4 Product Description
SMA Solar Technology America LLC
RS485 Interface
The inverter can communicate via cables with special SMA communication products via the RS485
interface (information on supported SMA products at www.SMA-Solar.com). The RS485 interface
can be retrofitted and can be used in place of the SMA Speedwire/Webconnect interface in the
inverter.
Class 1 wiring methods are to be used for field wiring connection to the terminals of the
communication interface.
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.
SMA OptiTrac Global Peak
SMA OptiTrac Global Peak is an advancement of SMA OptiTrac and allows the operating point of
the inverter to follow the optimal operating point of the PV array (MPP) precisely at all times. In
addition, with the aid of SMA OptiTrac Global Peak, the inverter detects several maximum power
points in the available operating range, such as may occur particularly with partially shaded
strings. You can activate SMA OptiTrac Global Peak via the operating parameters (see Section 8.5
"Setting SMA OptiTrac Global Peak", page 40).
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.
Q on Demand 24/7
The inverter can supply reactive power by means of Q on Demand 24/7 covering the entire unit
circle around the clock (for details on the configuration refer to the Technical Information
"Integrated Plant Control and Q on Demand 24/7" at www.SMA-Solar.com).
Integrated Plant Control
The inverter can display the Q(V) characteristic curve specified by the grid operator by means of
Integrated Plant Control without measuring on the grid-connection point. The inverter can
automatically compensate equipment installed between the inverter and the grid-connection point
after having activated the function (for information on the system configuration refer to the Technical
Information "Integrated Plant Control and Q on Demand 24/7" at www.SMA-Solar.com).
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Installation Manual