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
Metal-oxide arrester with disconnector and bracket used for ML AC power system, and the lightning counter is optional
T1+T2, High duty T2, T2 and T3 SPDs used for 230/400 Vac power supply system of indoor/outdoor cabinets
T3 SPD protects the power supply system; PD series protects signal system, e.g. RS 485, RS 422, network, etc.
Compact 2 in 1 SPD and coaxial SPD used for protecting power supply and network & video monitoring systems
T3 SPD protects the power supply system, PD series protects the signal system of sensors/transmitter/PLC/DCS,etc.
