Decommissioning The Rapid Shutdown System - SMA RSB-2S-US-10 Manuel D'installation

SMA Solar Technology America LLC

10 Decommissioning the Rapid Shutdown System

Procedure:
1.
Danger to life due to high voltages of the PV array
When exposed to sunlight, the PV array generates dangerous DC voltage which is present
in the DC conductors. Touching the DC conductors can lead to lethal electric shocks.
• Switch off the DC load-break switch on the inverter.
• Disconnect the DC connectors on the input strings.
• Only touch the DC conductors on their insulation.
2. Unscrew the four screws of the Rapid Shutdown Box
enclosure lid using a hex socket screwdriver (TX 25)
and remove the enclosure lid.
3. Remove the conductors of the Rapid Shutdown Controllers and, if present, those of an
additional Rapid Shutdown Box, from the Rapid Shutdown Box. To do so, pull the respective
five-pole plugs with the connected conductors out of the terminal block RSC and remove from
the Rapid Shutdown Box.
4. Remove the output string conductors from the terminal blocks A and B. To do so, push the
locking levers upwards to the stop and pull the conductors out of the terminals.
5. Remove each output string equipment grounding conductor from the equipment ground bar.
To do this, unscrew the cylinder-head screw using a hex socket screwdriver (TX 25) and
remove the cylinder-head screw, spring lock washer, the clamping bracket and the washer.
6. Remove the output string conductors and each equipment grounding conductor from the Rapid
Shutdown Box.
7. Remove the conduits and conduit fittings from the enclosure openings of the Rapid Shutdown
Box.
Installation Manual
10 Decommissioning the Rapid Shutdown System
DANGER
RSS-US-IA-xx-14 37