SMA SB 1.5-1VL-40 - Manual (Page 14)

Limited function in the event of frost
The integrated WLAN interface is only designed for temperatures down to -20°C.
• Deactivate the WLAN interface at low temperatures (see Section 9.17 "Switching WLAN
Off", page 48).
Grid Management Services
The inverter 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.
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. SMA OptiTrac Global Peak is enabled by default.
All-pole sensitive residual-current monitoring unit
The all-pole sensitive residual-current monitoring unit detects alternating and direct differential
currents. In single-phase and three-phase inverters, the integrated differential current sensor detects
the current difference between the neutral conductor and the line conductor(s). If the current
difference increases suddenly, the inverter disconnects from the utility grid.
Connection of the SMA Energy Meter
If an SMA Energy Meter is installed in the PV system, the inverter can receive data on the
household energy consumption directly from this.
4 Product Description SMA Solar Technology AG
Operating Manual SB15-25-BE-en-10 14