12
370801.11
vetus®
Installation manual E-POD electric propulsion
ENGLISH
+ 48 V
MCVB Boosted charge
+ 24 V
- 48 V
CAN-bus
+ 48 V
- 48 V
MCVB
Boosted charge
+ 24 V
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:
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
for the connection
diagram.
W
arninG
The MCVB boosted charge function is only suitable for
lead-acid batteries as standard.
MCVB battery cable
≥25 mm
2
MCVB fuse
80 A
W
arninG
Keeps battery cables free from the E-POD housing and sharp
edges
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.
Power consumption indication displacement vessel
Waterline length
4 m (13 ft)
6 m (19 ft)
8 m (26 ft)
10 m (33 ft)
12 m (39 ft)
Gentle sailing
6 km/h (3.3 kn)
6 km/h (3.3 kn)
6 km/h (3.3 kn)
6 km/h (3.3 kn)
6 km/h (3.3 kn)
1 kW
0.7 kW
0.8 kW
1 kW
1.1 kW
Cruising speed
7.2 km/h (3.8 kn)
8.8 km/h (4.7 kn)
10.2 km/h (5.5 kn)
11.4 km/h (6.1 kn)
12.5 km/h (6.7 kn)
1.5 kW
2.1 kW
3.9 kW
6.7 kW
9.6 kW
Hull speed
9 km/h (4.9 kn)
11 km/h (5.9 kn)
12.8 km/h (6.9 kn)
14.3 km/h (7.7 kn)
15.7 km/h (8.4 kn)
3.1 kW
4.1 kW
7.7 kW
13.4 kW
18.9 kW
