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.
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Medium Voltage Soft Starter Solution for high-power compressors in Industrial Gases
Motor Ratings:
10kV 250A, 500A and 67 A / 6.6 kV / 630 KW / 50 HZ
Messer Haiphong Industrial Gases, a leading player in Vietnam’s industrial gas sector, required a reliable solution to start and control a large number of high-power air compressors operating in harsh industrial conditions.
Their goal was to improve motor protection, reduce electrical stress, and maintain stable system performance under continuous load.
Solcon-IGEL supplied HRVS-DN medium voltage soft starters for two distinct compressor installations—both critical to Messer’s production infrastructure.
Installation 1: 10kV High-Power Compressors
At MESSER HAI PHONG INDUSTRIAL GASES CO., LTD, the system included 12 high-inertia air compressors operating at 10kV, with motor ratings between 1MW and 5MW.
To manage the startup of these motors efficiently, Solcon-IGEL delivered:
- 3 x HRVS-DN Soft Starters
- Voltage: 10kV
- Current ratings: 250A and 500A
- Application: Large compressor loads with high torque demands
These MV soft starters offered a controlled acceleration profile, reduced inrush current, and minimized mechanical stress on the motors and connected systems.
Installation 2: 6.6kV Medium Compressors
The second system featured two air compressors, each operating at 6.6kV / 630kW / 67A / 50Hz.
Solcon-IGEL provided:
- 2 x HRVS-DN Soft Starters
- Voltage: 6.6kV
- Designed for continuous duty and high start-stop frequency
- Delivered with adaptive control algorithms and thyristor-based switching
This configuration ensured a soft, smooth motor start and stop, protecting both mechanical and electrical components and maximizing compressor uptime.
Results & Benefits
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Reduced motor inrush and torque shock
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Extended motor and compressor lifespan
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Enhanced system stability during frequent starts
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Flexible performance across 630 kW – 5 MW range
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Improved energy efficiency and reduced downtime
Why choose HRVS-DN?
The HRVS-DN medium voltage soft starter is engineered for high-inertia and mission-critical applications, offering:
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Dynamic torque control
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Customizable acceleration/deceleration ramps
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Advanced motor protection functions
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Proven reliability in industrial gas and compressor operations
Conclusion
Solcon-IGEL’s robust soft starter technology delivered a dependable and high-performance solution for Messer Haiphong’s diverse air compressor fleet. With installations covering both 10kV and 6.6kV motor systems, the HRVS-DN platform demonstrated exceptional versatility and reliability across multiple operating environments.
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