Page 1
Customer :
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 17-DEC-2012
TECHNICAL PROPOSAL
Product line :
Catalog Number : 25009ET3G449T-W22
List Price : $56,168
Notes:
Performed by: Checked:
W22 NEMA Premium - Ball Bearings
Page 2
DATA SHEET
Three-phase induction motor - Squirrel cage rotor
Customer :
Product line :
Frame : L447/9T
Output : 250 HP
Frequency : 60 Hz
Poles : 8
Full load speed : 890
Slip : 1.11 %
Voltage : 460 V
Rated current : 308 A
Locked rotor current : 1850 A
Locked rotor current (Il/In) : 6.0
No-load current : 130 A
Full load torque : 1455 lb.ft
Locked rotor torque : 200 %
Breakdown torque : 230 %
Design : B
Insulation class : F
Temperature rise : 80 K
Locked rotor time : 24 s (hot)
Service factor : 1.15
Duty cycle : S1
Ambient temperature : -20°C - +40°C
Altitude : 1000
Degree of Protection : IP55
Approximate weight : 3550 lb
Moment of inertia : 254.72 sq.ft.lb
Noise level : 64 dB(A)
W22 NEMA Premium - Ball Bearings
No.:
Date: 17-DEC-2012
D.E. N.D.E. Load Power factor Efficiency (%)
Bearings 6322 C3 6319 C3 100% 0.79 95.4
Regreasing interval 20000 h 20000 h 75% 0.75 95.4
Grease amount 60 g 45 g 50% 0.65 95.4
Notes:
Performed by Checked
Page 3
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: 17-DEC-2012
C - Slip D - Current at 460V (A)
1.0
2.0
3.0
4.0
5.0
400
300
A - Efficiency (%)
B - Power factor
0 10 20 30 40 50 60 70 80 90 100 110 120 130
Customer :
Product line :
Frame : L447/9T
Output : 250 HP
Frequency : 60 Hz
Full load speed : 890
Voltage : 460 V
Rated current : 308 A
Insulation class : F
Notes:
W22 NEMA Premium - Ball Bearings
D
Percent of rated output (%)
Locked rotor current (Il/In) : 6.0
Duty cycle : S1
Service factor : 1.15
Design : B
Locked rotor torque : 200 %
Breakdown torque : 230 %
200
100
0
Performed by Checked
Page 4
5.0
CHARACTERISTIC CURVES RELATED TO SPEED
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 17-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
B
Speed related to rated speed (%)
W22 NEMA Premium - Ball Bearings
9.0
8.0
7.0
6.0
5.0
A
4.0
3.0
2.0
1.0
0.0
Frame : L447/9T
Output : 250 HP
Frequency : 60 Hz
Full load speed : 890
Voltage : 460 V
Rated current : 308 A
Insulation class : F
Notes:
Performed by Checked
Locked rotor current (Il/In) : 6.0
Duty cycle : S1
Service factor : 1.15
Design : B
Locked rotor torque : 200 %
Breakdown torque : 230 %
Page 5
1 2 3 4 5 6 7 8
A
B
C
D
E
F
2E
18.000
2F
20.000/25.000
N-W
8.500
D
11.000
HF
20.551
C
57.181
d2
DUNC 3/4"-10
BF
0.828
J
3.937
K
8.780
ES
7.087
G
1.630
HG
28.236
LL
15.906
Flange
FD-508
BB
0.203
A
21.929
B
31.535
S
0.875
HB
11.417
HH
11.500
LM
17.244
AJ
20.000
P
25.866
BA
7.500
R
2.880
O
23.874
HK
8.464
AA
2XNPT 3"
AK
18.000
AB
23.071
U
3.375
depth
0.875
T
4.83
H
0.810
d1
DUNC 3/4"-10
BD
21.65
Notes:
Performed by:
Checked:
Customer:
W22 NEMA Premium - Ball Bearings
17-DEC-2012Three-phase induction motor
Frame L447/9T - IP55
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