Samsung XA067T User Manual page 49

Lighting Strike Protection of Electric Closet
Every electric closet of LED display screen must be installed with lightning protection
device equipment. The requirement specification should be same as shown below.
Nominal discharge current In (8/20µs) :20 kA
The maximum discharge current Imax (8/20µs):40 kA
Voltage protection level:
Up in ln AC385-505V:≤1.7kV
TA ˂25ns
Power distribution box
Since the LED screen product is an industrial-class product and has a relatively large
power, it uses a high-power switch power supply. So, the start-up impact current at startup
is relatively large. And then, the air switch which is used in the power distribution box
needs to use a D-type switch. Prevent the screen from jumping when starting
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