Rotating Machines

Low speed synchronous motors 8 poles and above

A flexible technology to adapt to multiple applications' requirements


We offer a full range of horizontal and vertical synchronous motors, including direct-drive high torque density motors at speeds as low as 20 rpm.

We can easily adapt our standard product platforms to cater for many fixed speed applications with any purposed starting methods including direct online, auto-transformer or electronic soft starting.

GE has extensive experience in oil & gas, marine, industry and other applications with large low speed motors offering lower weight and inertia advantages.

Our worldwide installed base for synchronous motors accounts for over 600 units and 5,500 MW of power.


Customizable configuration
  • Modular cooling system: CACA, CACW, TEPV, WPII, ODP
  • Ability to adapt to extreme environmental conditions: -40°C to +55°C ambient temperature, altitude > 1,000 m
  • Safe and hazardous area
  • Fixed speed 50/60 Hz
  • Variable speed application –System approach for VSDS
  • High load inertia starting
  • Direct on line starting with limited voltage drop on the network (low inrush current)
  • Limitation of current fluctuation/pulsating torque for reciprocating compressors
  • Compliance to high level specifications
  • Compliance to international standards (IEC, API, NEMA, CSA, DNV, ABS, ...)
Robust reliability
  • Improved stator cooling with pin vent technology and efficient rotor cooling to avoid hot temperature spots for a longer operating lifetime
  • Improved insulation system to reduce partial discharge
  • VPI with low Volatile Organic Compounds resin is applied to the complete stator and attached cables
  • Full length slot wedges
  • Removal stator core for simple stator replacement
General Electric
Exciter and control:
  • AC excitation control system for VFD supply or VFD starting
  • DC excitation control system for direct on line starting and fixed speed application
  • Brushless excitation for minimum maintenance and maximum reliability in hazardous areas
  • Excitation control cubicle according to customer requirements (redundancy, protection relays...)
  • Single bearing or dual bearings
  • End-shield sleeve bearings or pedestal sleeve bearings
  • Jacking oil units integrated or separated


  • Power factor leading or lagging
  • Higher efficiency than induction
  • High power density
  • Designed for RAM (Reliability Availability Maintainability)
  • Fully customizable
General Electric

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