Helios COMBO SPH3600-BL SERIES User Manual page 31

HELIOS COMBO SPH3600/5000-BL
PV array meets the IEC61730 class A requirements.
If inverter isn't equipped with DC switch, install a DC switch between PV array and inverter. The
recommended switch is with 600Vdc/16A.
Switch off DC switch before connecting with PC array.
Ensure the positive and negative connection is correct when connecting PV array with inverter.
The DC input voltage should be less than the max. input voltage of inverter.
As the inverter is non-isolation grid-connected inverter, don't connect the positive and negative of PV
array with grounding wire to avoid that inverter can't work or inverter damage.
Use the equipped PV connector and terminals to perform DC input wiring to avoid poor connection or
acring.
The recommended wire is AWG12 or the cross-sectional area of wire is 4mm²
PV connector includes positive connector and negative connector. The corresponding matching is
positive metal terminal and negative metal terminal respectively, as shown in Figure4-8 and Figure4-
9.
Figure4-8 Positive connector and positive metal terminal
Figure4-9 Negative connector and negative metal terminal
Step 1 Dismantle the sealing nuts of positive connector and negative connector respectively.
Step 2 Strip the insulation layer of positive wire and negative wire for about 7mm by wire stripper, as shown
in Figure4-10 and Figure4-11.
Figure4-10 Positive wire
7mm
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4 Electrical Connection