Technical Requirements For Surge Protectors
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1. Level 1 surge protector: SPD (main distribution cabinet) at the junction of LPZ 0 and LPZ 1
1) Maximum continuous operating voltage Uc: 385V, 50Hz
2) Rated working voltage Un: 230/400 Vac
3) Lightning impulse current Iimp: ≥25kA (10/350μs)
4) Nominal discharge current In: ≥25kA (8/20μs)
5) Voltage protection level Up: L-N≤1.8Kv, N-PE≤1.5Kv;
6) Protection mode: 3+1 mode
7) With remote indication contacts, installed on standard DIN rail;
8) Composite structure, no leakage current and no continuous current;
9) Equipped with the same brand backup protection device SSD as the surge protector, with the SPD's Iimp impulse current uninterrupted capability, and the SSD must have a working status indication window.
