Operating Manual SB3-5TL-21-BE-en-10 17
SMA Solar Technology AG 4 Product Description
SMA Power Control Module
The SMA Power Control Module enables the inverter to implement grid management and is equipped
with an additional multi-function relay (for information on installation and configuration, see the
SMA Power Control Module installation manual). The SMA Power Control Module can be retrofitted.
Fan retrofit kit
The fan retrofit kit is used for additional inverter cooling at high ambient temperatures and also has a
multi-function relay (for information on installation and configuration, see the fan retrofit kit installation
manual). The fan retrofit kit can be retrofitted, and it cannot be operated in parallel with the
SMA Power Control Module.
SMA OptiTrac Global Peak
SMA OptiTrac Global Peak is a further development of the SMA OptiTrac and allows the operating
point of the inverter to follow the MPP precisely at all times. SMA OptiTrac Global Peak also means
that the inverter can detect the presence of multiple maximum power points in the available operating
range, such as can occur in partially shaded PV strings in particular.
Grid management services
The inverter is equipped with grid management functions.
Depending on the requirements of the grid operator, you can activate and configure the functions
(e.g. active power limitation) via operating parameters.
All-pole sensitive residual-current monitoring unit
The all-pole sensitive residual-current monitoring unit detects alternating and direct differential
currents. The integrated differential current sensor detects the current difference between the neutral
conductor and the number of line conductors for single-phase and three-phase inverters. If the current
difference increases suddenly, the inverter disconnects from the utility grid.