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RVS-DN
Industrial Soft Starter for Demanding Motor Applications
The RVS-DN heavy-duty soft starter is an advanced three-phase motor soft starter designed for controlled starting and stopping of standard squirrel cage induction motors in demanding industrial applications. It supports both three-phase three-wire and six-wire motor configurations and is engineered for environments where reliable industrial motor starting and protection are critical.
The RVS-DN provides an effective method of reducing starting current and torque during low-voltage motor startup. By gradually increasing the voltage supplied to the motor, the soft starter enables smooth acceleration while minimizing mechanical stress on connected equipment and reducing electrical disturbances on the power network. This controlled starting process improves equipment reliability and extends the service life of motors, pumps, compressors, and other driven systems.
Smooth Motor Starting and Reduced Inrush Current
This industrial soft starter gradually increases the voltage applied to the motor during startup. The controlled voltage ramp allows the motor to accelerate smoothly while drawing only the current required for motor starting. As a result, mechanical stress on shafts, couplings and pipelines is reduced, while electrical disturbances on the power supply network are minimized.
Soft starting also helps protect driven equipment by eliminating sudden torque shocks that can occur during direct-on-line motor starting.
Designed for Harsh Industrial Environments
The RVS-DN soft starter is designed for operation in demanding applications and harsh environments. Its robust design allows reliable operation in industries such as marine propulsion systems, mining installations, water pumping stations and heavy industrial process plants.
These environments often require reliable high-power motor starting under severe conditions, where both equipment protection and operational continuity are essential.
Advanced Digital Motor Control and Protection
The RVS-DN incorporates third-generation microprocessor-based digital control to provide precise motor management and advanced protection functions. The digital control system enables features such as pump control for preventing water hammer, slow-speed operation for maintenance and positioning tasks, and electronic reversing for increased operational flexibility.
In addition to these control capabilities, the system provides comprehensive motor protection functions to ensure safe operation in demanding industrial applications.
Typical Applications
The RVS-DN heavy-duty soft starter is widely used for controlled starting of industrial motors in applications such as:
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water and wastewater pumping systems
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mining conveyors and crushers
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marine propulsion and thruster systems
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compressors and blowers
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industrial processing equipment
Features
- Robust construction
- Highly advanced starting & stopping characteristics
- User friendly set up and operation
- Line or Inside delta connection models up to 690V
- Ambient operating temperature: up to 60°C
- Motor insulation tester
- Communication: Modbus, Profibus, DeviceNet
- Thermistor input
- Analog output 45-65Hz
- Auto-tracking frequency range
- Can be operated without bypass contactor at 50°C up to 820A
- Designed to meet Marine Industry standards up to 3000A
Options
Advantages
- Soft start and soft stop
- Soft, stepless acceleration & deceleration
- Current limiting
- Torque & current control – for optimized acceleration and deceleration
- Pump control program
- Dual adjustment – two start/stop characteristics
- Slow speed with electronic reverse
- Comprehensive protection package
- Shear pin (jam) with adjustable delay
- Electronic overload with selectable curves
- Under current
- Phase loss
- Phase sequence and Under/Over frequency
- Under/Over voltage
- Load loss (motor not connected)
- External fault
- Shorted SCR
- Starter over temperature protection
- Motor insulation test (option)
- Motor thermistor (option)
- When using “Preparation for Bypass” all protection remains active
Applications
FAQ
The RVS-DN is designed for low voltage heavy-duty industrial applications, ensuring soft motor starts while protecting mechanical systems and extending motor life.
The RVS-DN supports motors from 230V to 1000V, and up to 1000A (standard), with higher ratings available upon request.
The RVS-DN is suitable for harsh environments due to the fact that it includes heavy-duty SCRs, high thermal capacity, optional conformal coating, and customizable enclosures for marine, mining, and oil & gas applications.
The RVS-DN includes protection for phase loss, phase imbalance, overcurrent, over-temperature, and motor overload.
Yes. The RVS-DN comes with an internal bypass contactor to reduce power dissipation and simplify installation.
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Solcon-IGEL is a developer and manufacturer of soft starters, heat control systems, and motor control and protection solutions for heavy industry. Our power electronic technologies are engineered for reliable operation across a wide range of industrial motor applications worldwide.
