Medium Voltage VFD Motor Controller

Liquid Cooled Components
Active Front End - No Transformer
3300 - 6900 VAC
700 - 2500 HP

4160 Volt VFD Underground Motor Controller

• Skid-Mounted Continuous Weld Design
• Input and Output Couplers Standard
• Rubber Tire Option
• Voltages from 3300 to 6900 AC
• Horsepowers from 750 to 2500
• Regenerative Applications Standard
• Constant Torque Duty - 150% Overload Standard
• Custom Design Allows for 250% Overload

PowerFlex 7000 Kit
Rockwell Automation PowerFlex 7000 Liquid-Cooled Direct-to-Drive kit packaged for Underground Use

• Active Front End (AFE) is Regenerative - Standard
• AFE means no Integral Transformer Required
• Direct-to-Drive (D2D) means 4160 vac In and 4160 vac Out to Motor
• Liquid Cooled Components Stay Cooler and Cleaner = Longer Life
• Reduces Harmonics on Electrical Systems

 Liquid Cooling for Longer Life!

• Closed-Loop De-Ionizing Liquid Cooling
• Integral Flat Plate Heat Exchanger Keeps Closed-Loop System Clean and Contained
• Flange Fittings for Mine Cooling Water Input and Hot Water Return
• Redundant Pumps for Ease of Maintenance
• Controls Monitor Temperature, Pressure, and Conductivity of Cooling Liquid

Underground Mining Equipment VFD Motor Controls

• Face Conveyor and Stageloader Applications
• Torque and Speed Control
• Enhanced Overload Capacity
• Allows Face Conveyor to Operate at Reduced Speeds:
  • Minimizes Chain Wear by up to 40%
  • Reduces Energy Costs
  • Extends Time Between Rebuilds
• Extreme Overload Capabilities:
  • PowerFlex 7000 Kit May be Customized
  • Normal Duty at 110%, Heavy Duty at 150%
  • Mine Duty at 280% Overload for 20 seconds of Each 120 Seconds
  • 6.6 kv Rectifiers with Oversized DC Link Choke and Input Line Reactor
• Modular Liquid Cooled Design:
  • Used in Multiple Motor Configurations, Add or Remove Motors as Required
  • Separate Controls in Skid or Wall Mounted Configuration
  • Closed Loop Liquid Cooling System Keeps VFD Cooler and Cleaner for Increased Life and Reliability
  • Motor Leads Up to 10 KM

4160 Volt VFD for Underground Belt Conveyor Controls

• Modular Design Provides Flexibility in Number of Motors Used
• Main or Booster Applications
• Torque and Speed Control
• Unlimited Conveyor Start Time Minimizes Belt Tensions:
  • Minimizes HP Required and Conveyor Component Sizes
  • Reduces TakeUp Requirements
  • Extends Belt Life
• Allows Conveyor to Operate at Reduced Speeds:
  • When Less Than Design TPH is Required Conveyor Speed May Be Reduced
  • Belt Inspection Speed for Maintenance
• Modular Liquid Cooled Design:
  • Used in Multiple Motor Configurations, Add or Remove Motors as Required
  • Separate Belt Controls in Skid or Wall Mounted Configuration
  • Closed Loop Liquid Cooling System Keeps VFD Cooler and Cleaner for Increased Life and Reliability
• Lower Electrical Harmonics:
  • Active Front End Provides Regenerative Ability
  • Active Front End Meets IEEE-519 Requirements
  • SGCT Devices Use Slower Switching Frequencies Reducing Common Mode Noise
  • Eliminates Need for Drive Isolation Transformers
  • Eliminates Harmonics Damage to Electrical Distribution Equipment
  • Motor Lead Lengths Up to 10 KM
• Reduces Installation Cost of Low Voltage:
  • Saves on Cable Cost
  • Smaller Cables Reduce Installation Time
  • For 400' of Cabling:
    • Saves Over $70,000 in Cable Cost
    • Requires Less Than 1/3 of Time to Install or Move

View/Download Medium Voltage VFD Powerpoint Presentation

For more information, please contact: sales@system-controls.net.