Figure 7.61 Arrangement of SPDs in a system and the resulting effective
cable length
arresters in accordance with the IEC 62305-4 standard series in a single device. This allowed the realization of a series connection directly via the device. Figure 7.62 shows such a series connection in the form of an operating circuit diagram. From Figure 7.63 it can be observed how advantageous it is to implement a series connection with the aid of a busbar.