Page 1
Customer :
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 31-DEC-2012
TECHNICAL PROPOSAL
Product line :
Catalog Number : 01012ET3PCT256T
List Price : $2,751
Notes:
Performed by: Checked:
Cooling Tower Motors : NEMA Premium
Page 2
DATA SHEET
Three-phase induction motor - Squirrel cage rotor
Customer :
Product line :
Frame : 256T
Output : 10 HP
Frequency : 60 Hz
Poles : 6
Full load speed : 1170
Slip : 2.50 %
Voltage : 200 V
Rated current : 30.5 A
Locked rotor current : 210 A
Locked rotor current (Il/In) : 6.9
No-load current : 14.4 A
Full load torque : 44.3 lb.ft
Locked rotor torque : 230 %
Breakdown torque : 290 %
Design : B
Insulation class : F
Temperature rise : 80 K
Locked rotor time : 22 s (hot)
Service factor : 1.25
Duty cycle : S1
Ambient temperature : -20°C - +40°C
Altitude : 1000
Degree of Protection : IP55
Approximate weight : 290 lb
Moment of inertia : 4.4311 sq.ft.lb
Noise level : 59 dB(A)
Cooling Tower Motors : NEMA Premium
No.:
Date: 31-DEC-2012
D.E. N.D.E. Load Power factor Efficiency (%)
Bearings 6309 2RS 6209 2RS 100% 0.78 91.0
Regreasing interval --- --- 75% 0.67 91.0
Grease amount --- --- 50% 0.60 90.2
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
80
70
60
50
40
0.9
0.8
0.7
0.6
0.5
0.4
C
A
B
No.:
Date: 31-DEC-2012
C - Slip D - Current at 200V (A)
1.0
2.0
3.0
4.0
5.0
40
30
A - Efficiency (%)
B - Power factor
0 10 20 30 40 50 60 70 80 90 100 110 120 130
Customer :
Product line :
Frame : 256T
Output : 10 HP
Frequency : 60 Hz
Full load speed : 1170
Voltage : 200 V
Rated current : 30.5 A
Insulation class : F
Notes:
Cooling Tower Motors : NEMA Premium
D
Percent of rated output (%)
Locked rotor current (Il/In) : 6.9
Duty cycle : S1
Service factor : 1.25
Design : B
Locked rotor torque : 230 %
Breakdown torque : 290 %
20
10
0
Performed by Checked
Page 4
5.0
CHARACTERISTIC CURVES RELATED TO SPEED
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 31-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 (%)
Cooling Tower Motors : NEMA Premium
9.0
8.0
7.0
A
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Frame : 256T
Output : 10 HP
Frequency : 60 Hz
Full load speed : 1170
Voltage : 200 V
Rated current : 30.5 A
Insulation class : F
Notes:
Performed by Checked
Locked rotor current (Il/In) : 6.9
Duty cycle : S1
Service factor : 1.25
Design : B
Locked rotor torque : 230 %
Breakdown torque : 290 %
Page 5
1 2 3 4 5 6 7 8
A
B
C
D
Notes:
E
Performed by:
2E
10.000
B
11.732
K
F
2.559
N-W
4.000
d1
A 4
BF
0.828
2F
10.000
C
24.945
O
12.431
U
1.625
Flange
FD-317
BB
0.203
H
0.531
D
6.250
P
12.283
R
1.406
AJ
12.500
BA
4.250
G
0.817
ES
2.756
AB
10.079
AK
11.000
A
12.126
J
2.520
S
0.375
AA
NPT 1 1/2"
BD
14.000
Checked:
Customer:
Cooling Tower Motors : NEMA Premium
31-DEC-2012Three-phase induction motor
Frame 256T - IP55
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