motors?
Standard industrial motors having a rating of IP55, normally considered ‘weatherproof’, are suitable for dry areas. The term ‘IP55’ is worth explaining. In simplified terms, the first number ‘5’ means ‘protection against dust’, and the second number ‘5’ means ‘protection against water’.
Is standard for HT motor?
Vertical Mounting HT Motor. Degrees of protection available conform to requirements of IEC 34-5, BS 4999-Part 20, 1972 and Indian Standard IS 4691 and other relevant Indian Standard Specifications. The standard degrees of protection are IP 54 & IP 55.
Is 12615 a standard motor?
This standard specifies the performance requirements and efficiency of three phase squirrel cage energy efficient induction motors. This standard was first published in 1989 and revised in 2004 to include two types of energy efficiency values.
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.
Which motor has highest efficiency?
Tests carried out on a 44 megawatt 6-pole synchronous ABB motor shortly before delivery showed an efficiency 0.25 percent greater than the 98.8 percent stipulated in the contract, resulting in the world record for electric motor efficiency.