Posts Categorised: Knowledgebase

Understanding the language of LED

Please download the attached document which provides a simple explanation of the most popular technical terms when talking LED. Download here: Langage_of_led_Ragni Should you have any questions arising from reading this document please don’t hesitate in contacting us.

WEEE – Waste Electrical and Electronic Equipment

What is it? As of July 2005, businesses, organisations and/or institutions have been required by law to register with the Environment Agency when they produce 200KG or more of Waste Electrical and Electronic Equipment (WEEE) containing Hazardous Waste. Ark Lighting Ltd is meeting its producer responsibility via membership of the Lumicom Producer Compliance Scheme.  Through…

Ingress Protection Explained – IP rating

Ingress Protection (IP) Ratings The IP rating system provides a means of classifying the degrees of protection from solid objects and liquids afforded by electrical equipment and enclosures. The system is recognized in most European countries and is set out in a number of British and European standards. These include: Classification of Degrees of Protection…

Comparison of LED v Other light sources including HID

A warehouse facility recently upgraded its lighting. Before the lighting improvement project it was illuminated by low CRI HPS lamps which were replaced with higher CRI lights. The luminous intensity before the retrofit was 376lux (35 foot candles) which fell to only 269lux (25 foot candles) after the re-fit project! A reduction of 28% in…

Photometry & Design

We can provide .IES or .LDT files for all products which can be used with most lighting design software. Alternatively we can offer design support service. Lighting Design is our service and understanding our customers goals is our strength. Using the latest technology in lighting design we can offer an economical solution for any application….

Funding by Ark Lighting

With over 60 years combined experience, Ark Lighting and Clear Asset can offer the most efficient lighting products combined with funding making the investment at the minimum cost neutral in the first 3-7 years with huge savings generated after that period. If you would like to benefit from tomorrows technology today, funding provided by Ark…

BS5489:2013 which replaces BS5489:2003

Change to BS5489:2013 (which replaces BS5489:20003) In 2013 the British standard was updated to recognise the use of the S/P ratio of a light source to determine the actual visible lighting level. The ratio of the luminous output of a light source evaluated according to the CIE scotopic spectral luminous efficiency function, V'(λ), to the…

Understanding LEDs

If we look at the Rebel ES specification in detail you will find it’s 700mA for 220 lumen output at 3.0V forward voltage. Which means the total LED consumption is 0.7A x 3.0V = 2.1W, delivers 220 lumen. So the LED efficiency should be 104.8 lm/W. Note: In 2013, the Rebel ES LED was updated to V-Bin, which delivers…

Frequently Asked Questions

Q. What are the standard planting depths for rooted columns? A. 5m Column* – 800mm 6m Column* – 1000mm 8m Column* – 1200mm 10m Column* – 1500mm *measurement of column out of ground Q. What fuse ratings are required for HID lamps? A. 70w require 6amps 100w require 6amps 150w require 6amps 250w require 10amps…