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445TSTDCD4007 – Marathon 250 HP Fire Pump Motor, 3 phase, 3600 RPM, 460 V, 445TS Frame, ODP – U539A

445TSTDCD4007 – Marathon 250 HP Fire Pump Motor, 3 phase, 3600 RPM, 460 V, 445TS Frame, ODP – U539A

445TSTDCD4007 Marathon Fire Pump Motors

  • Designed for use on pumps for fire pump duty
  • UL file EX5190, CSA file LR2025 and CE mark
  • 50°C ambient
  • Red paint on 25 HP through 200 HP
  • NEMA Design B, Code G or less
  • Rated 60/50 hertz, 190/380 or 380 volt at next lower horsepower
  • Single voltage motors have 12 leads and are suitable for wye-delta, across the line, or part winding start
  • Dual voltage motors have 12 leads, suitable for wye-delta or across the line start on either voltage, or part winding start on low voltage

Marathon Motors
Regal Beloit

Description

445TSTDCD4007 – Marathon 250 HP Fire Pump Motor, 3 phase, 3600 RPM, 460 V, 445TS Frame, ODP – U539A

445TSTDCD4007 Marathon Fire Pump Motors

General Specifications

UPC: 722856068132 Weight: 0 LB
Packaged Length: 49.6 IN Packaged Width: 38.18 IN
Packaged Height: 35.43 IN

Nameplate Specifications

Output HP: 250 Hp Output KW: 187.0 kW
Frequency: 60/50 Hz Voltage: 460 V
Current: 272.0 A Speed: 3575 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 94.5 % Power Factor: 89
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: F
Frame: 445TS Enclosure: Drip Proof
Thermal Protection: No Ambient Temperature: 50 °C
Drive End Bearing Size: 6314 Opp Drive End Bearing Size: 6314
UL: Listed CSA: Y
CE: Y IP Code: 23

Technical Specifications

Electrical Type: Squirrel Cage Induction Run Starting Method: Part Wdg Start & Wye Start Delta Run
Poles: 2 Rotation: Reversible
Resistance Main: .032 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: TS Overall Length: 40.83 in
Frame Length: 25.98 in Shaft Diameter: 2.375 in
Shaft Extension: 4.75 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)
Full Load 272.00 100.0 367.00 100.0 3,575 89.0 250.00
1/3 1,600.00 475.00 1,200 250.00
Pull-Up 1,500.00 475.00 1,800 250.00
2/3 1,350.00 550.00 2,400 250.00
Locked-Rotor 1,675.00 575.00 155.0 0 33.0 250.00
Break-Down 1,000.00 850.00 230.0 3,450 68.0 250.00
No Load 65.00 0.00 0.0 3,600 7.0 250.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 65.00 92.00 145.00 206.00 272.00 315.00 345.00
Rated Output (KW) 5.00 50.50 98.50 147.00 197.00 228.00 249.00
Efficiency (%) 0.0 91.7 94.1 94.5 94.5 94.1 93.6
Power Factor (%) 6.0 69.0 84.0 88.0 89.0 89.0 89.0
Speed (RPM) 3,600 3,595 3,588 3,582 3,575 3,572 3,568
Temp. Rise @ FL 0.0 0.0 0.0 0.0 50.0 70.0 85.0
Torque (ft-lbs) 0.00 91.50 183.00 275.00 367.00 423.00 460.00

Marathon Motors
Regal Beloit