Eaton PV240 User Manual

Eaton Corporation Page 26 Ver 1.16.2 Hardware FunctioningA. Protection MOV for DC Input SideIt is the surge protection that is equipped and used to protect input circuitagainst excessive voltage on the DC connections.B. Bypass Terminal block for DC Input SideIt is the bypass terminal block for solar (+) and solar (–) polarity that usedto co-operate with an external combiner box and external fuses. Themaximum current of this DC input bypass terminal block is 38A and therequired torque of the screws is 20 Kgf-cm.When the PV Inverter is connected to the PV module through an externalcombiner and external fuses are used, the configuration of DC input cablecan be connected with the bypass terminal block directly.Figure 6.2.1: Connecting DC Cables with Bypass TerminalIMPORTANTIf the DC input cable is connected with the bypass terminal blockdirectly, it is important to ensure the limitation of maximumcurrent is below 38A through a single pair cable as figure 6.2.1mentioned.C. DC/AC DisconnectIt is the disconnect switch that is used to turn-on and turn-off the power ofthe PV Inverter. The switch disconnects both the DC and AC voltage tothe PV Inverter.Positive (+) Polarity Position Negative (–) Polarity Position