Step 9 DC Main Switch

Concept

Vdc ms Voltage rating of main switch (V)

Idc ms Current rating of main switch (A)

Voc STC A Open circuit voltage at STC of PV array (V)

Isc STC A Short circuit current at STC of PV array (V)

Voc STC mod Open circuit voltage at STC of PV modules (V)

Isc STC mod Short circuit current at STC of PV modules (V)

Ns Total PV modules in series per string (units)

Np Total PV modules in portrait per string (units)