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2 USER GUIDE
2.2.4 DC Input Connection
Prior to installation:
• DC Supply cables should be as short as possible (no longer than the values in table 2.2.4.1)
• The size of the cable should be thick enough to maintain a voltage drop of less than 2%
when carrying the maximum input current. This will help prevent frequent low-input voltage
warnings and shutdown.
• The following sizes of cables and fuses are recommended for connection of the supply
batteries to inverter, see table 2.2.4.1 below for suitable cable sizing for your installation.
• Ensure lugs suitable to the selected cable size and to the inverter terminals are used, refer to
table 2.2.4.2 below for suitable lug size with reference to your chosen cable size.
Table 2.2.4.1 - Recommended Cable & Fuse Sizing
Cable Length
12V Models 24V Models
Cable Size mm² (AWG)
Inline Fuse Rating (A)
Midi
Cable Size mm² (AWG)
Inline Fuse Rating (A)
Midi
0 - 1m 13 (6) 50 6 (10) 30
1 - 2m 13 (6) 50 6 (10) 30
2 - 3m 21 (4) 50 8 (8) 30
3 - 4m 27 (3) 50 8 (8) 30
4 - 5m x x 13 (6) 30
5 - 6m x x 13 (6) 30
Fuse ratings are suitable to these recommended cable sizes.
2.3 Protection features
Model
DC Input (VDC)
Over Temperature
Protection
Over Voltage Under Voltage
Shut-down Restart
Shutdown Restart Alarm Shutdown Restart
R-12-350RS
15.5±0.25V 14.5±0.25V 10.5±0.25V 10.0±0.25V 12.0±0.25V
83±5°C 53±5°C
R-24-350RS
31.0±0.5V 29.0±0.5V 21.0±0.5V 20.0±0.5V 24.0±0.5V
Note: The specifications are subject to change without notice
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