... Device in LYD4 series is used on AC 50/60Hz and 380V power supply system, such as TN-S, TN-C-S, TT, IT, etc ... of lightning strike at the joint of LPZ1, LPZ2 and LPZ3. The products comply with IEC61643-1, GB18802.1. The housing is fixed on ... equipment and in front of control equipment or nearest socket box of control equipment.Features:1. it is modularization design and can be ...