CN3086 Electric Motor for Gas Compression

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Mounting DesignationF1 or F2
Shaft8.5 in (216 mm)
Locked Rotor Amps490% Code E
Service Factor1.15 SF (1.0 VFD)
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.


Mounting DesignationF1 or F2
Shaft8.5 in (216 mm)
Locked Rotor Amps490% Code E
Service Factor1.15 SF (1.0 VFD)
Full Load Current390 Amps
Locked Rotor Torque50%
Temperature RiseClass B at rated load
InsulationClass F
StandardsNEMA MG1
Connection of Stator WindingStar
Number of Poles8
Maximum Ambient Temperature104 °F (40 °C)
Maximum Altitude - Before Derate3300 ft (1000 m)
Rated Torque17658 lb/ft (23941 N·m)
Enclosure Type/Method of CoolingWP-II
Electric Motor TypeSquirrel Cage Induction Motor
Voltage/Frequency4000V & 4160V ± 10%/60 Hz
Type of EX-ProtectionClass 1 Division 2 Group A,B,C,D T3 (NEC or CEC)
Full Load Speed892 r/min (892 r/min)
No Load Current108 Amps

Standard Equipment

  • Bearing RTDs for temperature monitoring
  • Insulated non-drive end bearings to reduce bearing currents
  • Anti-friction on 1500 hp (optional)
  • Designed for minimal vibration
  • Dynamic balancing at full operational speed
  • Fabricated copper squirrel cages
  • 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