Slip Ring EXD with ATEX-approval

• Aluminium housing
• 4 to 7 rings
• Option: more rings, anti-condensation heater, cable with connector

The slip ring EXD is designed especially for the usage in silos. Various materials for rings and brushes allow the transmission of high electrical power, of signals and of data for different BUS-systems.

The EXD is approved for EX-Zone 21 and 22:
Zone 21 is an area, in which under normal operation a potentially explosive atmosphere in form of a cloud consisting of air and flammable dust can appear occasionally.
Zone 22 is an area, in which under normal operation a potentially explosive atmosphere in form of a cloud consisting of air and flammable dust can appear rarely or only short-term.

The cable exit of the brushes is realized by max. 2 axial explosion proof cable glands at the bottom side of the base. The cables of the rings are led through the central pipe with an inner diameter of 42mm, also by using explosion proof cable glands. The rings are already pre-wired with a standard cable length of 2m. Customized versions including plug and socket solutions are available on request.

The division of rotator and stator happens in the centre of the base part. In a radius of 75mm the rotating central pipe is located with the above inside the housing mounted rings on it. The brushes are fixed on top of the base part.

Two module sizes with power ratings of 7A and 34A are available. Rings and brushes are made of copper-graphite and can be covered with a silver or gold coating. This leads to a higher contact performance and influences the abrasion characteristics in a positive way.

Especially for EXD we offer an anti-condensate-heater to avoid any condensation water or corrosion.