Three-phase photovoltaic grid-connected inverter
Installation
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(2) Connect the output cables of solar modules to the DC connector as figure 4.15 shows.
Loose the nut of connector and remove the isolation layer of the DC cable for about 15mm.
Insert it into the connector and press until heart the lock sound. Finally lighten the nut to a
torque of 2.5-3 Nm. 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;
(3)
After the DC connector is connected, use a multimeter to measure the voltage of the DC
input string, verify the polarity of the DC input cable, and ensure that the voltage of each
string is within the allowable range of the inverter, as shown in Figure 4.16.
Figure 4.16 DC input voltage measuring
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.
Step 2: After connecting the terminal, inset it into the MC4 terminal of the machine
(1)
Connect PV string to the inverter and ensure tightly-fastened, as shown in Figure 4.17
(2) When removing the DC connector from the inverter, insert the head of the straight
screwdriver into the raised hole in the middle of the connector, and force the movable end
of the connector to exit.
