V-TAC VT-6603105 Manuel D'instructions page 16

WIRING INSTALLATION
Figure 14 Connection between DC connector and solar modules
Connection steps:
(1) Lighting, short-circuit and other protection measures which meet the local electrical
safety laws and regulations are needed before the AC connection.
 PV strings can be connected to inverter only after protection measures
which conform to local electrical regulations are taken and the technical
parameters in this manual are fulfilled.
(2) Connect the output cables of solar modules to the DC connector of inverter as Figure
4.8 shows. Loose the nut of connector and remove the isolation layer of the DC cable for
about 8-10mm. Insert the conductor part into the appropriate position of the connector,
crimp the MC4 DC terminal of the inverter and tighten the nut with a torque of 2.5-3Nm.
The wiring of negative pole is the same as that of the positive pole. Ensure the poles of
solar modules are well connected with the connectors;
 The PV string connected to the series inverter must adopt the DC connector
configured especially for the inverter, do not use other connection devices
without authorization from our company, otherwise damage to the device,
unstable operation or fire may occur and our company will not undertake
quality assurance or assume any direct or joint liability thereof.
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