Why Is A Coaxial Signal Surge Arrester Needed When Transmitting Analog Signals Via Coaxial Cable?

Lightning discharges generate extremely high voltage pulses that induce strong current transients in space and cause induced overvoltages near lightning strike points. Coaxial cables, serving as channels connecting external feeders and internal equipment, create a significant potential difference between their center conductor and shielding. This potential difference propagates along the cable to the ports of connected equipment. Without any protection, such drastic potential changes can damage or malfunction sensitive circuits in the connected equipment.

The setting of coaxial signal 33kv surge arrester can provide a lower potential path when such a voltage pulse is generated, introducing the overvoltage in the coaxial cable to the ground wire outside the device. The 33kv surge arrester price is designed to not interfere with the quality of analog signals during normal signal transmission, and to respond quickly to sudden power surges by directing extremely high transient energy to the ground terminal, thereby reducing abnormal voltage stress transmitted to the terminal equipment.

In scenarios with external antenna feeders or long-distance transmission paths, such as broadcast towers, monitoring systems, and wireless communication base stations, induced surges entering the equipment room via coaxial cable are a real threat path. By deploying 400 kv lightning arrester at both the antenna and device ends, the likelihood of lightning-induced voltage being transmitted to the internal system along the coaxial cable can be reduced, thereby improving the overall system stability and long-term operating performance.