Outdoor Solar Power System Solution For Traffic Lights

Solution Overview

⇒Project Background & Pain Points

Traffic signal facilities distributed in remote mountain roads, suburban corners, temporary construction intersections and areas with poor grid power quality face prominent power supply difficulties:

1. Grid wiring requires road excavation and cable laying, with high construction cost and long cycle;
2. Unstable municipal voltage causes frequent power outages, leading to traffic light failure and hidden road safety hazards;
3. Humid, dusty, foggy and rainy outdoor environments easily damage conventional split solar power equipment;
4. Traditional separate solar controllers, inverters and batteries bring complicated wiring, difficult maintenance and short service life.

CONSNANT CNW4850L/CNW48100L series 6KW integrated outdoor solar power cabinet provides an all-in-one reliable power supply solution specially customized for traffic light loads, solving the above industry pain points comprehensively.

Overall System Composition

The integrated cabinet integrates all core power modules in one IP55 outdoor cabinet, no extra split equipment deployment needed:

1. Horizontal All-in-One Solar Charger Inverter: Core control unit supporting MPPT solar charging, mains AC charging and pure sine wave inverter output;
2. LiFePO4 Lithium Battery Pack (50Ah/100Ah, 48VDC): Long-cycle energy storage unit for 24-hour continuous power supply;
3. SNMP Communication Card: Remote real-time monitoring of voltage, power, battery SOC and equipment fault status;
4. PDU Power Distribution Unit: Standardized output interface for traffic light host, signal lamp groups and auxiliary monitoring equipment;
5. Intelligent Cooling Fan, AC/DC Lightning Protection Module, waterproof dustproof air intake and heat insulation roof;
6. Multi-communication ports: USB/RS232/RS485/Dry Contact/BMS for docking traffic signal central control platform.

System Working Modes (4 Intelligent Charging Modes Adapted to Traffic Light Scenarios)

1. PV Only: Off-grid remote roads without municipal power, fully powered by solar energy;
2. PV Priority: Solar energy used preferentially, mains power as backup for cloudy/rainy days;
3. Mains Electricity Priority: Urban roadside intersections with stable grid, mains power main supply, solar as energy-saving backup;
4. PV&Mains Hybrid Charging: Simultaneous charging of lithium battery by solar panel and mains electricity, fast energy storage for continuous all-day traffic signal operation.

Core Advantages for Traffic Light Application

1. Stable & Uninterrupted Power Supply for Road Safety

• Pure sine wave AC output (220/230/240VAC, PF=1.0), harmonic distortion ≤3%, perfectly matching LED traffic light and signal controller power demand without light flicker;
• Dual output modes: mains bypass + inverter output, typical transfer time 10–20ms, zero blackout switching to ensure traffic lights work continuously during grid failure;
• Wide grid input voltage range, avoid frequent battery switching caused by voltage fluctuation in poor power areas, extend battery service life.

2. High-efficiency Solar Energy Utilization & Energy Saving

• Advanced MPPT tracking technology with 99.9% conversion efficiency, max PV input power up to 9000W to match large-area solar panel layout at intersections;
• Power saving idle mode to cut no-load loss; intelligent variable speed cooling fan reduces power consumption while realizing efficient heat dissipation;
• LiFePO4 battery with 3500+ charge-discharge cycles (80% DOD), low replacement frequency and lower long-term operation cost.

3. Full Outdoor Harsh Environment Adaptability

• Cabinet protection grade IP55: waterproof shutter front door, dust filtering air inlet, sun-proof heat insulation roof, anti-rain, mist, dust and moisture erosion;
• Wide operating temperature range: -10℃ ~ 50℃, storage temperature -15℃ ~ 60℃, adaptable to high-temperature summer and cold winter road scenes;
• Complete electrical protection: PV overcharge/short-circuit/reverse polarity protection, battery over/under voltage protection, AC & DC lightning protection, overload protection;
• Cabinet dimension 550×374×842mm, compact vertical integrated design, convenient pole-side installation without occupying extra road space.

4. Easy Installation, Maintenance & Remote Management

• Modular integrated design, all components pre-installed in cabinet, on-site only needs PV panel, mains cable and traffic light load wiring, greatly shorten construction period;
• LCD display + 3 LED status indicators, on-site real-time view PV power, battery capacity, output load and fault codes;
• Built-in SNMP card and multi-type communication interfaces, support remote cloud monitoring, fault alarm and parameter adjustment, reduce manual inspection frequency of scattered traffic intersections.

Application Scenarios

1. Remote off-grid rural mountain road traffic intersections;
2. Temporary construction site mobile traffic signal lights;
3. Suburban roads, tunnel entrances and coastal foggy areas with poor power grid;
4. Highway ramp signal lamps, pedestrian crossing signal equipment;
5. Integrated traffic monitoring + signal light all-in-one power supply projects.

Solution Conclusion

CONSNANT integrated outdoor solar power system replaces traditional split solar power equipment for traffic lights, realizes integrated installation, all-weather stable power supply, intelligent remote management and low whole-life-cycle cost . It effectively eliminates traffic safety risks caused by power failure, reduces municipal road power grid construction investment, adopts clean solar energy to lower carbon emission, which is an ideal sustainable power supply solution for modern urban and rural traffic infrastructure.