Item：Outdoor Full Color LED Message Sign for Station
Size: 0.856sq.m*50sets
Date: Nov.20
Location:Qatar
Outdoor Full Color LED Message Sign for Bus Station
Ground system
DC ground to earth
It is to connect the digital circuit equipotentially with the ground, which overcomes the problems caused by DC ground suspension, especially in the bus station LED display system, there is a large amount of static charge accumulation, and the static electricity of the human body will affect the operation of the equipment, so After the direct current ground is connected to the earth, a path is found for the static charge.
We use the parallel grounding method to connect the DC ground to the ground. The potential difference between the points of this connection is very small, and lower ground resistance can be obtained.
Safe protection ground
The safety protection ground in the bus LED display system is to connect the fixed columns of all the display units through the installation skeleton, and then use the grounding bus to connect them to the ground or to the center line of the power distribution cabinet.
