SMA STP 10000TL-10 Installation - Manual (Page 9)

SMA Solar Technology AG 2 Safety
Installation Manual STP10-17TL-IA-en-32 9
2 Safety
2.1 Appropriate Usage
The Sunny Tripower is a PV inverter which converts the direct current of a PV array into alternating
current and feeds this into the electricity grid.
Principle of a PV system with the Sunny Tripower
The Sunny Tripower must only be operated with PV arrays of protection class II, in accordance with
IEC 61730, application class A. Do not connect any energy sources other than PV modules to the
Sunny Tripower.
When designing the PV system, ensure that the permitted operating range of all components is
complied with at all times. The free design programme "Sunny Design", version 2.0 or higher
(see www.SMA-Solar.com/SunnyDesign), will assist you in this. The manufacturer of the PV modules
must have approved the PV modules for use with the Sunny Tripower. You must also ensure that all
measures recommended by the module manufacturer for the long-term maintenance of the module
properties are taken (see also technical information "Module Technology" at www.SMA-Solar.com).
Do not use the Sunny Tripower for purposes other than those described here. Alternative uses,
modifications to the Sunny Tripower or the installation of components not expressly recommended or
sold by SMA Solar Technology AG void the warranty claims and operation permission.
String connections Sunny Tripower 10000TL and 12000TL
The Sunny Tripower 10000TL and 12000TL only have four string connections at input A.
Capacitive leakage currents
PV modules with large capacities relative to earth, such as thin-film PV modules with cells on a
metal substrate, may only be used if their coupling capacity does not exceed 2.55 μF.
During feed-in operation, a leakage current flows from the cells to earth, the size of which
depends on the manner in which the PV modules are installed (e.g. foil on metal roof) and on
the weather (rain, snow). This "normal" leakage current must not exceed 90 mA, as otherwise
the inverter would automatically disconnect from the electricity grid as a protective measure.
For further information on this subject, see the technical information "Capacitive Leakage
Currents" at www.SMA-Solar.com.