SMA POWER BALANCER - Manual (Page 23)

SMA America, LLC Wiring
Installation Guide SBUS-PowBal-IUS102810 23
Linking the 3 inverters at the middle inverter
11. Open the middle inverter as described in the Sunny Boy installation guide.
12. Remove 2 filler plugs on the bottom right of the middle inverter.
13. Insert cable glands into each opening and fasten
each with a lock nut.
14. Unscrew the cap nut of the installed cable glands a bit.
15. Thread the Power Balancer cables from the 2 outside inverters through the cable glands into the
middle inverter.
Only use 1 cable gland per cable.
16. Draw each cable up to the three-pole terminal block (A).
17. Tighten the cap nut of each cable gland in order to secure the Power Balancer cable.
18. Insert the conductors of both Power Balancer
cables into 1 spring clamp male connector.
– Both red conductors into the middle terminal.
– Both blue conductors into the right terminal.
– The left terminal remains unused.
19. Close all clamp terminals by pushing down the
levers.