Industrial Automation

Soft starters - SI-HDN - Solcon-IGEL

The SI-HDN Soft Starter was developed to start motors in the most demanding applications. Advance features such as enhanced motor protection, starting curves, unique voltage measurement and many years of field proven reliability makes the SI-HDN the best choice for starting medium voltage motors.

The SI-HDN 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. 
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The SI-HDN 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, among others.

Solcon-IGEL offer a wide range of solutions around the Soft Starter:
Solcon-IGEL developed unique solutions for special applications such as Multi-start, redundancy systems, and marine models.


Starting & Stopping
  • Soft start and soft stop;
  • Current limit ;
  • Torque & Current Control ramps ;
  • Pump Control characteristics;
  • Pulse (kick) start;
  • Tacho/encoder feedback (option);
  • Dual Adjust - 2 start/stop characteristics for varying loads, two speed motors, etc.

Set-up & Supervision of a Medium Voltage Soft Starter
  • Illuminated LCD with 2 lines, 16 characters each;
  • Selectable languages: English, German, French or Spanish;
  • The LCD displays motor current, fault description 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 running;
  • Motor soft stopping;
  • Motor stopped;
  • Test Mode Activated;
  • Dual Adjust mode;
  • Fault.


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.


Typical Applications for a Medium Voltage Soft Starter
  • Fans and centrifuges;
  • Conveyors and monorail systems;
  • Pumps, Compressors and Chillers;
  • Starting large motors from weak power supply (diesel generators, long supply lines, etc.).

Marine & Offshore Applications for a Medium Voltage Soft Starter
  • Thrusters;
  • Cargo Pumps (LNG, LPG, etc.);
  • Water & Ballast pumps;
  • Refrigeration compressors;
  • Hydraulic pumps & power packs;
  • Main Propulsion (Variable Pitch Propellers).

Ref. A07723119
F.Fonseca is the representative of Solcon-IGEL in Portugal.
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