
Customer :
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 24-DEC-2012
TECHNICAL PROPOSAL
Product line :
Catalog Number : 03712ET3Y250S/M-W22
List Price : $9,947
Notes:
Performed by: Checked:
Three-Phase: W22 IE3 IEC Tru-Metric - TEFC (IP55) Cast Iron Frame

DATA SHEET
Three-phase induction motor - Squirrel cage rotor
Customer :
Product line :
Frame : 250S/M
Output : 50 HP
Frequency : 60 Hz
Poles : 6
Full load speed : 1185
Slip : 1.25 %
Voltage : 460 V
Rated current : 58.8 A
Locked rotor current : 459 A
Locked rotor current (Il/In) : 7.8
No-load current : 24.6 A
Full load torque : 219 lb.ft
Locked rotor torque : 280 %
Breakdown torque : 330 %
Design : N
Insulation class : F
Temperature rise : 80 K
Locked rotor time : 29 s (hot)
Service factor : 1.25
Duty cycle : S1
Ambient temperature : -20°C - +40°C
Altitude : 1000
Degree of Protection : IP55
Approximate weight : 1072 lb
Moment of inertia : 33.792 sq.ft.lb
Noise level : 68 dB(A)
Three-Phase: W22 IE3 IEC Tru-Metric - TEFC (IP55) Cast Iron Frame
No.:
Date: 24-DEC-2012
D.E. N.D.E. Load Power factor Efficiency (%)
Bearings 6314 C3 6314 C3 100% 0.84 94.1
Regreasing interval 17000 h 17000 h 75% 0.79 94.1
Grease amount 27 g 27 g 50% 0.69 93.6
Notes:
Performed by Checked

PERFORMANCE CURVES RELATED TO RATED OUTPUT
Three-phase induction motor - Squirrel cage rotor
100
1.0 0.0
90
0.9
80
0.8
70
0.7
60
0.6
50
0.5
40
0.4
C
A
B
No.:
Date: 24-DEC-2012
C - Slip D - Current at 460V (A)
1.0
2.0
3.0
4.0
5.0
80
60
A - Efficiency (%)
B - Power factor
0 10 20 30 40 50 60 70 80 90 100 110 120 130
Customer :
Product line :
Frame : 250S/M
Output : 50 HP
Frequency : 60 Hz
Full load speed : 1185
Voltage : 460 V
Rated current : 58.8 A
Insulation class : F
Notes:
Three-Phase: W22 IE3 IEC Tru-Metric - TEFC (IP55) Cast Iron Frame
D
Percent of rated output (%)
Locked rotor current (Il/In) : 7.8
Duty cycle : S1
Service factor : 1.25
Design : N
Locked rotor torque : 280 %
Breakdown torque : 330 %
40
20
0
Performed by Checked

5.0
CHARACTERISTIC CURVES RELATED TO SPEED
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 24-DEC-2012
10.0
B - Current related to rated current (I/In)
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
A - Torque related to rated torque (C/Cn)
Customer :
Product line :
0 10 20 30 40 50 60 70 80 90 100
9.0
B
A
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Speed related to rated speed (%)
Three-Phase: W22 IE3 IEC Tru-Metric - TEFC (IP55) Cast Iron Frame
Frame : 250S/M
Output : 50 HP
Frequency : 60 Hz
Full load speed : 1185
Voltage : 460 V
Rated current : 58.8 A
Insulation class : F
Notes:
Performed by Checked
Locked rotor current (Il/In) : 7.8
Duty cycle : S1
Service factor : 1.25
Design : N
Locked rotor torque : 280 %
Breakdown torque : 330 %

1 2 3 4 5 6 7 8
A
B
C
D
A
E
F
406
B
311/349
D
65m6
GD
11
GB
53
HD
583
d1
DM20
N
450
Holes
8
AA
100
BA
146
E
140
DA
60m6
GF
11
K
24
d2
DM20
P
550
AB
506
BB
467
ES
125
EA
140
H
250
L
965
Flange
FF-500
T
5
AC
486
C
168
F
18
TS
125
HA
43
LC
1113
LA
18
S
19
AD
408
CA
354/316
G
58
FA
18
HC
493
S1
2XM63X1,5
M
500
Angle
22°30'
Notes:
Performed by:
Checked:
Customer:
Three-Phase: W22 IE3 IEC Tru-Metric - TEFC (IP55) Cast Iron Frame
24-DEC-2012Three-phase induction motor
Frame 250S/M - IP55