Standard Motor Catalog

Section TR Technical Reference Guide

IEC EFFICIENCY LEVELS More information can be found out, when IEC publishes and releases the IEC Standard IEC 60034-30.

NOTE: Table 34 indicates the Nominal values being proposed for Premium Efficiency (IE3) levels. The values could be changed when the standard is released by IEC.

Table 34: IEC Efficiency Levels for IE1, IE2, IE3 and IE4 for 50 HZ

% Efficiency

Motor Rating

2 Pole

4 Pole

6 Pole

kW IE1 IE4 0.75 72.1 77.4 80.7 84.9 72.1 79.6 82.5 85.6 70.0 75.9 78.9 83.1 1.1 75.0 79.6 82.7 86.7 75.0 81.4 84.1 87.4 72.9 78.1 81.0 84.1 1.5 77.2 81.3 84.2 87.5 77.2 82.8 85.3 88.1 75.2 79.8 82.5 86.2 2.2 79.7 83.2 85.9 89.1 79.7 84.3 86.7 89.7 77.7 81.8 84.3 87.1 3 81.5 84.6 87.1 89.7 81.5 85.5 87.7 90.3 79.7 83.3 85.6 88.7 4 83.1 85.8 88.1 90.3 83.1 86.6 88.6 90.9 81.4 84.6 86.8 89.5 5.5 84.7 87.0 89.2 91.584.7 87.7 89.6 92.1 83.1 86.0 88.0 90.2 7.5 86.0 88.1 90.1 92.1 86.0 88.7 90.4 92.6 84.7 87.2 89.1 91.5 11 87.6 89.4 91.2 93.0 87.6 89.8 91.4 93.6 86.4 88.7 90.3 92.5 15 88.7 90.3 91.9 93.4 88.7 90.6 92.1 94.0 87.7 89.7 91.2 93.1 18.5 89.3 90.9 92.4 93.8 89.3 91.2 92.6 94.3 88.6 90.4 91.7 93.5 22 89.9 91.3 92.7 94.2 89.9 91.6 93.0 94.7 89.2 90.9 92.2 93.9 30 90.7 92.0 93.3 94.0 90.7 92.3 93.6 95.0 90.2 91.7 92.9 94.3 37 91.2 92.5 93.7 94.8 91.2 92.7 93.9 95.3 90.8 92.2 93.3 94.6 45 91.7 92.9 94.0 95.1 91.7 93.1 94.2 95.6 91.4 92.7 93.7 94.9 55 92.1 93.2 94.3 95.4 92.1 93.5 94.6 95.8 91.9 93.1 94.1 95.2 75 92.7 93.8 94.7 95.6 92.7 94.0 95.0 96.0 92.6 93.7 94.6 95.4 90 93.0 94.1 95.0 95.8 93.0 94.2 95.2 96.2 92.7 94.0 94.9 95.6 110 93.3 94.3 95.2 96.0 93.3 94.5 95.4 96.4 93.3 94.3 95.1 95.6 132 93.5 94.6 95.4 96.0 93.5 94.7 95.6 96.5 93.5 94.6 95.4 95.8 180 93.8 94.8 95.6 - 93.8 94.9 95.8 * 93.8 94.8 95.6 * 200 up to 375 94.0 95.0 95.8 * 94.0 95.1 96.0 * 94.0 95.0 95.8 * *Other efficiency levels are indicated for specific motor ratings in IEC 60034-30 IE2 IE3 IE4 IE1 IE2 IE3 IE4 IE1 IE2 IE3

Table 35: Indicative Values (%) of IEC Premium Efficiency (IEC) for 50 HZ

Table 36: Comparison of Efficiency Levels (Pre-EPAct/ EPAct/ Premium) for 4-pole Totally Enclosed Motors for 60 HZ

kW Hp

2 Pole 4 Pole 6 Pole

Size (Hp)

Pre-EPAct¹

EPAct²

NEMA Premium 3

TECHNICAL REFERENCE GUIDE 0.75 1 82.1

84

80.6 82.4 83.8 85.4 86.6 87.7 88.7 89.7 90.8 91.6 92.1 92.5 93.1 93.5 93.9 94.2 94.7 94.9 95.2 95.4 95.6 95.8

1

76.7 79.1 80.8 81.4 83.3 85.5 85.7 86.6 88.5 89.3 89.6 90.2 91.3 91.8 91.7 92.3 92.2 93.5 94.2 94.4 94.6 94.8 94.9 94.9 93

82.5

85.5 86.5 86.5 89.5 89.5 91.7 91.7 92.4 93.6 93.6 94.1 94.5 95.4 95.4 95.4 95.8 96.2 96.2 96.2 96.2 96.2 96.2 96.2 93 95

1.1 1.5 2.2

1.5

83.8 85.1 86.4 87.5 88.4 89.4 90.3 91.2 91.9 92.4 92.7 93.3 93.7 94.3 94.7 95.2 95.4 95.6 95.8 94 95

85.3 86.3 87.5 88.4 89.2 91.8 91.7 92.3 92.7 93.1 93.6 94.3 94.5 95.2 95.4 95.6 95.8 91 94 95

1.5

84 84

2 3 4

2 3 5

87.5 87.5 89.5 89.5

3 4

5.4 7.4 10 15 20 25 30 40 50 60 74 100 120 150 175 210

7.5 10 15 20 25 30 40 50 60 75 100 125 150 200 250 300 350 400 450 500

5.5 7.5

91 91

11 15 22 30 37 45 55 75 90

92.4 92.4

18.5

93 93

93.6 94.1 94.5 94.5

95 95 95

110 132 160

95.4 95.4 95.4 95.4 95.8

200 & above

265 & above

96

1. Pre-EPAct: DOE’s MotorMaster+ software version 4.00.01 (9/26/2003) “Average Standard Efficiency” motor defaults 2. EPAct: Energy Policy Act of 1992 3. NEMA Premium: NEMA MG-1 Table 12-12

TR.42

Data subject to change without notice. 03/24 • www.wolongamerica.com