The New IS: 12615
The New IS: 12615 are based on the International Standard IEC 60034-30 (2008) which defines New Efficiency Classification for single speed, three phases, induction motors. The new IS:12615 covers single speed, three-phase, 50Hz, cage induction motors that:
- Have rated voltage ≤1000V;
- Have a rated output 0.37kW ≤ P N ≤ 375kW;
- Have either 2, 4 or 6 poles;
- Meet frame size to output relation as stipulated in IS:1231 (for outputs covered by IS:1231);
- Are rated on the basis of either duty type S1 (continuous duty) or S3 (intermittent periodic duty) with rated cyclic duration factor of 80% or higher;
- Are capable of operating direct on-line;
- Are designed for operation on virtually sinusoidal and balanced voltage conditions
- Designed for an ambient temperature not exceeding 40°C and altitude not exceeding 1000m;
- Have degree of protection IP44 or superior;
- Have method of cooling IC411 in accordance with IS 6362 / IEC 60034-6;
- Have service factor not exceeding 1.0.
The Efficiency classes defined are:
IE1 – Standard Efficiency
IE2 – High Efficiency
IE3 – Premium Efficiency
The New IS:12615 also stipulates that for motors to be classified as “Energy Efficient”, these must meet at least IE2 efficiency values.
