General Features
The ZÖLLNER ZET-Horn was the first piston type whistle on the world market driven by an AC 3phase motor. An essential component is the piston inside the cylinder driven by an AC3phase motor via connecting rod, crankshaft and gearwheels. The piston oscillates at a certain frequency which makes the air inside the sound projector vibrate in resonance to produce a clean sound audibel over a wide range.

Essentials
  • full compliance with the Colregs 1972, Annex III
  • type approved by all wellknown international authorities and classification societies
  • application:
    • vessels of class I and II, between 75 m and over 200 m in length
    • special design for arctic class available
    • special military design available
    • land alarm, i.e. bunker stations, oil refiner ies, airports, power plants, factories
  • system voltage: AC 3phase(230V/380V/440V/690V)/control box AC 1phase or DC.
  • entirely made of best non-corrosion, seawaterresistant materials
    • gearwheels made of wear-resistant upgraded steel (no plastic!)

 

Advantages
  • decades of experience
  • best material and workmanship - made in Germany
  • simple but matured design
    • easy exchange of all parts with onboard tools
    • steady lubrication with standard grease (no oil!)
  • cylinder suspended ver tically to allow optimum discharge of spray, flood, condensation water or melted snow
  • motor heating to avoid condensed water included as a standard,
    • no additional cable required!
  • easy installation
    • only one three-core cable required for connection to board mains!
    • relatively low weight
  • not affected by voltage and frequency fluctuations of board mains