Customer :
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 28-DEC-2012
TECHNICAL PROPOSAL
Product line :
Catalog Number : 25012XT3G449T
List Price : $48,048
Notes:
Performed by: Checked:
Three-Phase : Explosion Proof - NEMA Premium
DATA SHEET
Three-phase induction motor - Squirrel cage rotor
Customer :
Product line :
Frame : 449T
Output : 250 HP
Frequency : 60 Hz
Poles : 6
Full load speed : 1190
Slip : 0.83 %
Voltage : 460 V
Rated current : 299 A
Locked rotor current : 2420 A
Locked rotor current (Il/In) : 8.1
No-load current : 134 A
Full load torque : 1088 lb.ft
Locked rotor torque : 280 %
Breakdown torque : 300 %
Design : A
Insulation class : F
Temperature rise : 80 K
Locked rotor time : 10 s (hot)
Service factor : 1.15
Duty cycle : S1
Ambient temperature : -20°C - +40°C
Altitude : 1000
Degree of Protection : IP54
Approximate weight : 3188 lb
Moment of inertia : 144.52 sq.ft.lb
Noise level : 70 dB(A)
Three-Phase : Explosion Proof - NEMA Premium
No.:
Date: 28-DEC-2012
D.E. N.D.E. Load Power factor Efficiency (%)
Bearings 6322 C3 6319 C3 100% 0.81 95.8
Regreasing interval 9212 h 11094 h 75% 0.76 95.4
Grease amount 60 g 45 g 50% 0.64 95.0
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
C
A
No.:
Date: 28-DEC-2012
C - Slip D - Current at 460V (A)
1.0
2.0
3.0
4.0
50
0.5
40
0.4
A - Efficiency (%)
B - Power factor
0 10 20 30 40 50 60 70 80 90 100 110 120 130
Customer :
Product line :
Frame : 449T
Output : 250 HP
Frequency : 60 Hz
Full load speed : 1190
Voltage : 460 V
Rated current : 299 A
Insulation class : F
Three-Phase : Explosion Proof - NEMA Premium
B
D
Percent of rated output (%)
Locked rotor current (Il/In) : 8.1
Duty cycle : S1
Service factor : 1.15
Design : A
Locked rotor torque : 280 %
Breakdown torque : 300 %
5.0
400
300
200
100
0
Notes:
Performed by Checked
5.0
CHARACTERISTIC CURVES RELATED TO SPEED
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 28-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 (%)
Three-Phase : Explosion Proof - NEMA Premium
9.0
8.0
7.0
A
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Frame : 449T
Output : 250 HP
Frequency : 60 Hz
Full load speed : 1190
Voltage : 460 V
Rated current : 299 A
Insulation class : F
Notes:
Performed by Checked
Locked rotor current (Il/In) : 8.1
Duty cycle : S1
Service factor : 1.15
Design : A
Locked rotor torque : 280 %
Breakdown torque : 300 %
1 2 3 4 5 6 7 8
A
B
C
D
Notes:
E
2E
18.000
J
3.937
S
0.875
D
F
11.000
C
54.996
Flange
FD-508
BB
0.203
A
21.929
K
7.104
N-W
8.500
G
1.630
AA
2XNPT 3"
AJ
20.000
2F
25.000
P
24.016
U
3.375
O
23.622
d1
DUNC 3/4"-10
AK
18.000
B
32.126
ES
7.087
R
2.880
HD
27.165
d2
DUNC 3/4"-10
BD
21.656
BA
7.500
depth
0.875
AB
20.984
H
0.807
T
3.543
BF
18.000
Performed by:
Checked:
Customer:
Three-Phase : Explosion Proof - NEMA Premium
28-DEC-2012Three-phase induction motor
Frame 449T - IP54
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