7 Electrical Connection
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7.6.2 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. 7-10 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. 7-11.
2) Place the contact around the conductors of the stripped cable, then crimp the contact with wire crimping pliers, as
per FIG. 7-12.
Ensure the conductors completely wrapped without loosening or damage.
FIG. 7-11 Strip the Cable Insulating Layer FIG. 7-12 Crimp the Contact
3) Insert the crimped contact pin into the connector back until one click audibly. Pull lightly on the cable to ensure the
contact pins of the connectors are engaged. Pay attention to the polarities when assembling.
4) Tighten the nut with a special wrench. Torque: 2.5~2.9 N.m.
FIG. 7-13 Insert the Contact FIG. 7-14 Tighten the Cable Gland
5) Insert the assembled connectors into the bottom terminal of the inverter until one sound click audibly.
The locked DC connectors can only be disconnected with special tool.
FIG. 7-15 Illustration of DC Ports
