Customer :
Three-phase induction motor - Squirrel cage rotor
No.:
Date: 31-DEC-2012
TECHNICAL PROPOSAL
Product line :
Catalog Number : 03018ET3HCT286T-W22
List Price : $3,738
Notes:
Performed by: Checked:
W22 Cooling Tower Motors: NEMA Premium
DATA SHEET
Three-phase induction motor - Squirrel cage rotor
Customer :
Product line :
Frame : 286T
Output : 30 HP
Frequency : 60 Hz
Poles : 4
Full load speed : 1765
Slip : 1.94 %
Voltage : 575 V
Rated current : 28.1 A
Locked rotor current : 171 A
Locked rotor current (Il/In) : 6.1
No-load current : 8.80 A
Full load torque : 88.1 lb.ft
Locked rotor torque : 240 %
Breakdown torque : 240 %
Design : B
Insulation class : F
Temperature rise : 80 K
Locked rotor time : 20 s (hot)
Service factor : 1.25
Duty cycle : S1
Ambient temperature : -20°C - +40°C
Altitude : 1000
Degree of Protection : IP55
Approximate weight : 437 lb
Moment of inertia : 5.8532 sq.ft.lb
Noise level : 64 dB(A)
W22 Cooling Tower Motors: NEMA Premium
No.:
Date: 31-DEC-2012
D.E. N.D.E. Load Power factor Efficiency (%)
Bearings 6311 C3 6211 C3 100% 0.84 93.6
Regreasing interval 20000 h 20000 h 75% 0.80 93.0
Grease amount 18 g 11 g 50% 0.70 93.0
Notes:
Performed by Checked
PERFORMANCE CURVES RELATED TO RATED OUTPUT
Three-phase induction motor - Squirrel cage rotor
100
1.0 0.0
C
90
80
70
0.9
0.8
0.7
A
No.:
Date: 31-DEC-2012
C - Slip D - Current at 575V (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 : 286T
Output : 30 HP
Frequency : 60 Hz
Full load speed : 1765
Voltage : 575 V
Rated current : 28.1 A
Insulation class : F
W22 Cooling Tower Motors: NEMA Premium
B
D
Percent of rated output (%)
Locked rotor current (Il/In) : 6.1
Duty cycle : S1
Service factor : 1.25
Design : B
Locked rotor torque : 240 %
Breakdown torque : 240 %
4.0
5.0
40
30
20
10
0
Notes:
Performed by Checked
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 (%)
W22 Cooling Tower Motors: NEMA Premium
9.0
8.0
7.0
6.0
A
5.0
4.0
3.0
2.0
1.0
0.0
Frame : 286T
Output : 30 HP
Frequency : 60 Hz
Full load speed : 1765
Voltage : 575 V
Rated current : 28.1 A
Insulation class : F
Notes:
Performed by Checked
Locked rotor current (Il/In) : 6.1
Duty cycle : S1
Service factor : 1.25
Design : B
Locked rotor torque : 240 %
Breakdown torque : 240 %
1 2 3 4 5 6 7 8
A
B
C
D
Notes:
E
2E
11.000
2F
11.000
N-W
4.622
D
F
7.000
HD
16.154
C
27.929
d2
A 4
J
3.110
K
2.874
ES
3.149
G
1.023
HF
7.000
LL
7.813
A
13.780
B
13.071
S
0.500
HB
3.535
HH
10.250
LM
7.482
P
13.780
BA
4.750
R
1.594
O
14.067
HK
3.987
AA
NPT 1 1/2"
AB
11.073
U
1.875
depth
0.500
T
2.087
H
0.531
d1
A 4
Performed by:
Checked:
Customer:
W22 Cooling Tower Motors: NEMA Premium
31-DEC-2012Three-phase induction motor
Frame 286T - IP55
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