SAC700 tunnel thruster Ø412mm 400V

The SAC700 tunnel thruster Ø412mm 400V is a Sleipner AC electric tunnel thruster rated at 700kg of thrust, for use as a bow or stern thruster on boats of 95-145 ft / 29-44 m. It is designed for vertical mounting and for continuous operation without downtime, making it suited to heavy-use commercial and industrial vessels. The unit is approved for installation on vessels classified by DNV.

Scope of supply

Delivered as a complete ready-to-install kit for connection to the Sleipner S-Link™ control system, configured for the specific vessel with no further VFD setup required:

• PDC-301 drive controller (Modbus link to the VFD, real-time data logging and fault history, firmware upgrades via S-Link™)
• Variable frequency drive (VFD)
• Gearleg with propellers and bracket
• Flexible coupling
• AC motor
• EMC filter

Key features

• Twin counter-rotating propellers for maximum thrust in a minimal tunnel diameter
• Q-PROP™ five-bladed skew propeller: noise reductions of up to 75% measured in controlled environments, 20-40% expected in average installations
• PRO™ variable speed control with hold-function; in a dual bow/stern system one button press holds the vessel alongside the dock
• S-Link™ CAN-based control system with waterproof, keyed and colour-coded plug connectors; monitors thruster condition and gives continuous operator feedback; can combine AC and hydraulic thrusters on one control cable
• Flexible installation at any angle on the tunnel
• Flexible coupling compensating for minor misalignment between motor and gearleg shafts
• Gravity feed lubrication: gearleg supplied with oil from a separate reservoir above the waterline for oil-level monitoring

Technical data

• Item code: SAC700/412-C-4-V
• Power supply: 400V AC (supply range 380-440V 3-phase)
• Power output at nominal voltage: 42kW / 56.3hp
• Continuous thrust (nominal): 700kg / 1543lbs
• Tunnel internal diameter: 412mm / 16.22in
• Height x length x width: 964mm / 37.95in x 439mm / 17.28in x 356mm / 14.02in
• Minimum water depth: 620mm / 24.41in
• Tunnel length: min. 550mm / 21.65in, recommended 800mm / 31.50in
• Tunnel wall thickness: 12mm / 0.47in to 16mm / 0.63in
• Net weight: 205kg / 451.95lbs

Options

• Low harmonic VFD option reduces total harmonic distortion to less than 5%, helping keep the electrical network clean, prevent interference with other equipment and communications, and reduce the need for generator oversizing
• Standard range built for 230V or 400V; other specifications available on request

Applications

Commercial vessels, motor boats and sailing boats of 29-44m / 95-144ft.