SOME OF THE ADVANTAGES OF STEPLESS SPEED CONTROL USING VVVF DRIVES

SOME OF THE ADVANTAGES OF STEPLESS SPEED CONTROL USING VVVF DRIVES
By Reva Cranes Crane for Projects December 21, 2017

SOME OF THE ADVANTAGES OF STEPLESS SPEED CONTROL USING VVVF DRIVES ARE AS LISTED BELOW:

  • ALL MOTIONS CAN BE OPERATED FROM 10% TO 100% OF THE SPEED.
  • ALL MOTOR PROTECTIONS ARE PROVIDED IN THE DRIVE.SOME OF THE PROTECTIONS ARE AS LISTED BELOW.
    • OVER LOAD OR OVER CURRENT PROTECTION
    • SINGLE PHASING PROTECTION.(CURRENT SENSING)
    • OVER TORQUE PROTECTION.
    • PHASE SEQUENCE PROTECTION.
  • MINIMIZED LOAD SWING.
  • EXCELLENT LOAD HANDLING CAPABILITIES.
  • NO CRANE SKEW.
  • OPTIMISED LOAD CURRENT DEPENDING ON THE LOAD BEING HANDLED. 
  • OVERALL POWER CONSUMED IS DEPENDANT ON THE LOAD CARRIED. I.E IF YOU HAVE TAKEN A 50T CRANE AND HANDLING 5T LOAD WITH IT, THE POWER CONSUMED WILL BE CORRESPONDING TO 5T ONLY.
  • SOFT START AND SOFT STOP REDUCING STRESSES ON CRANE  MECHANICALS, MOTORS AND BRAKES.
  • ENHANCED MECH BRAKE LIFE AS IT IS ONLY USED TO HOLD THE LOAD, STOPPING IS DONE ELECTRICALLY.
  •  ALMOST UNITY POWER FACTOR.

Download detailed presentation on advantages of VVVF Drives over slippring motors

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A thing well done is a reward in itself… when you begin with this philosophy excellence becomes a way of life, and you achieve more than you aimed for. Exemplifying this  spirit in  all its operation is REVA INDUSTRIES LTD. A company that has been set on a dynamic  track  record  ever since its inception, and has continued to move  from one  milestone  to another.  With  an  extremely  dedicated  team of enterprising engineers and   self-dedicated  workmen  as it’s  main assets.  It  manufactures  DG EOT Cranes,  Electric Wire Rope Hoists, Goliath Cranes, Jib Cranes,  Crane Kits,   Hazard  Area   Cranes & Hoists , Steel Mill Duty Cranes, Electric Winches, Transfer Trolleys, Electric Chain Hoist, Helical Gear Boxes, Geared Couplings, Geared Motors and Customized Material Handling Solutions.
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