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Solarpower24.it by Barba S.r.l. – via Locchi, 3F – 47122-Forlì – Italia
Tel/What’s up +39 05431995799 – web www.solarpower24.it – email solarpower24@solarpower24.it
PV Connection
CAUTION: Before connecting to PV modules, please install separately DC circuit breakers between inverter
and PV modules.
NOTE1: Please use 600VDC/30A circuit breaker.
NOTE2: The overvoltage category of the PV input is II.
Please follow the steps below to implement PV module connection:
Step 1: Check the input voltage of PV array modules. This system is applied with two strings of PV array. Please
make sure that the maximum current load of each PV input connector is 18A.
Step 2: Disconnect the circuit breaker and switch off the DC switch.
Step 3: Assemble provided PV connectors with PV modules by the following steps.
Components for PV connectors and Tools:
Female connector housing
Female terminal
Male connector housing
Male terminal
Crimping tool and spanner
Prepare the cable and follow the connector assembly process:
Insert striped cable into female terminal and crimp female terminal as shown below.
Insert assembled cable into female connector housing as shown below.
Insert striped cable into male terminal and crimp male terminal as shown below.
Insert assembled cable into male connector housing as shown below.
Then, use spanner to screw pressure dome tightly to female connector and male connector as shown below.
CAUTION: Exceeding the maximum input voltage can destroy the unit!! Check the system before wire connection.
WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single
crystalline and poly crystalline with class A-rated and CIGS modules.
To avoid any malfunction, do not connect any PV modules with possible current leakage to the inverter. For
example, grounded PV modules will cause current leakage to the inverter. When using CIGS modules, please
be sure NO grounding.
CAUTION: It’s required to use PV junction box with surge protection. Otherwise, it will cause damage on
inverter when lightning occurs on PV modules.
Strip one cable 8 mm on both end sides and be careful NOT to nick
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