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

SMA Solar Technology America LLC 4 Product Description
Grid Management Services
The inverter is a grid support utility interactive inverter. The inverter has been tested and certified to
be compliant with UL 1741 SA (2016/09/07). For connecting the inverter to the utility grid, no
additional grid monitoring equipment is necessary. A description of the tested functions and
instructions on the activation and setting of functions can be found in the technical information "Grid
support utility interactive inverters" at www.SMA-Solar.com.
PV Rapid Shutdown System Equipment
The inverter is a PV Rapid Shutdown System Equipment and performs the function of voltage
reduction according to UL 1741 CRD PV Rapid Shutdown Systems 2015. When a rapid shutdown
is triggered by disconnecting the utility grid, the inverter discharges independently on the AC side to
≤ 30 V within 30 seconds.
If a disconnection device is used in addition between the inverter and the PV array that disconnects
the PV array in the case of a rapid shutdown, the inverter discharges independently on the DC side
to ≤ 30 V within 30 seconds.
Attention - The system status indicator shall be installed in a location in close proximity to the
system actuator, where the indication of safe shutdown can be clearly seen.
SMA Sensor Module
The SMA Sensor Module has different interfaces for connecting various sensors (i.e. temperature
sensor, irradiation sensor, anemometer or energy meter). The SMA Sensor Module converts the
signals of the connected sensors and transmits them to the inverter. The SMA Sensor Module can
be retrofitted.

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, 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.
Arc-Fault Circuit Interrupter (AFCI)
®
In accordance with the National Electrical Code , the inverter has a system for arc fault detection
and interruption.
An electric arc with a power of 300 W or greater must be interrupted by the AFCI in the time
specified by UL 1699B. 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.
Installation Manual STP50-US-40-IA-en_es-11 17