MPP Solar MPI 12KW WP - PV Module (DC) Connection

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6. PV Module (DC) Connection
NOTE1: Please use 1000VDC/20A circuit breaker.
NOTE2: The overvoltage category of the PV input is II.
Please follow below steps to implement PV module connection:
Step 1: Check the input voltage of PV array modules. The acceptable input voltage of the
inverter is 350VDC - 1000VDC. This system is only applied with two strings of PV array.
Please make sure that the maximum current load of each PV input connector is 23A.
Step 2: Disconnect the circuit breaker and switch off the DC switch.
Step 3: Assemble provided PV connectors with PV modules by the following below steps.
Components for PV connectors and Tools:
Female connector housing
Female terminal
Male connector housing
Male terminal
CAUTION: Exceeding the maximum input voltage can destroy the unit!! Check the
system before wire connection.
WARNING: Because this inverter is non-isolated, only two types of PV modules are
acceptable: single crystalline and poly crystalline with class A-rated.
To avoid any malfunction, do not connect any PV modules with possibility of leakage
current to the inverter. For example, grounded PV modules will cause leakage current to
the inverter.
CAUTION: It’s requested to have PV junction box with surge protection. Otherwise, it
will cause inverter damage when lightning occurs on PV modules.