CSA C653-18 PDF Download

The CSA C653-18 standard establishes the minimum performance requirements for luminaires used in roadway and street lighting applications. It is the fifth edition of this standard and supersedes previous editions published in 2013, 2008, 1994, and 1992.

The scope of the standard includes specifying photometric performance requirements for luminaires based on unit power density (UPD), which is a measure of the efficiency of the luminaires. The standard addresses three types of light sources: clear high-pressure sodium (HPS) lamps, clear metal halide lamps, and light-emitting diodes (LEDs).

The standard defines various parameters for evaluating the photometric performance, including average luminance, luminance uniformity ratio, and veiling luminance ratio as per ANSI/IES RP-8. It also considers nominal input power and rated lamp lumens for HID sources, and luminaire input power and rated luminaire lumens for LED sources. The photometric performance of LED sources is measured using absolute photometry as per IES LM-79.

It is important to note that the standard is not a design document and does not provide specific specifications for roadway configurations. Instead, it establishes the efficiency of luminaire photometric performance based on typical roadway configurations. Tables provided in the standard can be used to establish maximum UPD values for typical applications. However, user-specific road geometries may differ from the templates used in the creation of these tables, and requirements of specific designs might necessitate different variations in distribution, lumen packages, and wattages. Therefore, users should review UPD as a measure of comparison across suppliers and within their own geometry, taking into consideration that UPD levels may vary from the tables in the standard.