SMA RAPID SHUTDOWN SYSTEM Instrucciones De Instalación página 32

6 Electrical Connection
10. Connect the conductors of the second output
strings to the terminal block B. To do so, push the
locking levers upwards to the stop and insert the
conductors into the terminals. When doing so,
ensure that the positive terminal and negative
terminal have the correct polarity at the inverter.
11.
Danger of pinching fingers when the terminal block locking levers snap shut
The locking levers close by snapping down fast and hard.
• Press the locking levers of the terminal block B down with your thumb only. When doing
so, ensure that your fingers can not be pinched when the locking levers snap into place.
12. Ensure that all terminals are allocated to the correct conductors.
13. Hang the enclosure lid in the bracket of the
upper enclosure edge and tighten the four
screws using a hex socket screwdriver (TX 25)
(torque: 6 Nm ± 0.6 Nm (53 in-lb ± 5 in-lb)).
Connecting the input strings
Requirements:
☐ The two PV strings of each separate input are connected in parallel inside the Rapid
Shutdown Box. For the parallel connection of the input strings, a correct dimensioning of the
strings must be used.
☐ The maximum permitted system voltages of the Rapid Shutdown System may not be
exceeded (see Section 11 "Technical Data", page 40).
☐ Each positive DC conductor of a string must be equipped with a positive MC4 connector
(refer to the connector manual for information on equipping).
☐ Each negative DC conductor of a string must be equipped with a negative MC4 connector
(refer to the connector manual for information on equipping).
32 RSS-US-IA-xx-13
SMA Solar Technology America LLC
Installation Manual