SMA SUNNY ISLAND SIC40-MPT, Technical Description

Page: 10 / 52

Safety Precautions SMA Solar Technology AG
10 SIC40-TEN081110 Technical Description
The maximum open circuit voltage of the PV generator may not be greater than the maximum input
voltage of the charge controller (140 V), even at very low ambient temperatures. During operation,
the PV generator voltage must always be at least 5 V higher than the battery voltage. The charge
controller is suitable for battery currents up to maximum 40 A at 48 V and 50 A at 24 V/12 V
nominal battery voltage.
The suitability of a PV generator for the charge controller primarily depends on the output voltage
and output power of the PV generator. In this regard, observe the limits specified by the module
manufacturer.
Appropriate usage also includes observing all the documentation.
2.2 General Safety Instructions
DANGER!
Danger to life due to high voltages in the charge controller.
• All work on the charge controller must only be carried out by a qualified electrician.
CAUTION!
Danger of burn injuries due to hot housing parts.
• Do not touch the housing of the charge controller during operation.
PV generator ground connection
Observe all local requirements for grounding the PV generator. SMA recommends
connecting the generator frame and other electricity conducting surfaces such that there
is continuous conduction and to connect them to the ground in order to reach maximum
protection for property and persons.