Installation instructions Powador 3200 / 4400 / 5300 / 5500 / 6600_EN
Page 9
4.3 Protection concepts
The following monitoring and protective functions are inte-
grated into Powador inverters:
– Overvoltage conductors/varistors to protect the power
semiconductors from high-energy transients on the grid side
– Temperature monitoring of the heat sink
– EMC fi lters to protect the inverter from high-frequency grid
interference
– Grid-side grounded varistors to protect the inverter against
burst and surge pulses
– Islanding detection according to VDE 0126-1-1
– AC/DC-sensitive residual current circuit breaker (
RCD
) type B
(
R
esidual
C
urrent protective
D
evice), which monitors the
leakage current from the Powador’s grid connection to the
PV generator and interrupts the feed to the grid when the
residual current exceeds 30 mA. The RCD type B triggers
when a cable has a fault in the insulation, a frame fault or
a ground fault.
– DC disconnect for positively disconnecting the photovoltaic
generator from the inverter
– DC fuses (10 A)
5 Installation and Start-Up
W A R N I N G
Risk of fatal injury from fi re or explosions. The
Powador’s housing may become hot during
operation.
–
Do not mount the Powador on fl ammable
materials.
–
Do not install the Powador in areas which contain
highly fl ammable materials.
–
Do not install the Powador in areas where there
is a risk of explosion.
C A U T I O N
Risk of burns from hot housing components.
Install the Powador so that unintentional contact
with it is not possible.
5.1 Selecting an appropriate place for
installation
NOTICE
Powador inverters meet the requirements of protection
rating IP54 if all cable feedthroughs are used or suitably
closed off.
In spite of measures taken to seal the units, the units should be
installed in areas that are as dry as possible in order to extend
their service life. Furthermore, in order to protect the units
from overheating, ensure that they are installed in a climate-
controlled area. This also extends their service life.
The following items are important when you select the place
of installation for the inverter:
– Ensure good access to the unit for installation or any service
work that may later be required.
– Maintain the following minimum clearances around the unit:
200 mm between inverters,
700 mm clearance to stacked inverters,
500 mm to cabinets, ceilings, etc.
– The unit is designed for vertical wall mounting.
– Air must be allowed to circulate freely around the housing
and through the heat sink on the rear side.
– If the inverter is built into a switching cabinet or similar,
provide forced ventilation to ensure that heat is suffi ciently
dissipated.
S e c t i o n 4 ·
U n i t D e s c r i p t i o n
S e c t i o n 5 ·
I n s t a l l a t i o n a n d S t a r t - U p
