Bosch BPT-S 3 Manuel De Service page 175

English
NOTICE
Bosch Power Tec GmbH
Material damage due to incorrect DC connection (1)
An incorrect DC connection can cause damage to the
string inverter.
Only allow an authorised electrician to carry out DC

connections
BPT-S 4/4.6 only Do not connect to two of the same

poles (e.g. two positive poles)
 Do not connect modules to the incorrect inputs of
negative or positive poles
Do not install an earth connection in the generator:

Do not earth the positive (+) or negative (-) string
cable and only use insulated cables. It is possible to
earth the PV installation system and this is required
in some countries. Observe the applicable national
standards and directives.
Only connect permitted modules: Modules based

on crystalline silicon technology and modules based
on CIS technology
Only connect solar modules as DC sources: do not

connect fuel cells or batteries
Only use PV cables with sufficient current-carrying

capacity.
Only use double-insulated PV cables with sufficient

voltage resistance
Bosch BPT-S 3 / 3.68 / 4 / 4.6 | Operating manual
Installation | 57