Standard Motors
Nagpur Motors manufactures standard 3-phase squirrel cage induction motors as per IS 325 and IEC 44.  The present range is IEC frame 63 to 180 L in different polarities.
 
Standard Specification
 
The specification of these standard motors is as under.
Voltage – 415 Volts +/- 10%
Frequency – 50 Hz +/- 5%
Insulation Class – ‘F’ (Temperature Rise limited to class ‘B’)
Ambient Temp. – 45 Degree C.
Altitude – 1000 Mtrs
Protection – IP 44 (Terminal Box IP 54)
Mountings – B3-Foot, B5-Flange, B14-Face
 

Construction Features
 
Motors in frame sizes 90 to 180 L have for close-grained grey cast iron motor housings and end covers.  Frame 90 motors can be supplied with Alluminium motor housings on request.  Motors in frame 71 and 80 are supplied with Pressure Die Cast Alluminium housings as a standard feature.  However, motors in these two frames can also be supplied with Cast Iron housings on request.  Motors in frame 63 are available with Pressure Die Cast motor housings as well as end covers.
 
Terminal Box Position
 
Motors in frame 90 to 160 L have terminal box on right hand side, which can be changed to left hand side by simple reverse assembly.  Frame sizes 63, 71, 80 and 90 (with Pressure Die Cast Housings) have terminal box on top.  Frame 180 L motors have terminal box on top, which can be changed on request to terminal box on either side.
 
Bearing Arrangements
 
Motors up to frame 132 are supplied with shielded bearings of high dynamic capacity without inner bearing cover.  Frame 160 and 180 are supplied with open type bearings with separate inner and outer bearing covers.
 
Standard Ratings
 
HP
KW
FRAME SIZE
2 POLE
4 POLE
6 POLE
8 POLE
3000 RPM
1500 RPM
1000 RPM
7500 RPM
0.16
0.12
63
63
71
71
0.25
1.8
63
63
71
80
0.33
0.25
63
71
71
80
0.5
0.37
71
71
80
90 S
0.75
0.55
71
80
80
90 L
1
0.75
80
80
90 S
100 L
1.5
1.1
80
90 S
90 L
100 L
2
1.5
90 S
90 L
100 L
112 M
3
2.2
90 L
100 L
112 M
132 S
4
3
100 L
100 L
132 S
132 M
5
3.7
100 L
112 M
132 S
160 M
7.5
5.5
132 S
132 S
132 M
160 M
10
7.5
132 S
132 M
160 M
160 L
15
11
160 M
160 M
160 M
180 L
20
15
160 M
160 M
180 L
25
18.5
160 L
180 M
30
22
180 M
180 L
 
Mountings
 

Motors can be used in any of the standard mountings as shown in figure attached as per IS 1231 and IS 2253.
Foot cum Flange mounted or Foot cum Face mounted motors can also be supplied.
 
Dimensions
 
Motors are in IEC frame sizes and the fixing dimensions conform to IS 1231 for foot mounted motors and IS 2223 for flange mounted motors.  The overall dimensions of motors are given in Tables attached.
 
Foot Mounting
 
 
FEAME
FIG
A
AB
AC
AD
B
BB
C
D
E
F
GA
GD
GE
H
HA
HC
HD
K
L
63
B
100
119
116
58
80
97
40
11
23
4
12.5
4
2.5
63
8
120
152
7
210
71
A
112
130
114
90
110
45
14
30
5
16
5
3
71
8
143
7
225
71
B
112
132
134
67
90
115
45
14
30
5
16
5
3
71
10
139
172
7
255
80
A
125
150
164
100
122
50
19
40
6
21.5
6
3.5
80
8.5
162
10
295
80
A
125
152
156
78
100
125
50
19
40
6
21.5
6
3.5
80
12
159
177
10
295
90S
B
140
172
184
160
100
131
56
24
50
8
27
7
4
90
10
182
10
330
90L
A
140
172
184
160
125
156
56
24
50
8
27
7
4
90
10
182
10
330
100L
A
160
192
208
175
140
180
63
28
60
8
31
7
4
100
12
204
257
12
390
112M
A
190
226
232
185
140
180
70
28
60
8
31
7
4
112
12
228
281
12
390
132S
A
216
256
270
205
140
180
89
38
80
10
41
8
5
132
13
267
320
12
470
132M
A
216
256
270
205
178
218
89
38
80
10
41
8
5
132
13
267
320
12
500
160M
A
254
320
328
275
210
310
108
42
110
12
45
8
5
160
23
324
394
15
660
160L
A
254
320
328
275
254
310
108
42
110
12
45
8
5
160
23
324
394
15
660
180M
A
280
370
370
242
320
121
48
110
14
51.5
9
5.5
180
25
335
440
15
740
180L
A
280
370
370
242
320
121
48
110
14
51.5
9
5.5
180
25
335
440
15
740
Flange Mounting
 
 
FEAME
AC
AD
D
E
F
GA
GD
GE
L
M
N
P
LA
LD
S
T
63
116
58
11
23
4
12.5
4
2.5
210
115
95
140
9
16
10
3
71
144
114
14
30
5
16
5
3
265
130
110
160
9
18.5
10
3.5
80
164
134
19
40
6
21.5
6
3.5
310
165
130
200
10
20.5
12
3.5
90
184
160
24
50
8
27
7
4
330
165
130
200
10
21
12
3.5
100
208
175
28
60
8
31
7
4
400
215
180
250
11
25
15
4
112
232
185
28
60
8
31
7
4
400
215
180
250
11
25
15
4
132
270
205
38
80
10
41
8
5
500
265
230
300
12
26
15
4
160
328
275
42
110
12
45
8
5
660
300
250
350
13
34
19
5
180
370
190
4823
110
14
51.5
9
5.5
740
300
250
350
13
34
19
5
 
Std. Face Mounting
Large Face Mounting
 
 
 
FEAME
AC
AD
D
E
F
GA
GD
GE
L
M
N
P
T
S
DEPTH
M
N
P
T
S
DEPTH
63
116
90
11
23
4
12.5
4
2.5
210
75
95
90
2.5
M5
6
100
95
120
3
M6
10
71
144
114
14
30
5
16
5
3
265
85
110
105
2.5
M6
8
115
110
140
3
M8
10
80
164
134
19
40
6
21.5
6
3.5
310
100
130
120
3
M6
8
130
130
160
3.5
M8
10
90
184
160
24
50
8
27
7
4
330
115
130
140
3
M8
10
130
130
160
3.5
M10
12
100
208
175
28
60
8
31
7
4
400
130
180
160
3.5
M8
10
165
180
200
3.5
M10
12
112
232
185
28
60
8
31
7
4
400
130
180
160
3.5
M8
10
165
180
200
3.5
M10
12
132
270
205
38
80
10
41
8
5
500
165
230
200
3.5
M12
12
165
230
200
3.5
M12
12
 
Nagpur Motors
 
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