Grid Management Services; Fast Stop Function; Sma Arcfix; Sma Dynamic Power Control - SMA Sunny Tripower X 12 Operating Manual

4 Product Overview
4.5.8

Grid Management Services

The product is equipped with service functions for grid management.
Depending on the requirements of the grid operator, you can activate and configure the functions
(e.g. active power limitation) via operating parameters.
4.5.9

Fast stop function

The fast stop function is a digital input on the inverter via which the inverter can be disconnected
from the utility grid. It can be triggered by means of an external potential-free contact (break
contact or make contact). It can be configured whether the disconnection from the utility grid should
take place when the contact is open or closed.
The fast stop function is deactivated by default and must be activated in the inverter.

4.5.10 SMA ArcFix

SMA ArcFix is an Arc Fault Circuit Interrupter (AFCI). With this function, the inverter effectively
detects arcs on the DC side and interrupts them.
A detected electric arc causes the inverter to interrupt feed-in operation. To restart feed-in operation,
the operational disruption which has occurred, must be reset through a manual restart.
Alternatively, the arc-fault circuit interrupter can be activated without inhibiting operation.
Depending on the country data set, arc fault detection is activated or deactivated by default. If the
installation conditions permit this, you can change the default setting.
Arc-fault circuit interrupter without permanent operation interruption
If the arc-fault circuit interrupter (AFCI) is configured with automatic restart, the system should
be monitored closely and recurring faults in the AFCI should be investigated immediately by
qualified persons. If it is not possible to identify the cause of the error, the inverter should be
taken out of operation until the investigation and corrective action can be completed.
Recurring errors may cause damage to neighboring conductors and system components,
which could result in more extensive system failures and damage and even to uncontrolled
electric arcs and fires.
SMA ArcFix complies with the requirements of the IEC 63027 and corresponds to the following
installation classes:
• F-I-AFPE-1-6-1
• F-I-AFPE-2-3-1
Also see:
• Manual restart after electric arc ⇒ page 98

4.5.11 SMA Dynamic Power Control

SMA Dynamic Power Control is a pre-installed software that allows a System Manager to control
the active and reactive power of up to 5 inverters.
26 STPxx-50-BE-en-11
SMA Solar Technology AG
Operating manual