Synchronous Motor Control Field Panels [BR]

CR 7069 Synchronous Motor Control Field Panels
Designed to replace existing synchronous motor exciters, whether GE or other manufacturer 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 insure 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.

Features and Benefits

CR7069-B3 Brushless Synchronous Motor Field Panels
The GE CR7069-B3 field panel interconnects with a separate motor controller or circuit breaker motor feeder to provide the control necessary to control and protect a brushless synchronous motor.
Features

  • NEMA 1 (standard) indoor floor mounted enclosure (60"H  32"W  30"D)
  • GE Multilin SPM drawout relay with the following standard features:
    - Locked rotor protection
    - Power factor/pull-out protection
    - Selectable ride-thru or re-synch feature
    - Settable time exciter field application output
    - Loader relay output
    - Motor AC line amps display
    - Motor running power factor display
    - Field programmable set-points by keypad
    - Exciter field amps display
    - Exciter volts display
    - Exciter field current loss protection
    - Exciter field winding over-temperature protection
    - MODBUS RTU RS485 communication feature
  • Variable autotransformer & and rectifier for max. 7 ADC, 125 VDC rated exciter field. Manual adjustment of the autotransformer is available from front of the enclosure door.
  • Motor exciter application relay
  • Interface provisions for remote motor controller or circuit breaker motor feeder wired to terminal board

Features and Benefits

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.
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.