Page 1
PRODUCT INFORMATION PACKET
Model No: 256THFNA19004AA
Catalog No: 811556.00
20HP..3537RPM.256.TEFC./V.3PH.60HZ.CONT.NOT.40C.1.15SF.RIGID.IEEE 841.256THFNA19004AA
IEEE 841
Regal and Leeson are trademarks of Regal Beloit Corporation or one of its affiliated companies.
©2018 Regal Beloit Corporation, All Rights Reserved. MC017097E
1 of 5
Page 2
Product Information Packet: Model No: 256THFNA19004AA, Catalog No:811556.00
20HP..3537RPM.256.TEFC./V.3PH.60HZ.CONT.NOT.40C.1.15SF.RIGID.IEEE 841.256THFNA19004AA
Nameplate Specifications
Output HP
Frequency 60 Hz Voltage 460 V
Current
Service Factor
Efficiency 92.4 % Duty Continuous
Insulation Class
KVA Code G Frame 256T
Enclosure Totally Enclosed Fan Cooled Overload Protector No
Ambient Temperature
Opp Drive End Bearing Size 210 UL Recognized
CSA
IP Code
20 Hp
23.4 A
1.15
F
40 °C
Y
56
Output KW
Speed
Phase
Design Code
Drive End Bearing Size
CE
14.9 kW
3537 rpm
3
B
309
Y
Technical Specifications
Electrical Type
Poles 2 Rotation Reversible
Squirrel Cage Inverter Rated
Starting Method
Line Or Inverter
Mounting
Drive End Bearing BALL Opp Drive End Bearing BALL
Frame Material Cast Iron Shaft Type T
Overall Length
Shaft Diameter 1.625 in Shaft Extension 4 in
Assembly/Box Mounting
Outline Drawing
Rigid base
25.27 in
F1/F2 CAPABLE
B-SS203002LE-1225
Motor Orientation
Frame Length
Connection Diagram
HORIZONTAL
12.25 in
A-EE7300-LE
This is an uncontrolled document once printed or downloaded and is subject to change without notice. Date Created: 10/15/2018
2 of 5
Page 3
10/2/2008 12:41:47 AM
3 of 5
Page 4
9/4/2007 11:27:01 PM -
4 of 5
Page 5
Date:
Speed (RPM)
Data Sheet
Current (Amps)
P
E
10.0
20.0
30.0
0.0
0 500 1000 1500 2000 2500 3000 3500 4000
40.0
TORQU
50.0
60.0
70.0
80.0
90.0
30.0
40.0
50.0
0% 20% 40% 60 % 80% 100% 120% 140%
F
60.0
70.0
EFF
80.0
100.0
90.0
Torque (ft-lb)
Efficiency (%) P.F. (%) Current (Amps)
55.0 50.0 84.0 29.7 0.00 3600
145 131 100 23.4 7.0 20.0
0 1800 3155 3537 3600
P.F. (%)
3600 3585 3570 3555 3537 3,525 3515 0
0.00 7.5 15.0 22.0 29.7 31.0 37.5 55.0
10.5 58.5 78.0 85.0 86.0 87.0 88.5 37.0
LR Pull-Up BD Rated Idle
7.0 9.0 13.0 18.0 23.4 26.0 29.5 145
1/29/2018 811556.00
Load 0% 25% 50% 75% 100% 115% 125% LR
Current (Amps)
Torque (ft-lb)
RPM
Efficiency (%)
Motor Speed Data
LOAD
Torque Amps
87.5 91.0 91.7 92.4 91.7 90.2
Uncontrolled Copy
Speed -Torque Curve
Motor Load Data
RPM
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
A
M
P
S
0
0
Additional Specifications:
0.2530 0.2230 1.0790 1.1190 37.7720
R1 R2 X1 X2 Xm
EQUIV CKT (OHMS / PHASE)
VFD Rating
Outline Dwg B-SS203002LE-1225
Conn. Diag A-EE7300-LE
Rotor/Shaft wk²
Duty
Ambient
Elevation
Ref Wdg
Sound Pressure @ 1M
K256288 NONE
Design
LR Code letter
Service Factor
Temp Rise @ FL
Construction
Voltage
Frequency
HP
Sync. RPM
Frame
Enclosure
Information Block
CONSTANT 20:1
72 dBA
CONT
1,000
1.30
1.15
55
40
60
G
B
TEFC
TFN
460
256
Data @
feet
Lb-Ft²
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
A
M
P
S
°
°
C
C
Hz
V
460
v
5 of 5
Loading...