DB-4A series power lightning arresterDetailed product description：

DB-4A series power lightning arrester

Product use: DB-4A series power lightning arrester is used in LPZ1 and LPZ2 strong lightning protection zones to protect against overvoltage caused by lightning strikes in 220/380V three-phase distribution systems.
Industries of use: Aerospace industry, aviation ports, aviation flight, military combat command centers, telecommunications and telephone systems, RF equipment, satellite/microwave communication systems, wireless television stations and networks, computer systems, banking, investment and securities industry, medical equipment, printing machinery, boiler manufacturers, and all electrical equipment.
Product features: Adopting a four way protection mode of three-phase phase line to neutral line and neutral line to ground line;
Using specially designed high-energy MOV circuit breakers, with a 1mA voltage sensitivity of 620V, it can be safely used in 220V/380V AC power supply systems.
The use of high-energy MOV gate diversion technology (national patented technology) ensures that each gate uniformly bears the lightning current, so that the protective current of each phase can withstand a strong 140KA lightning current after diversion.
Automatic disconnection device: When any protective gate exceeds its allowable lightning current and is damaged, the circuit will automatically disconnect from the entire power supply circuit to ensure normal power supply.
Failure indication;

Automatic lightning strike counting;

project	Technical performance)
Working Voltage	220/380V AC50Hz
Surge starting voltage	600V±10%
8/20 μ s rated flow rate	70KA
8/20 μ s maximum flow rate	140KA
10/350 μ s maximum flow rate	30KA
10/350 μ s30KA residual voltage	〈1.2KV
8/20 μ s 70KA residual voltage	〈2.2KV
Wiring resistance	The grounding resistance should be less than 10 Ω, and the grounding wire should use a wire with a diameter of ≥ 16mm
wiring method	The connecting wire should use a wire with a diameter of ≥ 10mm ².
Installation method	Fixed installation

DB-4A series power lightning arrester