Question 1

Can Rei be higher than 1?

Accepted Answer

Yes, Rei can be higher than 1. When the illuminance on strips outside of road is higher than illuminance on lanes of road because of bad light distribution, the Rei can be over than 1.

Question 2

What’s the difference between EN13201-2:2004 and EN13201-2:2015?

Accepted Answer

There are some differences between EN13201-2:2004 and EN13201-2:2015. For example, as mentioned in the text, the 2004 version has requirements for SR, while the 2015 version has requirements for Rei. In addition, the former has M1, M2, M3a, M3b, M3c, M4a, M4b, M5, M6, while the latter has M1, M2, M3, M4, M5, M6. These different lighting classes have some differences in U0, UI, Luminance, SR and Rei, but the differences are not much.

Question 3

What’s different lighting standard in different regions?

Accepted Answer

Both IEC (International Electrotechnical Commission) and IESNA (Illuminating Engineering Society of North America) play significant roles in their development. IESNA developed ANSI/IES RP-8-00 to provide guidance on designing and installing roadway lighting systems, which is applicable to the Americas region. And IEC developed the EN13201 includes EN13201-1, EN13201-2, EN13201-3, EN13201-4, EN13201-5, which is applicable to various regions (such as Europe, Africa, Asia and the Middle East). For example, EN13201-1 is about selection of lighting classes, EN13201-2 is about performance requirements of different lighting classes, EN13201-3 is about calculation of performance, EN13201-4 is about methods of measuring lighting performance, EN13201-5 is about energy performance indicators such as LPD.

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SR vs EIR in street lighting standard EN13201

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LED Street Light

Solar Street Light

Led Flood Light

Solar Flood Light

LED High Bay Light

High Mast Light

LED Traffic Light

LED Tunnel Light

LED Garden Light

LED Canopy Light

Led Bollard Light

Lighting Accessories

Smart Systems

Simulation Design

Smart Financing