HRVS-DN Medium Voltage soft starter Advantages at a Glance for the HRVS-DN Medium

WEM medium voltage soft starter is considered as the most reliable soft starter in todays' Industrial and Marine markets ? The HRVS-DN is a third generation, digital, Medium Voltage Soft Starter, designed for use with standard MV asynchronous and synchronous motors. This highly sophisticated soft starter ensures smooth, step-less acceleration and deceleration, eliminating high inrush current and damaging mechanical torque on startup and mechanical wear on stopping. The HRVS-DN is available as a stand-alone product or as part of a complete system including Line and/or Bypass Contactors. Additional options for medium voltage soft starter include Load Break Switch, Motor Protection Relay, Digital Multi-meter, etc.


We can customize our medium voltage soft to provide for every application 

Advantages at a Glance for the HRVS-DN Medium Voltage Soft Starter


• Eliminates high inrush current and high mechanical torque on startup.

• Soft, stepless acceleration & deceleration.

• Unique starting & stopping characteristics.

• User friendly, straight forward set-up and operation.

• Sophisticated motor protection package.

• Heavy duty design: 50°C ambient temperature.

• Innovative low voltage test mode - full function-testing with a small L.V motor, using LV mains.

• Advanced Electronic Potential Transformer utilizing Patent Pending "wireless" fiber-optic controlled firing system.

• Each starter is tested for Partial Discharge (corona) to ensure long term reliability.

• Power factor capacitors can be connected directly to the upstream contactor.

• IP30-standard, higher protection by special order.

• Two optional methods of delivery: Chassis type for self assembly or Complete system

• RS485 Communication with MODBUS, MODBUS/TCP, PROFIBUS or Device-Net protocols (others available on request)

• Wide 45-65Hz Auto-tracking frequency range realized by special software with unique hardware arrangement.

(designed for Marine, Offshore and Generators operating under continuous frequency fluctuation)

• Torque and current starting and stopping characteristics.

• Pump control software.

• Analog output option.

• Motor Insulation Protection option (with programmable alarm and trip levels via seperate additional output).

Medium Voltage Soft Starters Range: 2300-7200V, 30-3000A