7 Electrical Connection
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FIG. 7-12 DC Input Connectors
7.71 Requirement for DC input
This single-phase inverter is equipped with one / two MPP trackers.
Requirements for PV module strings:
1) Same type.
2) The power, voltage (startup and open-circuit voltage) and operating current of each PV
strings must meet the allowable value of the inverter.
Note: Consider temperature coefficient of the PV modules.
Check the inverter specification in section ANNEX B.
7.72 Wiring
There are two types of DC connectors—MC4/H4, check the connector’s type for
completeness before assembling.
Negative Coupler & Contactor Pin Positive Coupler & Contactor Pin.
FIG. 7-13 Structure Illustration of DC Connector
Procedure:
1) Strip the insulation of cable to about 7.5mm with the wire stripper tool. Note do not
damage the conductors when do the stripping, as per FIG. 7-14.
2) Place the contact around the conductors of the stripped cable, then crimp the contact
with wire crimping pliers, as per FIG. 7-15.
Ensure the conductors completely wrapped without loosening or damage.
