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Time: 2015/05/22       Author:Sansilighting

Hangzhou Metro Line 4 is listed as a key construction project of Zhejiang province in China.  Spanning 20.8 kilometers across, it passes through Lines 1, 2, 3, 5, 6, 7 as an interconnecting line. 

This contruction is a response to China’s calling on energy conservation and emissions reduction.  Hangzhou line 4 has utilized LED for its lighting infrastructure.  The first phase comprised of more than 20,000 lighting fixtures using LED lamps and lanterns, all provided by Sansi.  Fixtures included: LED panel lights, LED tube lights, LED wall lamp, LED dome light, LED round basin to absorb dome light and customized ceiling display that simulated a starry night using LED lights.

The first phase was carried out in in strict accordance with China’s metro railway lighting standards.  All fixtures and lamps specified into the project underwent strict inspection in terms of various technical parameters, size, shape, aesthetic appearance, functions and performance testing.  In addition, they also underwent inspection by the National Electric Light Source quality supervision.  This covered safety, electromagnetic compatibility test, light distribution, color temperature paramets and environmental testing to ensure the project conformed in keeping the integrity of energy saving.

The 20,000 LED fixtures utilized in the project had a power factove above 0.9, a service life of up to 50,000 hours at the very least and has an output of 80lm/w, much higher than the output of the traditional sodium lamp.  This greatly contributed to the entire province’s energy savings and has achieved international standards.  Sansi LED lighting is resistant to moisture, corrosion and resistance, is anti-static vacuuming, anti-rust and has protection performance during fire accidents. 

SANSI’s special cooling technology helps to reduce the temperature of the lamps and lanterns, thereby allowing the service life to extend than the average lighting fixture.  

In every phase of the lighting project, each site brings about brightness but is not glaring to the eye.  Each project is similar but not identical.  Each site was modified with its own special elements, with touches of modern characteristics and personalization. The “Citizen Center” used to reflect a starry night of the cityscape is found at Jiang Jin Road Station.

SANSI is responsible for opening the gateway to modern lighting through its LED fixtures throughout various subways of China such as Shanghai, Zhengzhou, Wuxi, Hangzhou, Ningbo, Nanjing, Shenzhen, Dongguan, and other provinces and cities.  Since then, many others have adopted using LED lighting technology for other domestic metro lines within China.  SANSI is transforming to become China’s largest metro LED lighting supplier.