Victron energy Phoenix Inverter VE.Direct 48/500 Manuel page 5

3.2 Connection to the battery
In order to utilize the full capacity of the product, batteries with sufficient capacity and battery
cables with sufficient cross section should be used. See table:
Minimum battery cap.
Internal DC fuse
Fuse type (Mfr.:
Littelfuse)
Fuse replaceble
Recommended DC cable cross-section (mm
0 – 1,5 m
1,5 – 3 m
Minimum battery cap.
Internal DC fuse
Fuse type (Mfr.:
Littelfuse)
Fuse replaceble
Recommended DC cable cross-section (mm
0 – 1,5 m
1,5 -3 m
Minimum battery cap.
Internal DC fuse
Fuse type (Mfr.:
Littelfuse)
Fuse replaceble
0 – 1,5 m
1,5 -3 m
The inverters are fitted with an internal DC fuse (see table above for rating). If the DC cable length
is increased to more than 1,5m, an additional fuse or DC circuit breaker must be inserted close to
the battery. Important note: for UL certified (NEMA GFCI) inverters it is mandatory to install a
fuse or DC circuit breaker close to the battery, even if the cable length is less than 1,5m.
Reverse polarity connection of the battery wires will blow the internal fuse and can damage the
inverter. The internal fuse is not always replaceble (see table above).
3.3 Wire size for connecting the inverter chassis to ground
The earth conductor from the earth lug on the chassis to ground should have at least half the
cross-section of the conductors used for the battery connection: see Appendix B.
3.4 Connection to the load
Never connect the output of the inverter to another AC source, such as a household AC wall outlet
or a generator.
The inverter does not have a fuse in the AC output. The AC cabling is protected by a fast-acting
current limiter in case of a short circuit and an overload detection mechanism which mimics the
characteristics of a fuse (i.e. faster shutdown with larger overload). It is important to size your
wiring properly based on the inverters' power rating.
3.5 Connecting the inverter neutral output to the chassis/ground
The AC output is isolated from the DC input and the chassis. Local regulations may require a true
neutral. In this case one of the AC output wires must be connected to the chassis, and the chassis
must be connected to a reliable ground: see appendix A.
4
12/250 24/250
30 Ah 20 Ah
2 x 30 A 30 A
ATOF ATOF
32 V 32 V
no no
2
)
4 mm² 2,5 mm²
6 mm² 4 mm²
12/500 24/500
60 Ah 40 Ah
3 x 35 A 2 x 25 A
ATOF ATOF
32 V 32 V
no no
2
)
6 mm² 6 mm²
10 mm² 10 mm²
12/1200 24/1200
150 Ah 60 Ah
200 A 100 A
MIDI MIDI
32 V 32 V
yes yes
25 mm² 10 mm²
35 mm² 16 mm²
48/250 12/375
10 Ah 40 Ah
25 A 2 x 40 A
FKS ATOF
80 V 32 V
no no
1,5 mm² 6 mm²
2,5 mm² 10 mm²
48/500 12/800
20 Ah 100 Ah
30 A 125 A
FKS MIDI
80 V 32 V
no yes
4 mm² 16 mm²
6 mm² 25 mm²
48/1200
30 Ah
50 A
MIDI
58 V
yes
6 mm²
10 mm²
24/375 48/375
30 Ah 15 Ah
40 A 25 A
ATOF FKS
32 V 80 V
no no
4 mm² 2,5 mm²
6 mm² 4 mm²
24/800 48/800
50 Ah 30 Ah
2 x 40 A 2 x 20 A
ATOF FKS
32 V 80 V
no no
6 mm² 4 mm²
10 mm² 6 mm²