SMA SUNNY BOY 1600TL, Installation Manual

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SMA Solar Technology AG Safety
Installation Guide SB16_21TL-IA-IEN112351 9
2 Safety
2.1 Appropriate Usage
The Sunny Boy is a PV inverter which converts the DC current of the PV array to AC current and feeds
it into the power distribution grid.
Principle of a PV plant with this Sunny Boy
The Sunny Boy may only be operated with PV arrays (modules and cabling) of protection class II. Do
not connect any sources of energy other than PV modules to the Sunny Boy.
When designing the PV plant, ensure that the values comply with the permitted operating range of all
components at all times. The free design program "Sunny Design" (www.SMA.de/en/SunnyDesign)
will assist you. The manufacturer of the PV modules must have approved the modules for use with this
Sunny Boy device. You must also ensure that all measures recommended by the module manufacturer
for long-term maintenance of the module properties are taken (see also Technical Description
"Module Technology" in the download area of www.SMA.de/en).
Do not use the Sunny Boy for purposes other than those described here. Alternative uses,
modifications to the Sunny Boy or the installation of components not expressly recommended or sold
by SMA Solar Technology AG shall void any warranty claims and the operation permission.
Capacitive discharge currents
PV modules with large capacities relative to ground, such as thin-film modules with cells on
a metallic substrate, may only be used if their coupling capacity does not exceed 1400 nF.
During feed-in operation, a discharge current flows from the cells to ground. The amount
of current depends on the manner in which the modules are installed (e.g., foil on metal
roof) and on the weather (rain, snow). This "normal" discharge current may not exceed
50 mA due to the fact that the inverter would otherwise automatically disconnect from the
grid as a protective measure.