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INSTALLATION MANUAL

Installation data for the Sleipner Side-Power SAC1700 AC electric tunnel thruster (679 mm tunnel, 1700 kg thrust): tunnel and motor dimensions, gear leg drilling, torques, blower-ventilated motor, gravity or pressure oil filling, VFD and power cabling.

DocumentSleipner SAC1700 AC Thruster Installation Manual
FormatPDF · 36 pages · 4.8 MB
LanguageEnglish
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Installation ManualPDF · 36 p.Installation manual – SAC1700 (document 8276)PDF · 32 p.
SpecificationsDimensionsInstallationGear OilElectricalProducts
Sleipner SAC1700 AC Thruster — Installation Manual

SAC1700/679-C with Radial Blower Ventilation

Item SAC1700/679-C-4(L)-H(V)-TT
Tunnel inside diameter 679 mm / 26,7"
Thrust nominal, continuous 1700 kg (max. thrust n/a)
Motor output / S1 power 99 kW; motor IP 23
Supply 3-phase 380-500 V (-4) or 380-415 V (-4L, low harmonic VFD)
Current draw max. (400V) 206 A
Generator load max. 120 kVA (recommended generator capacity indicatively 2 x this value)
VFD ACS880-01-240A-5, frame R8, IP 55, 74 kg (-4); ACS880-31-206A-3, frame R8, IP 55, 124 kg (-4L)
Blower 400V 50Hz 3-phase, 0,75 kW, 1.64 A; required cooling air flow 1300 m³/h
Gear leg DNV type approved (certificate TAM0000DT); gravity feed with on-water oil change
Galvanic separation Not integrated – optional galvanic separation kit

The second SAC1700 manual in the downloads (document 8276 rev 1) also covers SAC1700/679-I versions, but many of its values are still "TBD"/"TBC".

Tunnel and Motor Dimensions

Code Description Value
ID (min) Internal tunnel diameter, min. 679 mm
T Tunnel thickness min. / max. 12 / 25 mm (manual 8276: 15 / 25 mm)
TL Tunnel length min. / recommended 1000 / 1200 mm
WD Water depth recommended / min. 1200 / 1000 mm (manual 8276: min. 900 mm)
H Height (varies with tunnel outside diameter) 1390 - 1405 mm
W × L Motor width × length 585 × 661 mm
(ah) Gear centre to first mounting point, horizontal 976 mm
(b) Gear centre to motor top 1757 mm
(x) Tunnel bracket length 805 mm
Weight Assembly / motor 735 kg / 450 kg

The lbs column for the weights is misprinted in the PDF (it repeats inch values), so only kg are given here. Manual 8276 gives different motor data (H 1505 mm, W 567 mm, L 762 mm, assembly 1175 kg for the -C version).

Tunnel and Gear Leg

  • Position, tunnel length, deflectors and rounded tunnel ends (radius 10% of diameter; steel/aluminium hulls a 10-15% slope) as for the other SAC thrusters; coordinate the tunnel installation with a ship designer for hull strength.
  • Metal hulls: never mount without the Sleipner galvanic isolation kit.
  • Drill the centre hole first on the boat centreline: ØA 120 mm, B 105 mm, ØC 25 mm, D 54.8 mm, E 100 mm, F 127 mm, ØG 13 mm.
  • Generous sealant on both sides of the gasket; it must squeeze out continuously round the gear housing joint inside the tunnel. Eye bolts in the propeller and motor shafts help lift the gear leg into place; support it on a wooden block.
  • The gear leg is marked with a dot for the oil suction point: it must be at the lowest position (flip it 180° in horizontal installs if needed).
  • Oil or grease the O-rings, assemble bracket, gasket and gear leg, apply thread paste and tighten to 80Nm.

Propeller, Motor and Coupling

  • Fit one propeller only until oil filling is done. Parallel key up, approx. 1mm gap to the gear leg; grease only the thread (not the taper). Lock nut 400Nm without washer, remove, grease the washer face, refit to 400Nm and fold the tab washer. Anode hub bolts 25Nm.
  • Protection cover pressed fully down on the shaft and parallel key in place before the coupling.
  • Motor on a rigid separate bedding with cardan angle within +/- 1.5 degrees; in vertical installs the motor flange is the support (bracket designed with a naval architect).
  • Coupling: size 80, axial and radial bolts M16 x 50 at 220Nm +/-5%, L 203, axial tolerance +/- 1, angular 0.15° each joint, radial 0.5mm. The flange hubs are a tight fit and must be heated onto the shafts. Radial bolts first, then axial, torque wrench only.

Oil Tank and Filling

  • SAE 80W-90 API GL-5, about 6,5l including the container.
  • Container above the waterline by at least 20% of the waterline-to-tunnel-centre distance. Fit the oil (feed) tube and the bleed tube to their nipples on the motor bracket – their orientation differs between vertical and horizontal installs. No loops in the tubes.
  1. Gravity feed: open the oil container valve, close the fill valve, fill and keep refilling the container until the system is full (slow, narrow oil channels).
  2. Pressure feed: connect a filling device to the fill valve (3/8" BSPP), close the container valve, open the fill valve and fill at no more than 1 bar until the container level is correct and stable.
  3. Afterwards close and secure the fill valve, open and secure the oil container valve.

Oil change: open the fill valve with the tank valve closed, draw the oil out with vacuum on the fill valve, then refill as above.

Power and Control

Model Supply Max current Min. cable, temp class 70 / 90
SAC1700/679-C-4-H(V)-TT 380-500 V 206 A 150 / 95 mm² multi core
SAC1700/679-C-4L-H(V)-TT 380-415 V 206 A 150 / 95 mm² multi core
  • General indication only: the VFD and power cabling must be installed by certified electricians to the VFD manual, allowing for regulations, temperature, routing and length. Use shielded VFD motor cable.
  • The blower motor has its own yard-supplied circuit with 3-pole circuit breaker, contactor and motor protection (see the electrical diagram in the PDF).
  • PDC-301 commissioning, PMS integration, motor over-temperature limits (130°C thrust limitation, 150°C shut-down) and S-Link wiring follow the SAC procedure: the VFD runs a motor ID run on first start from local mode, then is switched to Remote.

Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.

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