| Siemens Offers An Integrated Drive System with An Open Cooling Circuit
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Siemens Offers An Integrated Drive System with An Open Cooling Circuit

Based on the concept of fully integrated drive system (IDS), Siemens has introduced an environmentally friendly integrated drive system consisting of a Simotics FD motor and a water-cooled Sinamics S120 inverter. The system uses an integrated cooling concept, the available industrial water into the transmission cooling water, so that equipment, motor and inverter to share the open cooling circuit. The shared cooling loop allows the drive to eliminate the need for a recirculating cooling link, dramatically reducing the space required while improving economic and energy efficiency.

This flexible transmission system can meet the complex needs of steel, automotive and process industries, as well as marine and marine applications.


Water cooling is an effective method of cooling motors and inverters, and is very important in the process industry. Siemens has introduced an efficient integration concept that minimizes water quality requirements. This means that any available water can be used for driveline cooling, including industrial water and treated river water commonly used in industry.

Since the entire system is resistant to oxygen enrichment in the cooling water, it can prevent harmful oxidation. No additives are required in the cooling water, which not only reduces the environmental impact of the drive system, but also simplifies commissioning and maintenance. The use of copper-nickel alloy to ensure that the transmission system corrosion resistance and anti-microbial growth, thereby enhancing the system’s durability.

In addition, water-cooled integrated cooling of the motor and frequency converter can improve cooling efficiency and significantly reduce the need for costly air conditioning systems. Waste heat can be used effectively to improve the overall energy efficiency of the system and to create potential for energy recovery (depending on the specific application type). Because the frequency converter and the electrical machinery may easily realize the high protection rank, this set of water cooling system can achieve the highest reliability even in the harsh environment.

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