SMA Solar Technology AG Electrical Connection
Technical Description SI5048-TB-TEN110340 35
Install the DC Terminals in the Following Sequence:
1. Loosen the cable gland on the Sunny Island.
2. Thread the DC cable through the cable gland.
3. Remove the protective insulation from the conductor and fit a suitable ring terminal lug to the
exposed end of the conductor.
4. Install the M32 cable gland (included in delivery) for "DC —" and "DC +" in the cable feed-
throughs.
– Insert the cable gland with the thread in the cable opening.
– Screw the counter nut onto the cable gland thread on the inside of the enclosure and tighten.
5. Insert the "DC–" conductor with the ring terminal lug into the "DC − " terminal and tighten the
screw firmly with a torque of 4 Nm to 5.7 Nm.
6. Insert the "DC+" conductor with the ring terminal lug into the "DC+" terminal and tighten the
screw firmly with a torque of 4.0 Nm to 5.7 Nm.
DC connection area
The positions between the ring terminal lug and connection area must be clean. This way
a transition resistance and the heating of the terminals is reduced.
DC cables
Do not connect any other components to the DC cables. Other components must be
connected directly to the battery via a separate distribution board.
To Next Page
Loading...
