Page 1
Customer :
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 31-DEC-2012
TECHNICAL PROPOSAL
Product line :
Catalog Number : 00789EP3QCT254V2
List Price : $2,808
Notes:
Performed by: Checked:
Cooling Tower Motors : High Efficiency - Two Speed
Page 2
DATA SHEET
Three-phase induction motor - Squirrel cage rotor
Customer :
Product line :
Frame : 254T
Output : 1.75 HP
Frequency : 60 Hz
Poles : 8
Full load speed : 885
Slip : 1.67 %
Voltage : 230 V
Rated current : 9.19 A
Locked rotor current : 34.0 A
Locked rotor current (Il/In) : 3.7
No-load current : 8.00 A
Full load torque : 10.2 lb.ft
Locked rotor torque : 220 %
Breakdown torque : 280 %
Design : A
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 : 265 lb
Moment of inertia : 2.6198 sq.ft.lb
Noise level : 54 dB(A)
Cooling Tower Motors : High Efficiency - Two Speed
No.:
Date: 31-DEC-2012
D.E. N.D.E. Load Power factor Efficiency (%)
Bearings 6309 2RS 6209 2RS 100% 0.48 74.0
Regreasing interval --- --- 75% 0.40 75.0
Grease amount --- --- 50% 0.32 66.0
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
C
No.:
Date: 31-DEC-2012
C - Slip D - Current at 230V (A)
1.0
2.0
3.0
60
0.6
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 : 254T
Output : 1.75 HP
Frequency : 60 Hz
Full load speed : 885
Voltage : 230 V
Rated current : 9.19 A
Insulation class : F
Cooling Tower Motors : High Efficiency - Two Speed
A
B
D
Percent of rated output (%)
Locked rotor current (Il/In) : 3.7
Duty cycle : S1
Service factor : 1.15
Design : A
Locked rotor torque : 220 %
Breakdown torque : 280 %
4.0
5.0
16
12
8
4
0
Notes:
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 : High Efficiency - Two Speed
9.0
8.0
7.0
6.0
A
5.0
4.0
3.0
2.0
1.0
0.0
Frame : 254T
Output : 1.75 HP
Frequency : 60 Hz
Full load speed : 885
Voltage : 230 V
Rated current : 9.19 A
Insulation class : F
Notes:
Performed by Checked
Locked rotor current (Il/In) : 3.7
Duty cycle : S1
Service factor : 1.15
Design : A
Locked rotor torque : 220 %
Breakdown torque : 280 %
Page 5
1 2 3 4 5 6 7 8
A
B
C
D
Notes:
E
Performed by:
2E
10.000
B
10.000
K
F
2.559
N-W
4.000
d1
A 4
BF
0.828
2F
8.252
C
23.213
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 : High Efficiency - Two Speed
31-DEC-2012Three-phase induction motor
Frame 254T - IP55
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