Series version

Cast-iron series 1LG4
for square-law load torque (e.g. for driving fans)

Cooling

Self-ventilated (IC 411)

Degree of protection

IP55, optionally IP56 or IP65

Insulation

Thermal class 155 (F)

Utilization

Thermal class 130 (B)

Number of poles

4/2, 6/4, 8/4

Frame sizes (FS)

180 M ... 315 L

Rated output at 50 Hz

4.5 ... 175 kW

Synchronous speed

750 ... 3600 rpm

Rated torque at 50 Hz

31 ... 1125 Nm

Efficiency

–

Range of motors with Order No. for type of construction IM B3

P_{rated1, 
50 Hz}

P_{rated2, 
50 Hz}

Frame size

Order No.

kW

kW

FS

4/2-pole: 1500/3000 rpm at 50 Hz
with one winding connected in Dahlander circuit

1500 rpm

3000 rpm

4.8

18

180 M

1LG4183?0BA..

5.8

21.5

180 L

1LG4186?0BA..

8.4

31

200 L

1LG4207?0BA..

10.5

38

225 S

1LG4220?0BA..

13

45

225 M

1LG4223?0BA..

15

55

250 M

1LG4253?0BA..

18

67

280 S

1LG4280?0BA..

22

80

280 M

1LG4283?0BA..

26

90

315 S

1LG4310?0BA..

32

110

315 M

1LG4313?0BA..

35

140

315 L

1LG4316?0BA..

45

170

315 L

1LG4317?0BA..

6/4-pole: 1000/1500 rpm at 50 Hz
with two windings

1000 rpm

1500 rpm

5.5

16

180 M

1LG4183?1BD..

6.5

19

180 L

1LG4186?1BD..

9.5

26

200 L

1LG4207?1BD..

12

34

225 S

1LG4220?1BD..

14.5

40

225 M

1LG4223?1BD..

18

52

250 M

1LG4253?1BD..

25

70

280 S

1LG4280?1BD..

30

82

280 M

1LG4283?1BD..

33

92

315 S

1LG4310?1BD..

45

120

315 M

1LG4313?1BD..

50

150

315 L

1LG4316?1BD..

55

170

315 L

1LG4317?1BD..

8/4-pole: 750/1500 rpm at 50 Hz
with one winding connected in Dahlander circuit

750 rpm

1500 rpm

4.5

16

180 M

1LG4183?0BB..

5

18.5

180 L

1LG4186?0BB..

7.5

28

200 L

1LG4207?0BB..

9.5

35

225 S

1LG4220?0BB..

11.5

42

225 M

1LG4223?0BB..

14.5

52

250 M

1LG4253?0BB..

19

70

280 S

1LG4280?0BB..

23

83

280 M

1LG4283?0BB..

26

95

315 S

1LG4310?0BB..

30

115

315 M

1LG4313?0BB..

35

140

315 L

1LG4316?0BB..

45

175

315 L

1LG4317?0BB..