Marathon® AC Motor, 250 hp, 2300/4000 V AC, 4-Pole, TEFC

Description

Marathon® AC Motor, 4-Pole Continuous-Duty, Medium Voltage Motors Special Features, 250 hp, 2300/4000 V AC, 56/32 A, 60 Hz Frequency, 3 ph, 1788 rpm Speed, 1 Speed, TEFC Enclosure, 447/449T Frame, 3.38 in Dia x 8.75 in L Shaft, Reversible Rotation, 1.15 Service Factor, Ball Bearing, 922 ft-lb Torque, Rigid Base Mounting, 40 deg C, Insulation Class: Class H, Cast Iron, 56.79 in L x 39.42 in W x 27.35 in H Dimensions

Features:

• Open Conrad radial ball bearings rated for 100000 hour B-10 life on direct-coupled loads
• Oversized cast iron conduit box
• Epoxy 100% solids, Vacuum Pressure Impregnation (VPI) resin
• Grease fittings with extended grease tubes
• Internal and external epoxy paint finish
• Front and rear cast iron bearing caps
• Actual test and vibration data supplied with each motor
• Horizontal motor orientation
• Squirrel cage induction run

Standards/Approval:

• NEMA Premium® Efficiency

Amperage Rating	56/32 A
Bearing Type	Ball
Dimensions	56.79 in L x 39.42 in W x 27.35 in H
Enclosure Type	TEFC
Frame	447/449T
Frequency Rating	60 Hz
Horsepower	250 hp
Insulation Class	Class H
Material	Cast Iron
Mounting Type	Rigid Base
Number of Speeds	1
Phase	3
Rotation	Reversible
Service Factor	1.15
Shaft Size	3.38 in Dia x 8.75 in L
Special Features	Medium Voltage Motors
Speed	1788 rpm
Manufacturer	Marathon®