SMA SUNNY ISLAND 8.0H - Switching the Off-Grid Inverters Off; Tripping the Emergency Disconnection of the Off-Grid System

SMA Solar Technology AG 6 Electrical Connection
Installation Manual SI80H-60H-OffGrid-IA-en-11 39
9. Strip the insulation from the DC– cable and mount a terminal lug.
10. Lead the DC– cable through the cable gland for DC– into the off-grid inverter.
11. Install the DC– cable in the cable channel for DC–
cables. Look for the – designation in the cable
channel.
12. Fasten the DC– cable to the DC– terminal using an M8x20 screw and an Allen key (AF 6)
(torque: 4 Nm ... 5.7 Nm).
13. Tighten the swivel nuts of the cable glands.
6.7 Installing Protective Devices for DC Sources
If you install DC sources, you must install the following protective devices:
• If the applicable local standards and directives require a fuse-switch-disconnector, install a
fuse-switch-disconnector in the DC sub-distribution.
• If a fuse-switch-disconnector is installed, dimension fuse links based on the maximum output
current of the DC sources.
• Protect every DC source with a separate miniature circuit-breaker.
8.
Damage to the off-grid inverter due to reverse polarity
• Install the DC+ cable in the cable channel
for DC+ cables. Look for the + designation in
the cable channel.
• Fasten the DC+ cable to the DC+ terminal using an M8x20 screw and an Allen key
(AF 6) (torque: 4 Nm ... 5.7 Nm).