Connecting Rapid Shutdown Boxes Together - SMA RSB-2S-US-10 Manuel D'installation

SMA Solar Technology America LLC
11.
Damage to the Rapid Shutdown Controller due to moisture penetration
Moisture ingress can damage the Rapid Shutdown Controller and impair its functionality.
• Place the upper enclosure part onto the
lower enclosure part and tighten the four
screws using a cross-head screwdriver (PZ 2)
(torque: 1.8 Nm (16 in-lb).
• Ensure that the screws with a torque of 1.8 Nm (16 in-lb) are tightened.
6.5

Connecting Rapid Shutdown Boxes Together

If several Rapid Shutdown Boxes are present in your Rapid Shutdown System, the Rapid Shutdown
Boxes must be connected together as described in the following. You can connect a maximum of
16 Rapid Shutdown Boxes together.
Additionally required material (not included in the scope of delivery):
☐ Conduit (trade size: 16 mm (0.5 in) or smaller with suitable reducer bush)
☐ Raintight or liquidtight conduit fitting (trade size: 16 mm (0.5 in) or smaller with suitable
reducer bush)
☐ When laying a tray cable for exposed run (TC-ER): cable gland suitable for the cable and the
enclosure opening.
Requirements for the conductors:
☐ When laying in outdoor areas without conduit, a tray cable for exposed run (TC-ER) must be
used.
☐ Conductor type: copper wire
☐ Number of conductors: 5
☐ The conductors must be made of solid wire, stranded wire or fine stranded wire. When using
fine stranded wire, bootlace ferrules must be used.
☐ Conductor cross section: 0.75 mm² to 1.5 mm² (18 AWG to 16 AWG)
☐ Maximum length of the conductors between two Rapid Shutdown Boxes: 50 m (164 ft)
☐ Maximum length of the conductors from the first Rapid Shutdown Box to the last Rapid
Shutdown Box: 100 m (328 ft)
Installation Manual
NOTICE
6 Electrical Connection
RSS-US-IA-xx-14 27