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7
Electrical System
The electrical wiring between the electric motor and the motor con-
troller has already been installed. The installation has an insulated
return.
Connect the motor as follows:
MCVB Boosted charge
- 48 V
CAN-bus
Keeps battery cables free from the E-Line housing and sharp
7 .1
MCVB boosted charge function
Using the MCVB boosted charge function, the 48 Volt E-Line motor
can be used in an (existing) 24 V onboard network.
By connecting a 24 Volt battery bank to the MCVB boosted charge
connection, the 48 Volt, E-Line, battery bank is charged. An addition-
al charging facility is not required. See page
diagram.
- 48 V
The MCVB boosted charge function is only suitable for
lead-acid batteries as standard .
24
370301.01
+ 24 V
+ 48 V
CAN-bus
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edges
34
for the connection
MCVB
Boosted charge
+ 24 V
+ 48 V
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7 .2
Batteries
Vetus can provide maintenance-free batteries of the type AGM (Ab-
sorbed Glass Mat), that, with approx. 375 charge cycles to a depth of
discharge of 70%, are excellently suited to electric propulsion.
Starter batteries are not suitable for an electric propulsion system.
Instead, semi-traction or traction batteries should be used.
7 .3
Battery capacity
The following points play an important role in determining the bat-
tery capacity:
- Boat characteristics (length of waterline, weight, hull shape)
- Sailing style
- Desired range
- Battery type
Table 'Power consumption indication displacement vessel' on page
25
gives an indication of the power consumption (energy con-
sumption) of a displacement vessel at different lengths and speeds.
The power consumption can then be used to calculate the sailing
time. See example below:
1 . Determining battery capacity
For a boat with a length of 6 meters and a desired sailing speed of
8.8 km/h (4.7 knots) an indicative power input of 2.1 kW applies.
The desired sailing time is set at a minimum of 6 hours, continuous
sailing. This results in a required battery capacity of 2.1 x 6 = 12.6
kWh.
2 . Determine battery pack
A battery pack of eight AGM batteries, C20 value 220 Ah, 12 V
series parallel (4 x 12 V and 2 x 220 Ah) switched to a 48 V battery
pack gives a usable battery capacity of ((220 x 2) x (4x12) x 0.7) =
14.8 kWh.
7 .4
Battery installation
The following points must be taken into account when installing the
batteries:
Always follow the warning and safety instructions as stated
in the battery manual .
- Batteries must be installed in a dry, well-ventilated space.
- Ventilation is important because small quantities of explosive gas
can be produced while charging. If necessary, install a system of
forced ventilation.
- Always install batteries above the bilge water level.
- Batteries must be fixed securely to prevent damage to the casing.
Preferably fit batteries in a tray.
- Ambient temperature may not exceed 60 degrees C (140 de-
grees F). Never place batteries in direct sunlight!
- The batteries must be easily accessible for maintenance.
vetus® Installation instructions and operation manual E-Line electric propulsion
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