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Electric - shaft drive
made in Austria
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Your boat has a shaft drive and you would like to replace the old diesel engine with an environmentally friendly, zero carbon and maintenance-free electric drive or you are planning a new building where a shaft drive system is the optimal solution - then our electric shaft drives EWG are the first choice. |
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You will find suitable electric shaft drives in the power range from 2.0 kW to 20 kW shaft power. If you need even more engine power, higher drive power is possible as a special design. |
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Or you would like to convert your drive system to a hybrid drive system - no problem, electric drive powers in the range of 2.0kW to 20kW shaft power are also possible here. This allows you to drive fully electrically in the lower power range, in which a combustion engine works very uneconomically, and you only use the diesel engine if you need higher drive power or the distance to be driven exceeds your battery capacity. |
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EWG-48-10-YAN, 10kW shaft drive with reducing gear 2,5:1, mounting compatible to Yanmar 3YM20 model range |
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Converting from a combustion engine to an electric drive is usually extremely easy: |
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First, all components of the old diesel engine, including the gearbox, engine control lever and tank system, if the the tank system are not required for a generator on board, must be removed, so that only the free end of the shaft remains unchanged. |
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In the next step the motor is mounted on the existing motor foundation, which may need to be adjusted using the adjustable flexible engine mounts supplied, aligned with the shaft and the shaft is connected to the motor using the clamp coupling (shaft diameter 25mm, adjustment required for other diameters). |
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If your new electric shaft drive is water cooled, the cooling system has to be connected, with fan cooled drives this is of course not necessary. |
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At last you have to connect the electric wiring, but this is a very easy thing. |
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In all shaft drives of the EWG series, the motor control unit is mounted directly on the engine rear wall, which also serves as a heat sink for the motor control unit. All parts, motor and control unit, are already wired, all you have to do is connecting the throttle and battery monitor via connectors, mount the main switch, the charger and connect the batteries. This completes the complete conversion and the new environmentally friendly drive system is ready for operation.
In all water-cooled EWG shaft drives, the motor control unit is water-cooled via the engine cooling circuit to ensure optimum operational safety.
The delivery contents:
- Maintenance-free electric BLDC-Motor with flexible engine mounts
- Flexible shaft coupllng for 25mm shaft (up to 10kW) or for 35mm shaft (20kW)
- Motor control electronics (Bluetooth-capable) ready for operation, mounted with main contactor, measuring shunt and main fuse mounted on the rear wall of the engine
- Battery main swich
- Single lever throttle EHS-U (standard version) with status-LED and kay switch
- Connection cable between EHS-U and control unit
- multifunctional battery management display.BMV712smart included shunt and 10m connection cable
- Documentation
In option “liquid cooling” the delivery contents additional:
- Electric motor with liquid cooling
- Motor control unit with liquid cooling heatsink
- electric cooling water pump for the freshwater system
- Cooling temperature control unit KWÜ01
- Temperature sensor forthe freshwater system
Heat excanger, fittings, hoses and seawater circuit pump are not a part of the delivery contents, but can optionally be supplied as a complete kit!
On request, we can also supply pre-assembled connection cable sets for the battery and charger connection for your ship with all the necessary components and detailed documentation with installation instructions, parts list and schematic.
Various chargers, variants of the single-lever throttles, various battery monitoring and display systems, tachometer and, of course, the necessary batteries are also available from us.
