44 | SAMLEX AMERICA INC.
SECTION 8 |
Installation
b) Voltage drop across the length of cables limited to 2% of 12V / 24V.
i) Voltage drop has been calculated by multiplying the Rated Continuous DC
Input Current (Column 2) and the resistance of the total length of Copper con-
ductor (the total length of conductor has been taken as 2 times the running
distance between the unit and the battery to cover 2 lengths of Positive and
Negative cable conductors).
ii) Resistance of the cable is based on Table 8.1.
5) Samlex America, Inc. makes 5 Models of generic / universal Inverter Installation Kits based
on 10 ft distance between the battery and the inverter and up to 3%-5% voltage drop.
These kits are designed to meet installation requirements of a wide power range from
600W to 3500W for 12V inverters and from 1200W to 7000W for 24V inverters. Please note
that cable sizing recommended in Columns 5 to 7 is based on 2% voltage drop for im-
proved efficiency for distances of 3 ft, 6 ft and 10 ft. Hence, the cable sizing for the Installa-
tion Kits shown in Column 8 may not exactly match the sizing given in Columns 5 to 7.
Fuse in the battery circuit is primarily required for protection against short circuit in
the battery cable run. The size of this fuse has to be equal to or larger than the rated
continuous DC input current of the inverter at Column (2). Further, the Amp rating of
the fuse used for protecting a battery cable against short circuit has to be lower than
the Ampacity of the cable so that the fuse blows before the cable insulation is dam-
aged due to overheating as a result of fault current higher than the Ampacity of the
cable. The Amp ratings of fuses provided with the Inverter Installation Kits are lower
than the Ampacity of cables provided with the Kit.
The Kits come with 10ft length of cables to cover battery to inverter distance of up to
10 ft. If the actual cable routing distance from the battery to the inverter is less than
10ft, please cut-off the extra length of cables. This will result in reduction in the over-
all resistance of the cable / reduction in voltage drop and consequently, will improve
the efficiency of the inverter system
8.4.6 DC Input Connection
The DC input terminals for battery connection (8 & 9 in Fig. 6.1) have cylindrical hole with
set screw:
- Hole size: 7/16"
- Set screw:
• 5/16" x 24 TPI
• 1/2" long
• Slotted head
!
CAUTION!
DO NOT insert the stranded bare end of the wire directly into the tubular hole as
the set screw will not pinch all the strands, resulting in a partial / loose contact.
!
ATTENTION!
NE PAS insérer l’extrémité nue du fil directement dans le trou tubulaire, car la vis de
réglage ne pincera pas tous les brins, ce qui provoquerait un contact partiel / lâche.