IEEE C136.17-1997 pdf download American National Standard for Roadway Lighting EquipmentÑ Enclosed Side-Mounted Luminaires for Horizontal-Burning High-Intensity- Discharge LampsÑMechanical Interchangeability of Refractors
1.Overview
1.1 Scope
This standard covers the dimensional features and the material of refractors of the approximate shape showrin Figures 1 through 3, and as described in ANSI C136.14-1988, American National Standard for RoadwaLighting Equipment-Enclosed Side-Mounted Luminaires for Horizontal-Burning High-Intensity-Discharge Lamps.
1.2 PurposeThis standard provides
a)A description and diagrams of substitute refractors for the original refractor when replacement isnecessary.
b)The dimensions for a good fit for the refractor at the points of contact, the points of attachment, orboth, to the reflector or the housing, or to both the reflector and the housing.
c)Requirements for light distribution acceptable to the user, but not necessarily equal to the originaloptical system.
NOTE–The optics package consisting of the lamp, the reflector, and the refractor configuration is unique to the individ.
ual fixture. Replacement of a single fixture component will not guarantee the same optical performance.
The requirements and figures in this standard will help keep the number of refractors needed on service vehi-cles to a minimum.
2.Physical dimensions
Figures I through 3 show the refractors’ points of contact, points of attachment, or both, to the reflector, thehousing,or both.
The dimensions given in these figures are for interchangeability, and other variants satisfying nondimentioned provisions may be capable of otherwise equivalent performance.
3. Materials
Refractors may be made of heat-resistant glass, polycarbonate, acrylics, or other suitable materials as specified by the user.
IEEE C136.17-1997 pdf download
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