GE Aftermarket Catalog

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Motor Control Centers3
Aftermarket Catalog 3-21
Prices and data subject
to change without notice
Motor Control Centers
GE CR 7069 Synchronous Motor Control Field Panels
GE CR 7069 Synchronous Motor Control Field Panels
Designed to replace existing synchronous motor exciters for GE or other manufacture
models, GE Synchronous field panels include state of the art digital controls, long
lasting SCR switching devices, communications and many optional features. High
quality hardware, solid experience with synchronous motor controls and GE installation
service will ensure high reliability, better controls, enduring productivity and quick pay
back on upgrade investments. GE Field Panels can be provided fully assembled in their
own enclosures for quicker installation and hook up, or as kits that GE Engineering
Services, OEMs or other integrators may install into existing enclosures.
GE Limitamp Synchronous Field Panels are offered for both brush and brushless
synchronous motors. Both types of field panels are equipped with the GE Multilin® SPM
solid-state synchronous field application and protection module. The SPM replaces older
discrete devices such as DC current and voltage relays, DC meters, etc. More compact
and reliable, the SPM controller provides digital synchronous motor control and
protection functions including:
—Stator squirrel-cage type starting protection
—Power factor and pull-out running protection
—Field application control that maximizes pull-in torque (for brush-type machines only)
—Digital displays of motor running line current and power factor are featured along with
a keypad for entering set-point parameters.
—Available options include field loss protection, exciter voltage check protection, field
amps display, exciter volts display, incomplete sequence protection, and power factor
regulation when used with compatible SCR type variable field exciters.
—Digital displays and motor status and electronic communications
CR7069-A3 Brush, Collector-ring, type Synchronous Motor Field Panels
The GE CR7069-A3 field panel interconnects with a separate motor controller or circuit
breaker motor feeder to provide the complete control necessary to control and protect a
collector-ring (brush-type) synchronous motor.
Basic features
NEMA 1 (standard) indoor floor mounted enclosure
—GE Multilin® SPM drawout relay with the following standard features:
—Most favorable angle field application
—Graduated squirrel-cage protection
—Power factor/pull-out protection
—Selectable ride-thru or re-synch feature
—Loader relay output
—Motor AC line amps display
—Motor running power factor display
—Field programmable set-points by keypad
—Field amps display
—Exciter volts display
—Incomplete sequence protection
—Field current loss protection
—Field winding over-temperature protection
—MODBUS RTU RS485 communication feature
—Field application and discharge contactor
—Field discharge resistor (separately shipped for top-of-panel mounting)
—Interface provisions for remote motor controller or circuit breaker motor feeder wired
to terminal board.
Contact your local GE sales or service
representative for pricing and availability.