Multifunction Relay - SMA SUNNY TRIPOWER CORE1-US Instrucciones De Instalación

4 Product Overview SMA Solar Technology AG
The Rapid Shutdown function is deactivated by default. The Rapid Shutdown function should only
be activated when PVRSE switching devices have been installed within the PV array or between the
PV array and the inverter. The Rapid Shutdown function can be activated during or after inverter
commissioning via the user interface by selecting the operating mode suitable to the PV array
PVRSE switching devices. If the Rapid Shutdown function is activated and PV array PVRSE switching
devices are not installed, the inverter cannot discharge the connected DC input conductors during
Rapid Shutdown and the inverter can be damaged.
WARNING - THIS PV RAPID SHUTDOWN EQUIPMENT DOES NOT PERFORM ALL OF THE
FUNCTIONS OF A COMPLETE PV RAPID SHUTDOWN SYSTEM. THIS PV RAPID SHUTDOWN
EQUIPMENT MUST BE INSTALLED WITH OTHER EQUIPMENT TO FORM A COMPLETE PV
RAPID SHUTDOWN SYSTEM THAT MEETS THE REQUIREMENTS OF NEC (NFPA 70) FOR
CONTROLLED CONDUCTORS OUTSIDE THE ARRAY. OTHER EQUIPMENT INSTALLED IN OR
ON THIS PV SYSTEM MAY ADVERSLY AFFECT THE OPERATION OF THE PV RAPID SHUTDOWN
SYSTEM. IT IS THE RESPONSIBILITY OF THE INSTALLER TO ENSURE THAT THE COMPLETED PV
SYSTEM MEETS THE RAPID SHUT DOWN FUNCTIONAL REQUIREMENTS. THIS EQUIPMENT
MUST BE INSTALLED ACCORDING TO THE MANUFACTURER'S INSTALLATION MANUAL.

Multifunction Relay

The inverter is equipped with a multifunction relay as standard. The multifunction relay is an
interface that can be configured for the operating mode used by a particular system.
String-Failure Detection
The string-failure detection measures the total current of every input and continuously calculates the
mean values for the inputs in question. The total currents are compared with the mean values. If a
total current exceeds or falls short of the mean value by the set tolerance value, an event is
reported. Marginally increased total currents are reliably detected over several query intervals and
distinguished from typical current fluctuations of the PV array. String-failure detection is deactivated
by default and must be activated. In addition, the tolerance value can be set via the user interface
and the mean values read off.
Surge arrester type 2 and type 1+2
On the AC and DC side, the inverter is equipped with slots for type 2 or type 1+2 surge protection
devices. The surge protection devices limit dangerous overvoltages. The surge protection devices
can be retrofitted.
Arc-Fault Circuit Interrupter (AFCI)
®
In accordance with the National Electrical Code , the inverter has a system for DC arc fault
detection and interruption. The arc-fault circuit interrupter is listed in accordance with UL 1699B Ed.
1. A detected electric arc causes the inverter to interrupt feed-in operation: In order to restart feed-in
operation, the feed-in operation must be activated manually. If the installation conditions allow it,
you can deactivate the arc-fault circuit interrupter.
SMA Smart Connected
SMA Smart Connected is the free monitoring of the inverter via the SMA Sunny Portal. Thanks to
SMA Smart Connected, the PV system operator and qualified person will be informed automatically
and proactively about inverter events that occur.
18 STP33-62-US-41-IA-xx-12 Installation Manual