19
en
5�2�3 Connecting the inverter to the PV generator
DANGER!
Fatal electric shock hazard!
In daylight the PV generator supplies the inverter with a danger-
ously high DC voltage.
●
The PV generator voltages are very high. NEVER plug or unplug
the DC connectors when the inverter is turned on, otherwise dan-
gerous electric arcs could develop.
10 min
DANGER!
Fatal electric shock hazard!
Components within the inverter are charged with a high
voltage.
●
Before attempting any action on the DC connections,
make sure that the DC switch is switched off
●
Wait 10 minutes to rule out any residual risks
●
Do not connect either PV generator pole to ground.
Make sure that positive and negative poles are free
floating to earth potential.
This inverter is equipped with two MPPT circuits having the following charac-
teristics:
Model
Max� DC Voltage
Max� DC Current
MPP1 / MPP2
3600SP
600V
26 A (2 x 13 A)
4000SP
600V
26 A (2 x 13 A)
4600SP
600V
26 A (2 x 13 A)
5000SP
600V
26 A (2 x 13 A)
CAUTION!
Never exceed the absolute maximum ratings indicated in the above
table under any environmental operating condition.
Connectors of PV string cabels
Ensure that cables of the proper type are being used to connect the inverter to
the PV generator. In particular, PVC and H07RN-F non-tinned cables are NOT
recommended.
The PV cables must be terminated with the Amphenol H4 provided with the
inverter.
If different types of connectors are used, or if different installation tools and
procedures are used, then it may not be possible to ensure safety and tech-
nical performance.
The 25/28/30 SHT units have integrated 15 A string fuses. The string fuses
prevent too high reverse current.
