As the main representative of modern traffic engineering construction, expressway has brought a comprehensive role in promoting the economic development. In the development of expressway, the mode of interconnection with modern high-tech electronic equipment has been realized, e.g., toll collection, communication, monitoring, distribution and power supply, but the lightning protection measures are not enough, which brings a certain security threat and damage to the daily operation equipment of the highway.
In order to reduce and prevent the lightning damage of expressway, PTG provides an complete solution based on three systems of highway communication, monitoring and toll collection, including:
- Mid-voltage AC Substation
- Low-voltage power supply and distribution system for toll station, square lighting, tunnel etc.
- Monitoring system
- Communication system
- Environmental monitoring and weighing system
In accordance to:
1. IEC 62305: Protection against Lightning
2. IEC 61312: Protection against Lightning Electromagnetic Impulse
3. IEC 61643-11: Low-voltage Surge Protective Devices
4. IEC 61643-21: Surge protective devices connected to telecommunications and signaling networks - Performance requirements and testing methods
PA 17K-5W-N10, equipped with a release and a unique mounting bracket, is used in 10 kV medium-voltage AC systems. It can also be optionally fitted with the outdoor-specific counter PM LC-010.
T1+T2, T2 and T3 SPDs are used in the 220/380 Vac power supply and distribution systems for expressway toll stations, tunnel power, and square lighting.
PD LA-24W is used in various signal - transmission systems. PD RJ5-2X1000-4 is used for the protection of network - transmission systems. PE 30-2W3-21R-S25 is used for the precision protection of signal - power - supply systems.
Gigabit high-speed network (RJ45 interface), power combo, and BNC connector coaxial SPDs are used in video surveillance systems.
PE 255-6W3-21R-S25 is used for the precision protection of the system power supply, and PD LA-24WS-2 is used for the protection of signal systems such as various sensors, transmitters, and PLC/DCS.