For AC power supply lines entering buildings, at the junction of LPZ0A or LPZ0B and LPZ1 areas such as the main distribution box of the line, a surge protector of Class I test or a surge protector of Class II test should be installed as the first-level protection; at the. For AC power supply lines entering buildings, at the junction of LPZ0A or LPZ0B and LPZ1 areas such as the main distribution box of the line, a surge protector of Class I test or a surge protector of Class II test should be installed as the first-level protection; at the. Surge protectors (Surge Protective Devices, SPD) installed in distribution board panels are primarily used to protect electrical equipment from transient voltages (surges or spikes) caused by lightning strikes, power grid fluctuations, or other factors. Depending on the application and protection. Eaton has an extensive family of surge protective devices (SPD) for any facility or application. Using our Powerware and Innovative Technology branded products will ensure that the quality of power required to maximize productivity in today's competitive environment will be supplied in the most. Surge protection in main power distributions Incorrectly installed surge protection poses a liability risk for planners and installers of switching devices. Connecting cables that are too long often lead to problems.
