Improved Cooling Concept - Bosch BPT-S 3 Manuel De Service

English Technical description | 25
Integrated DC switch disconnector
In addition, the string inverter is fitted with an
intelligent DC switch disconnector. Before
connecting, the string inverter checks the installation
on the DC and AC side. If an error occurs during
operation, the switch disconnector automatically
disconnects the solar generator from the string
inverter, thus providing additional operational safety.
In combination with the Bosch Service concept, this
ensures continuous and smooth operation of the
string inverter.
The inputs of the solar generator are fitted with
overvoltage protection (type 3).
The overvoltage protection does not provide
protection from prohibitively high open-circuit
voltages of the solar generator (for voltages, see
Specifications, p. 111).
3.2.6

Improved cooling concept

The new, maintenance-free cooling concept,
PowerCool, optimizes the heat distribution of the
string inverter. The innovative cooling concept and
the use of components that meet the stringent Bosch
quality requirements guarantee a worthwhile financial
return on your investment. The protection type and
the ambient temperature range of -25 °C to 60 °C
mean that the device can be installed in almost any
environment. Above an ambient temperature of
approx. 40 °C and increased output, the string
inverter may reduce its output (derating). This
prevents the power electronics from premature
ageing.
Bosch Power Tec GmbH Bosch BPT-S 3 / 3.68 / 4 / 4.6 | Operating manual