SCHEDULES

SCHEDULE 16Ecodesign requirements for electric motors and variable speed drives

Energy efficiency requirements for motors5

The minimum efficiency of 60 Hz motors at a rated power not provided in Tables 24 to 26 must be determined as follows—

a

the efficiency of a rated power at, or above, the midpoint between two consecutive values in the tables is the highest of the two efficiencies;

b

the efficiency of a rated power below the midpoint between two consecutive values in the tables is the lowest of the two efficiencies.

Table 27Interpolation coefficients for motors with rated power output P from 0.12 kW up to 0.55 kW

IE code

Coefficients

2 poles

4 poles

6 poles

8 poles

IE2

A

22.4864

17.2751

-15.9218

6.4855

B

27.7603

23.978

-30.258

9.4748

C

37.8091

35.5822

16.6861

36.852

D

82.458

84.9935

79.1838

70.762

IE3

A

6.8532

7.6356

-17.361

-0.5896

B

6.2006

4.8236

-44.538

-25.526

C

25.1317

21.0903

-3,0554

4.2884

D

84.0392

86.0998

79.1318

75.831

IE4

A

-8.8538

8.432

-13.0355

-4.9735

B

-20.3352

2.6888

-36.9497

-21.453

C

8.9002

14.6236

-4.3621

2.6653

D

85.0641

87.6153

82.0009

79.055

Table 28Interpolation coefficients for motors with rated power output P from 0.75 kW up to 200 kW

IE code

Coefficients

2 poles

4 poles

6 poles

8 poles

IE2

A

0.2972

0.0278

0.0148

2.1311

B

-3.3454

-1.9247

-2.4978

-12.029

C

13.0651

10.4395

13.247

26.719

D

79.077

80.9761

77.5603

69.735

IE3

A

0.3569

0.0773

0.1252

0.7189

B

-3.3076

-1.8951

-2.613

-5.1678

C

11.6108

9.2984

11.9963

15.705

D

82.2503

83.7025

80.4769

77.074

IE4

A

0.34

0.2412

0.3598

0.6556

B

-3.0479

-2.3608

-3.2107

-4.7229

C

10.293

8.446

10.7933

13.977

D

84.8208

86,8321

84.107

80.247