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CN5086 Electric Motor

Get power built for your most demanding gas compression applications. Every Cat® electric motor is tested at each stage of production to make sure it performs reliably under load and according to your process requirements. High operating efficiency and low operating costs come with low noise levels and no emissions. Cat electric motors for gas compression are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.

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Voltage/Frequency4000V ± 10%/60 Hz

Type of EX-ProtectionClass 1 Division 2, Group A,B,C,D T3 (NEC or CEC)

Electric Motor TypeSquirrel Cage Induction Motor

Mounting DesignationF1 or F2

Number of Poles8

Full Load Speed894r/min

Connection of Stator WindingStar

Rated Torque29366lb/ft

StandardsNEMA MG1

Maximum Altitude - Before Derate3000ft

Service Factor1.15SF

No Load Current200 Amps

Maximum Ambient Temperature104°F

Temperature RiseClass B at rated load


InsulationClass F

Enclosure Type/Method of CoolingWP-II


Locked Rotor Amps520% Code E

Full Load Current658 Amps

Locked Rotor Torque60%

Breakdown Torque190%


Self-lubricated sleeve bearings

Insulated non-drive end bearings to reduce bearing currents

Bearing RTDs for temperature monitoring


Designed for minimal vibration

Dynamic balancing at full operational speed

Fabricated copper squirrel cages

Oversized, forged, keyless shaft

AISI 4140/DIN42CrMo4 shaft


Radial air ducts ensure uniform and efficient cooling

Vacuum pressure impregnated with specially formulated epoxy resin

2X RTDS per Phase

Space heater

Welded and machined stator core retains its rigidity throughout motor life to ensure a sealed and homogeneous insulation system that results in high dielectric strength, excellent heat transfer and the elimination of hazardous internal partial discharges



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