SMA SB 3000TL-US - Manual (Page 20)

3 Product Description SMA America, LLC
20 SB3-5TLUS22-BA-en-14 User Manual
3.5 Secure Power Supply (SPS)
The inverter is equipped with a secure power supply by means of which an external socket-outlet can
be connected to the inverter. The socket-outlet provides current from the PV plant on demand in the
event of a grid failure (see Section 5 "Secure Power Operation", page 22). The secure power supply
also has a terminal for the fan retrofit kit, enabling an external fan to be controlled.
3.6 Fan Retrofit Kit
The fan retrofit kit is used for additional inverter cooling at high ambient temperatures (for information
on installation and configuration, see the fan retrofit kit installation manual). The fan retrofit kit can be
retrofitted, installed at the factory if specified in the order or included in the scope of delivery.
The Sunny Boy 6000TL-US, 7000TL-US and 7700TL-US are equipped with a fan as standard.
3.7 Arc-Fault Circuit Interrupter (AFCI)
In accordance with the National Electrical Code
®
, Article 690.11, the inverter has a system for the
recognition of electric arc detection and interruption. An electric arc with a power of 300 W or
greater must be interrupted by the AFCI within the time specified by UL 1699B. A tripped AFCI can
only be reset manually. You can deactivate the automatic arc fault detection and interruption (AFCI)
via a communication product in "Installer" mode if you do not require this function. The 2011 edition
of the National Electrical Code
®
, Section 690.11 stipulates that newly installed PV systems attached
to a building must be fitted with a means of detecting and disconnecting serial electric arcs (AFCI) on
the PV side.