The New IS:12615 : 2011 : is based on the international standard IEC 60034-30 (2008) which defines New efficiency classification for single speed, three phase, induction motors. The new IS: 12615 covers single speed, three phase, 50 Hz, cage induction motors that:

– Have rated voltage 1000V
– Have a rate output 0.37 KW to 375 KW
– Have either 2,4, or 6 poles;
– Meet frame size to output relation as stipulated in IS: 1231c(for outputs covered by IS:1231);
– Are rated on the basis of either duty S1 (continuous duty) or S3 (intermittent periodic duty) with rated cyclic duration factor of 80% or higher
– Are capable of opening direct on-line
– Are designed for operation on virtually sinusoidal and balanced voltage conditions as defined in 7.2.1 of IS/IEC 60034-1;
– Designed for an ambient temperature not exceeding 40°C and altitude not exceeding 1000m)
– Have degree of protection IP 44 or superior
– The efficiciency classed 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.

Output 0.37Kw to 375 kW

Frame 71 to 355L

Pole 2,4,6

Voltage 415 +/- 10%

Frequency 50 Hz +/- 10%