How to choose the best technology for surge protective devices

To choose the best technology for surge protective devices, we should consider the following technical parameters (include but not limited to):

1. Type of surge protective devices according to EN61643-11/IEC 61643-11

2. Nominal Voltage (Un)

3. Maximum Continuous Operating Voltage (Uc) /Maximum Continuous Operating Voltage for PV System (Ucpv)

4. Voltage Protection Level (Up)

5. Nominal Discharge Current (In)

6. Maximum Discharge Current (Imax)