LYD1-B 80 SPD

LYD1-B 80 SPD In three phases and four wires system, all three phase lines and one neutral line to earting line have SPD to be protected, in normal service,the SPD is at the state of high resstance, when network produce surging over-voltage due to thunder or other resons, SPD will be conductive within short time(ns),lead surging voltage into ground,consequently to protect the electric appliances of network. After surging voltage passed by SPD,and disappeared, SPD recover in high resistance.It will not have influence on the normal service on network. Technical parameter Model.and specification LYD1-60BLYD1-80BNo. of poles 1P 2P 3P 4P 1P 2P 3P 4P Network.service voltage Un(V) 220380220380Max.continuous operating voltage Uc(V) 230/320385/420230/320385/420Voltage protection level Up(KV) Less than 1.0/2.02.51.0/2.02.5Max.discharging current(8/20 us) (KA) 6080Normal.discharging current (8/20 us) (KA) 3040Response time(ns) Less than 25Protection grade IP20Application Primary protection for in line