Reliable shaft grounding to prevent spark erosion and reduce maintenance costs. Althen's Propeller Shaft Earthing Systems provide a low-resistance connection between the propeller shaft and the ship’s hull. This safely discharges electrical currents, preventing harmful potential differences that can lead to spark erosion in propeller blades and shaft bearings.
Propeller shaft earthing system
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What are the advantages of our earthing system for propeller shafts?
Long service life of the system due to the high silver content in the brushes
Single or double brush holders possible
Low ohmic resistance due to wide slip ring in combination with the two almost pure silver brushes
For variable shaft diameters Ø100 - Ø1400 mm.
Special monitoring set (also available as a complete solution)
How the propeller shaft earthing system works
In order to direct the electrical current that flows through the propeller shaft to the hull of the ship, a proper propeller shaft grounding system contains parts that have a very low electrical resistance. The main component of the Althen PSE System consists of is a copper slipring with a solid silver inlay that is supplied with two stainless steel clamping bands including dedicated connectors. Furthermore, a brush holder is supplied which holds two silver/graphite brushes (80% Ag) that run over the silver track of the slipring. The brushholder is connected to the hull of the ship by means of an earthing cable. It has been proven that this set ensures optimal electrical continuity, which reduces total cost of ownership.
