The water-cooled SINAMICS S120 chassis units are specifically designed for the operation of shared cooling circuits for the plant, motor, and converter.

They are especially suitable for applications where installation space is restricted and environmental conditions are harsh. They ensure efficient heat dissipation.

The main difference to the current liquid-cooled SINAMICS S120 chassis units is the operation with a significantly reduced water quality. The components are resistant to a proportion of oxygen in the cooling water. Generally, the water usually used in industry can also be used for cooling the drive system. Additives such as antifreeze or inhibitors are not required.

The new cooling concept saves space and costs. Water cooling for motor and converter ensures that less space is needed, as the converter cooling unit can be dispensed with due to the shared cooling circuit. This results in low acquisition and operating costs.

The devices with copper-nickel heat sinks are fitted with rail profiles at the bottom and can be stored on the floor in a way that is easy to assemble.

The product portfolio includes the following water-cooled SINAMICS S120 built-in units:

• Power Modules
• Active Line Modules
• Active Interface Modules
• Motor Modules

The associated system components such as motor reactors and dv/dt filters plus VPL are air-cooled.

Example of a drive line-up with SINAMICS S120 water-cooled units