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  • IES
    ANSI/IES LM-61-20 (R2023) Identifying Operating Factors for Installed High Intensity Discharge Luminaires
    Edition: 2020
    $54.18
    / user per year

Content Description

While lighting manufacturers and independent testing laboratories generally follow IES published procedures for testing luminaires under controlled laboratory conditions, measurements made in the field to confirm predicted performance can be influenced by a variety of factors. Under laboratory conditions, care is exercised in the control of the precision and accuracy of the photometric measurement conditions, including luminaire orientation, test distances, ambient temperature, electrical supply and regulation, and selection of lamps for optimal stability and arc tube geometry. In the field, this level of control and accuracy in operating and measurement conditions is seldom possible, and measurements made of installed photometric performance can deviate from predicted performance levels. This document identifies many of the potential factors that apply to outdoor HID luminaires (mercury vapor, metal halide, and high pressure sodium) and low pressure sodium lighting equipment utilizing core and coil ballasts for contemporary lamp wattage designations. This document outlines factors that can cause differences between calculated and measured illuminance and luminance values of outdoor HID and low pressure sodium lamps and luminaires. It does not offer solutions, nor does it quantify all of the possible variables that might be encountered.

Subscription Information

MADCAD.com IES subscriptions are annual and access is concurrency based (number of people that can access the subscription at any given time).

 

Some features of MADCAD.com IES Subscriptions are:

 

- Floating concurrency model: Set your concurrency level and share your IES Subscriptions among your offices enterprise-wide.

- Online access: With MADCAD.com’ s web based subscription service no downloads or installations are required. Access IES Standards from any browser on your computer, tablet or smart phone.

- Customized Subscriptions: Select different number of concurrencies based on your needs. Set higher number of seats for more used IES Subscriptions and lower seats on standards with less need.

 

- Immediate Access: As soon as the transaction is completed, your IES Subscription will be ready for access.

 

For any further information on MADCAD.com IES Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.

About IES

The Illuminating Engineering Society of North America (IES) is the recognized technical authority on illumination. For over 100 years; its objective has been to communicate information on all aspects of good lighting practice to its members, to the lighting community, and to consumers, through a variety of programs, publications, and services.

IES is a forum for the exchange of ideas and information, and a vehicle for its members' professional development and recognition. Through technical committees, with hundreds of qualified individuals from the lighting and user communities, IES correlates research, investigations, and discussions to guide lighting professionals and lay persons via consensus-based lighting recommendations.

The Society publishes nearly 100 varied technical publications, and works cooperatively with related organizations on a variety of programs and in the production of jointly published documents and standards.

Local IES Sections and many lighting corporations offer formal educational programs on lighting, utilizing material developed by IES. Sections offer programs related to specific applications based on IES standards - seminars on sports and recreational lighting, lighting industrial facilities, roadway lighting, museum lighting, to name a few. Virtually every curriculum devoted to lighting - from beginner to advanced - includes IES educational materials.

IES is almost 8,000 members strong. Its members work with lighting in a variety of capacities - lighting designers, architects, interior designers, government & utility personnel, engineers, contractors, manufacturers, distributors, researchers and educators - throughout the United States, Canada, Mexico - and around the world. They share a common interest in lighting, and a common desire to promote the use of the latest, most innovative lighting technologies, with a focus on judicious use of energy in all lighting applications
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