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4.1
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:
+ 48 V
- 48 V
MCVB Boosted charge
Keeps battery cables free from the E-POD housing and sharp
4.2
MCVB boosted charge function
Using the MCVB boosted charge function, the 48 Volt E-POD 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-POD, battery bank is charged. An addition-
al charging facility is not required. See page
diagram.
+ 48 V
MCVB
Boosted charge
+ 24 V
The MCVB boosted charge function is only suitable for
lead-acid batteries as standard.
MCVB battery cable
MCVB fuse
Power consumption indication displacement vessel
Waterline length
4 m (13 ft)
6 km/h (3.3 kn)
Gentle sailing
1 kW
7.2 km/h (3.8 kn)
Cruising speed
1.5 kW
9 km/h (4.9 kn)
Hull speed
3.1 kW
12
370801.11
CAN-bus
+ 24 V
W
arninG
edges
60
for the connection
- 48 V
W
arninG
≥25 mm
2
80 A
6 m (19 ft)
6 km/h (3.3 kn)
0.7 kW
8.8 km/h (4.7 kn)
2.1 kW
11 km/h (5.9 kn)
4.1 kW
4.3
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.
4.4
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' gives an
indication of the power consumption (energy consumption) of a
displacement vessel at different lengths and speeds. The power con-
sumption 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.
3. Sailing time calculation (indication)
Based on the energy consumption of 2.1 kW, this gives a sailing
time of (14.8 / 2.1) more than 7 hours.
8 m (26 ft)
10 m (33 ft)
6 km/h (3.3 kn)
6 km/h (3.3 kn)
0.8 kW
1 kW
10.2 km/h (5.5 kn)
11.4 km/h (6.1 kn)
3.9 kW
6.7 kW
12.8 km/h (6.9 kn)
14.3 km/h (7.7 kn)
7.7 kW
13.4 kW
vetus® Installation manual E-POD electric propulsion
12 m (39 ft)
6 km/h (3.3 kn)
1.1 kW
12.5 km/h (6.7 kn)
9.6 kW
15.7 km/h (8.4 kn)
18.9 kW
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