technical NOTES

Application Qty.

Motor

Rating

Kw

Pole

OEM’s IE4 Vs IE3 Saving calculations

IE4 IE3 SavedKW Saved Unit Savings in INR

240kW4P 1 240 4 96.70% 96.00% 1.81 11,825 59,124

260kW4P 2 260 4 96.70% 96.00% 3.92 25,620 1,28,101

230kW4P 1 230 4 96.70% 96.00% 1.73 11,332 56,660

37kW6P 2 37 6 94.50% 93.30% 1.01 6,581 32,904

1.1kW6P 1 1.1 6 84.50% 81.00% 0.06 368 1,838

0.37kW8P 3 0.37 8 74.30% 69.30% 0.11 704 3,521

0.75kW8P 3 0.75 8 78.40% 75.00% 0.13 850 4,250

2.2kW8P 1 2.2 8 84.50% 81.90% 0.08 540 2,700

15kW6P 2 15 6 92.90% 91.20% 0.6 3,933 19,666

165kW4P 1 165 4 96.70% 96.00% 1.24 8,129 40,647

230kW8P 1 230 8 95.40% 94.60% 2.04 13,322 66,608

2.2kW2P 1 2.2 2 88.00% 85.90% 0.06 399 1,997

156kW2P 4 156 2 96.30% 95.60% 4.74 31,001 1,55,006

1.5kW4P 1 1.5 4 88.20% 85.30% 0.06 378 1,889

18.5kW2P 2 18.5 2 93.70% 92.40% 0.56 3,630 18,150

0.17kW4P 2 0.17 4 77.90% 73.50% 0.03 171 854

8.2 Conclusion:

• Recently, we have installed IE3 LT motors in our all the three cement projects.
  The feedback obtained from sites is very satisfactory. The achievement of best
  specific power consumption in recently executed project has also contribution
  of the Premiere efficient LT motors


• At present, M/s Siemens is manufacturing IE4 efficiency motor range from 1.1
  KW to 400 KW, M/s ABB is manufacturing from 7.5 KW onwards up to 400 KW,
  M/s Bharat Bijlee from 1.1 KW to 37 KW only.


• Based on present availability of IE4 range of motors & expected payback of 24
  months on the basis of motor rating for 9500 TPD plant`s, we propose to go
  with super premium LT motors from 1.1 KW rating and above & for rating lower
  than 1.1 KW, we should continue with IE 3 for future cement projects.