Shaft drives with reduction gear
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Typ |
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EWG-24-2.0 |
EWG-48-3 |
EWG-48-3-FK |
EWG-48-5 |
EWG-48-5-FK |
EWG-48-5-YAN |
EWG-48-5-YAN-FK |
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Power consumption (max) |
kW |
2,5 |
4,6 |
4,6 |
8,3 |
8,3 |
8,3 |
8,3 |
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Power output |
kW |
2,0 |
3,9 |
3,9 |
6,2 |
6,2 |
6,2 |
6,2 |
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Operating voltage (DC) |
V |
24 |
48 |
48 |
48 |
48 |
48 |
48 |
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Current consumption (max) |
A |
104 |
100 |
100 |
172 |
172 |
172 |
172 |
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Efficiency (max) at Pout |
% |
k.A. |
88 / 3,1kW |
88 / 3,1kW |
87 / 2,6kW |
87 / 2,6kW |
87 / 2,6kW |
87 / 2,6kW |
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Efficiency at Pmax |
|
k.A. |
86 |
86 |
74 |
74 |
74 |
74 |
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Motor technology |
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PMDC |
BLDC |
BLDC |
BLDC |
BLDC |
BLDC |
BLDC |
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max. tonnage freshwater (Sailingyacht / Motoryacht) |
t |
2 / 0,8 |
3 / 1,2 |
3 / 1,2 |
5 / 2 |
5 / 2 |
5 / 2 |
5 / 2 |
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max. tonnage saltwater (Sailingyacht / Motoryacht) |
t |
1 / 0,5 |
1,5 / 0,7 |
1,5 / 0,7 |
2,5 / 1,1 |
2,5 / 1,1 |
2,5 /1,1 |
2,5 / 1,1 |
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Cooling system |
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fan cooled |
fan cooled |
liquid cooling |
fan cooled |
liquid cooling |
fan cooled |
liquid cooling |
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Reduction gear |
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1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
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Part no. |
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6600000307 |
6600000303 |
6600000316 |
6600000304 |
6600000312 |
6600000309 |
6600000314 |
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Typ |
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EWG-48-10 |
EWG-48-10-FK |
EWG-48-10-YAN |
EWG 48-10-YAN-FK |
EWG-72-12 |
EWG-72-12-FK |
EWG-72-20-FK |
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Power consumption (max) |
kW |
13,2 |
13,2 |
13,2 |
13,2 |
13,8 |
13,8 |
24,5 |
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Power output |
kW |
10,5 |
10,5 |
10,5 |
10.5 |
12,1 |
12,1 |
21,7 |
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Operating voltage (DC) |
V |
48 |
48 |
48 |
48 |
72 |
72 |
72 |
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Current consumption (max) |
A |
277 |
272 |
272 |
272 |
194 |
194 |
345 |
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Efficiency (max) at Pout |
% |
83 / 5kW |
83 / 5kW |
83 / 5kW |
83 / 5kW |
90 / 5,4kW |
90 / 5,4kW |
84 / 20,7kW |
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Efficiency at Pmax |
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74 |
74 |
74 |
74 |
83 |
83 |
84 |
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Motor technology |
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BLDC |
BLDC |
BLDC |
BLDC |
BLDC |
BLDC |
BLDC |
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max. tonnage freshwater (Sailingyacht / Motoryacht) |
t |
10 / 4 |
10 / 4 |
10 / 4 |
10 / 4 |
20/8 |
5 / 2 |
20 / 8 |
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max. tonnage saltwater (Sailingyacht / Motoryacht) |
t |
5 / 2,3 |
5 / 2,3 |
5 / 2,3 |
5 / 2,3 |
10/4,6 |
2,5 /1,1 |
10 / 4,6 |
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Cooling system |
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fan cooled |
liquid cooling |
fan cooled |
liquid cooling |
liquid cooling |
liquid cooling |
liquid cooling |
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Reduction gear |
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1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
1 : 2,55 |
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Part no. |
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6600000305 |
6600000313 |
6600000310 |
6600000315 |
6600000311 |
6600000317 |
6600000308 |
Remarks:
- All engines of the EWG series are suitable for both, sailing yachts and displacement motor yachts. Due to the higher shaft speed, the engines of the EWD series are only intended for fast motor boats with suitable shaft bearings. Special versions of the EWD series with higher motor outputs are possible for gliders with very high speeds.
- The reduction gear of the motor series EWG can optionally be designed individually over a wide range, standard reduction: 1 : 2.55.
- In the case of water-cooled engines used in salt water, a dual-circuit cooling system or a sufficiently large finned cooler must be installed.
- The recommended maximum tonnage is specified for both sailing and motor yachts, separately for inland (freshwater) and sea (saltwater) use.
- The engines with the suffix "-YAN" are directly installation-compatible with the Yanmar diesel engine series 3YM20. Both, the distance between the fastening points of the engine mounts and the distance between the engine mounts fastening points on the foundation and the shaft flange and center of the shaft are identical. This reduces the conversion effort to a minimum
- All engines have regeneration
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Redaktionsschluß 12.08.2022