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3.4.1 Connection of solar modules
The below steps should be followed to connect the solar modules:
1.
Lighting, short-circuit and other protection measures meeting the local electrical safety laws and regu-
lations are needed before proceeding to AC connection;
1.
Connect the output cables of the solar modules to the DC connector as shown in figure 13A. Remove the
isolation layer of the DC cable for about 8-10 mm. Insert the conductor part into the connector at the
appropriate position, crimp the MC4 DC terminal and tighten the nut with a torque of 2.5-3 Nm. Ensure
the poles of solar modules are well connected with the connectors;
2.
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 allowa-
ble range of the inverter, as shown in picture 13B below.;
PD201809 AEG GRID-TIED THREE-PHASE SOLAR INVERTER (4-10 kW) V.2-18 EN
adequately dimensioned. Do not switch off the AC and DC breakers before the inverter
is electrically connected.
Read and follow the instructions provided in this section while observing all safety warnings.
Always note the rated voltage and current defined in this manual. Never exceed the limits.
Figure 13A: Connection between DC connector and solar modules
Only cables qualified according to the local electrical safety laws and regulations are
allowed to be used for connection.
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