Lightning arresters and lightning arresters can prevent the direct lightning strikes outside the building, and the damage caused by the induction lightning and surge voltage through cables, communication lines, metal pipes and so on is unavoidable by the external lightning protection system. Therefore, indoor electrical equipment, communication network, household appliances and so on need to be protected by special lightning protector.
The KEJIA KDY series power lightning protection device is designed according to the IEC standard. In the shortest time, it can connect the protected line into the equipotential system, limit the surge to a certain voltage protection level, and quickly release the high voltage pulse energy caused by the lightning strike to the earth, reduce the potential difference between each connection, and protect the distribution of the user. The role of preparation.
The flow capacity of the KEJIA KDY-I-25S power supply lightning arrester is large, and it is a switch type first class lightning protection protector. The lightning arrester has no leakage flow and no continuous flow. The performance is reliable and the work is stable. According to the principle of lightning protection, the power line still has high residual pressure after the lightning energy is released once, and the lightning energy should be released step by step through the rear lightning protection device of the lightning protection system so as to effectively protect the terminal electric equipment.
When the KEJIA KDY-I-25S type power supply lightning arrester is used, the three-phase four wire power supply can be used between four pieces of "KDY-I-25S type" and connected between the protected and earth (L1, L2, L3, N line and PE) lines, which are called TN-S connection, and three "KDY-I-25S" can be used for the three-phase three wire power supply and are connected to the protected end and earth (L1, L2, thread, etc.) Between lines, the lightning protection of single-phase power supply can be connected to a KDY-I-25S type power lightning protector between L and N line to ground (PE).
Parametric schematic diagram
Nominal voltage Un: 220/380V AC
Maximum continuous working voltage Uc: 385V AC
T1: In: 25kA nominal discharge current (8/20 s)
The impact of discharge current Iimp:25kA (10/350 s)
Voltage protection level Up<2000V
It is recommended to choose a backup protector SCB: KHB-I-25
Lead L/N: = 6mm2
Under the lead of PE: 10 mm2
Installation way: 35mm DIN guide, EN60715 standard
Size diagram (unit: mm)