to surge protection philosophy. In this paper we will elaborate further and see how type 1 and type 2 surge protection devices can be implemented as a right protection against surges. Common mode Overvoltage in common mode concerns all neutral point connections. They occur between the live conductors and earth (e.g. phase/earth or neutral/earth).
Florida's identification of a case of the coronavirus variant, first detected in the U.K., is a reminder that the pandemic remains strong as a new year begins. NEMA LS1, Low Voltage Surge Protective Devices , states in Section 2.2.7 (Protection Modes): “This parameter identifies the modes for which the SPD has directly connected protection elements, i.e. line-to-neutral (L-N), line-to-line (L-L), line-to-ground (L-G), neutral-to-ground (N-G).”. These surge protectors must be installed on symmetrical DIN rail and are available for most of the transmission lines: line voltage from 6 to 170V, bitrate up to 10 Mbit/s. These products are 1-pair surge protectors with removable module for easy maintenance.