MV DRIVE AT 27

MV DRIVE AT 27

MEDIUM VOLTAGE INVERTER AC three phase induction motors AC three phase synchronous motors

  • wide power range 250kw to 20000kw   
  • wide power supply voltage range ,3.3KV,6.6KV,11KV   
  • input frequency 50-60Hz   
  • enclosure IP30, IP43, IP54,Nema 3R   
  • THD≤3%   
  • cell bypass    
  • cascade control    
  • bypass cabinet (optional)    
  • smooth drive bypass    
  • protection against single multi-phase-to-earth faults    
  • cabinet and box type    
  • compliance with the requirements of IEE-519    
  • LCD displayer    
  • efficiency ≥95%    

      

Functionality

  • soft motor start and stop with preset acceleration and braking rate (Hz/s) , limiting inrush current
  • ((manual)) , ((Automatic)) or ((Automatic with preset time)) modes depending on whether the motor need to start automatically after a fault occurs or await the operators command ((current optimization)) mode to provide automatic output voltage adjustment in order to  get the minimum full load current at fixed output frequency       
  • start and stop according to a preset time schedule
  • local distant or ACS control modes enable the operator to choose the most convenient control source
  • change output frequency according to a preset time schedule
  • cascade starting of several motors
  • (changing the motors speed of rotation according to a feedback from a technological parameter sensor (pressure, temperature ,etc
  • self-diagnostic system enables the drive to find the exact place a failure occurs and save details of the failure in question in a log
  • measures consumed energy restart after short time supply drop out (> 2.5 s) and continue operation Motor starting modes:
  • soft– with adjustable rate of the motor acceleration
  •  impact , swinging , hard start Motor deceleration may be as follows:
  • dynamic braking by a motor with adjustable deceleration rate.
  • Breaking by run out with a protection against restart within 5 seconds