SMA SC 400HE Installation - Manual (Page 41)

SMA Solar Technology AG Internal Electrical Connections
Installation Guide SCxxxHE-IEN104432 41
5.1.1 Connecting the Power Cable for the "Chemically Active"
Option
The power cables are included in the scope of delivery and must be connected to the power units in
the inverter cabinet and to the sinusoidal filter choke in the AC cabinet. Three cables are connected
per phase. The cable routing in the right and left system is different. The following figure shows the
position of the glands in the left system; the position of the glands in the right system are mirror-inverted.
Connecting the Power Cables in the Left System
1. Connect L3 at the lower power module in the inverter cabinet.
2. Insert L3 through the cable gland A.
3. Connect L3 at the sinusoidal filter in the AC cabinet according to the label,
4. Tighten the cable gland A.
5. Connect L1 at the middle power module in the inverter cabinet.
6. Insert L1 through the cable gland B.
7. Connect L1 at the sinusoidal filter in the AC cabinet according to the label.
8. Tighten the cable gland B.
9. Connect L2 at the upper power module in the inverter cabinet.
10. Insert L2 through the cable gland C.
11. Connect L2 at the sinusoidal filter in the AC cabinet according to the label.
12. Tighten the cable gland C.
A
B