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Medium Voltage Soft Starters: HRVS-DN

Ratings: 2300-15000V, up to 48MW
The HRVS-DN is a reliable, heavy duty soft starter and the ideal solution for medium voltage motor
applications. Sophisticated, digital motor control ensures smooth acceleration and deceleration
as it minimizes the effect of high in-rush current and mechanical torque shock.

Setting a New Standard

The HRVS-DN is the latest generation, digital Medium Voltage Soft Starter designed for use with standard MV AC induction motors. With advanced features such as enhanced motor protection, starting curves, unique voltage measurement and many years of field-proven reliability, the HRVS-DN is the best choice for starting medium voltage motors in the most demanding applications.

Advanced Features


  • Range 2300-15000V, up to 48MW
  • Heavy duty design up to 50°C ambient rated
  • Unique starting & stopping characteristics
  • Advanced motor protection package
  • User friendly, simple installation
  • Enclosures IP31-65 EX
  • Synchronous motor starting utilizing Solcon’s unique module
  • Innovative Low Voltage test modes
  • Advanced Electronic Potential Transformer
  • Unique fiber-optic firing system
  • Each and every Soft Starter is partial discharge tested
  • Communication: Modbus, Profibus, Devicenet, others by request
  • Frequency auto tracking 45-65Hz

Typical Applications


  • Turbo blowers
  • Sinter fans
  • Centrifugal blowers
  • Blast furnace blowers
  • Wind-tunnel drive
  • Gas compressors
  • Turbo compressors
  • Screw compressors
  • Pipeline compressors
  • Cryogenic compressors
  • Centrifugal compressors
  • Reciprocating compressors
  • High pressure injection pumps
  • SAG mills
  • Ball mill systems



  • Too many starts & stop inhibit time
  • Long start time (stall prevention)
  • Electronic overload with selectable curves
  • Electronic Shearpin
  • Motor overcurrent protection
  • Starter overcurrent protection
  • Undercurrent protection
  • Current unbalance
  • Ground Fault
  • Phase Loss
  • Phase sequence and over/underfrequency
  • Under/over voltage
  • Shorted SCR & incorrect connection
  • Start or over temperature

Starting & Stopping

Start and stop your toughest applications utilizing our world renown “Pump Control Program.” Choose the most effective curve for acceleration, deceleration and adjust for final torque:

Pump Curves
  • Soft start and soft stop
  • Current limit
  • Torque & Current Control ramps
  • Pump Control Characteristics
  • Pulse (kick) start
  • Tach-encoder feedback (option)
  • Dual adjust – 2 start/stop characteristics for varying loads, two speed motors, etc.
  • Multi-motor control models

Setup is Simple

  • Illuminated LCD with 2 lines, 16 characters each
  • Selectable languages: English, German, French, Spanish, Russian and others. Upon request with HMI
  • The HRVS-DN ApplicationLCD displays motor current, fault descriptions as well as statistical data
  • Easy set-up using six soft-touch keys to change preprogrammed default parameters
  • Eight LEDs for a quick status display:
  • Control voltage ON & Self test OK
  • Motor soft starting
  • Motor stopped
  • Motor running
  • Motor soft stopping
  • Test Mode activated
  • Dual Adjust mode
  • Fault


  • Last starting period
  • Last start maximum current
  • Total run time
  • Number of starts
  • Last trip
  • Trip current
  • Total number of trips
  • Historical trip event recorder (10 event conditions)

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