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Bearing
Upper Endshield
Chamber
(Enclosed or Open Types)
Frame
Stator
Shaft
Rotor Lamination
Lower Endshield
Vertical
Accurate Frequency Response Design
System resonance can shorten the life of your equipment.
GE invested in the development and calibration of a new
Reed Critical Frequency (RCF) prediction tool. It arms our
engineers with the accurate data they need to create custom
designs for specific application challenges.
Frame Design - Benefits
Large inspection windows on both ends of the frame ensure
easy maintenance and inspection access. The modular frame
design accommodates multiple cooling, bearing loading and
protection options without changing
the motor stator frame.
Rotor Design
Shaft FEA modeling (including Torsional, Radial and Axial
loads) help ensure rotor designs meet specifed application
requirements.
Bearing Design
API compliant options are available for the rolling
element and sleeve bearing
Wound Rotor
Energy Recovery System
GE wound rotor induction motors are designed to operate
with Slip Energy Recovery drives within a standard range of
80% to 110% of the rated speed. Every design is optimized
to suit each application and to provide maximum energy
savings, effective speed control, and high reliability.
Rotor Construction
The rotor has a three-phase insulated winding. Rotor winding
terminals are brought out through rotating slip rings and
stationery brushes. These terminals are used to connect
an external resistor in series with the rotor winding
in order to control the motor accelerating torque and
associated current.
Brush Lifting Device
In a traditional application as the motor achieves nominal
speed, the starting resistor is shorted out through the brushes
between the slip rings. This shortens the life of the brushes
and adds extra wear in the motor. An optional solution from
GE, called a Brush Lifting Device, is an integrated mechanism,
which shorts the slip rings and lifts the brushes at nominal
speed to avoid this wear.