Marathon 25 HP Variable Speed Motor, 3 phase, 1800 RPM, 230/460 V, 284TC Frame, TEBC - Y511

Catalog #:Y511
Part #:284THFPA8038
  • MAX GUARD® Class H insulation system
  • Constant torque operation from 0 to base speed on vector drive, including TEFC (On Volts/Hertz drives, TEFC motors are limited to 20:1 constant torque
  • Constant HP operation to twice base speed (143-256 frame);1.5 times base (all others)
  • Optimized for operation with IGBT inverter (NEMA Design A)
  • Normally closed thermostats (one per phase, class F)
  • Blue Chip quality, cast iron frame and brackets
  • Patented “fracket” design (TEBC enclosure)
  • Separate power supply required for blower motor
File is not found. Please try again or contact customer service.
Sorry, at this time this product does not comply with the standards of the country you selected.
This product complies with the standards of the country you selected.
The account you are currently on does not have access to purchase this product. Please change to your {0} account to purchase.
The following item(s) have been moved to {0}: {1}
Quantities over {0} may require additional lead time. A Regal representative will contact you if this occurs.
You can only order in multiples of {0}. Please enter a valid quantity for this item.
Sorry, this item is no longer available.
Discontinued
Available warehouses not found.
Weight:470.00 LB
List Price: $8,851.00

General Specifications

UPC: 722856025104 Weight: 470.00 LB
Packaged Length: 44.88 IN Packaged Width: 26 IN
Packaged Height: 19.37 IN

Nameplate Specifications

Output HP: 25 Hp Output KW: 18.7 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 63.0/31.5 A Speed: 1765 rpm
Service Factor: 1 Phase: 3
Efficiency: 91.7 % Power Factor: 82
Duty: Continuous Insulation Class: H
Design Code: INV KVA Code: G
Frame: 284TC Enclosure: Totally Enclosed Blower cooled - Axial
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6311 Opp Drive End Bearing Size: 6210
UL: Recognized CSA: Y
CE: Y IP Code: 43

Technical Specifications

Electrical Type: Squirrel Cage Inverter Duty Starting Method: Inverter Only
Poles: 4 Rotation: Reversible
Resistance Main: .325 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: T Overall Length: 37.81 in
Frame Length: 12.75 in Shaft Diameter: 1.875 in
Shaft Extension: 4.37 in Assembly/Box Mounting: F1/F2 Capable

Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
2/3 155.00 492.0 155.00 208.0 1,200 25.00
1/3 175.00 556.0 130.00 175.0 600 25.00
Pull-Up 165.00 524.0 140.00 188.0 900 25.00
Full Load 31.50 100.0 74.40 100.0 1,765 25.00
Break-Down 115.00 365.0 195.00 262.0 1,625 66.0 25.00
Locked-Rotor 182.00 578.0 147.00 198.0 0 39.5 25.00
No Load 14.00 44.0 0.00 0.0 1,800 25.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 125 % 150 % 200 %
Current (Amps) 14.00 15.50 20.00 25.00 31.50 39.00 46.50 66.50
Rated Output (KW) 0.75 5.50 10.00 15.00 20.50 25.50 31.20 43.50
Efficiency (%) 0.0 86.5 91.0 92.4 91.7 91.0 88.5 84.0
Power Factor (%) 6.0 43.0 65.0 75.5 82.0 82.5 84.0 81.5
Speed (RPM) 1,800 1,794 1,785 1,775 1,765 1,760 1,745 1,715
Temp. Rise @ FL 0.0 0.0 0.0 0.0 65.0 0.0 0.0 0.0
Torque (ft-lbs) 0.00 18.50 37.00 55.50 74.40 93.50 112.00 150.00
This name is used, please enter another
{0} was created successfully.
{0} was deleted successfully.
Please select an account
Profile updated successfully.
Thank you for your registration request. We have submitted your information to your company's administrator for review and approval.
You have been logged out due to inactivity. Please log in again.