Connection Of Solar Modules - INVT iMars Operation Manual

iMars grid-tied solar inverters

4.4.1 Connection of solar modules

Figure 4.8 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 iMars 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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Installation