Register Here | Login | My Account | Shopping Cart | Customer Service | Search| Items in Cart (0) | Quotes (0)
Call 1-800-369-6671
(Military/Intl Sales - 214-616-6180)

Vast Inventory for Fast Shipping. Custom Builds Available, Rentals and Sales.
Most items in stock for fast shipping!! UPS Ship Map Credit cards & Paypal Accepted
Home - Articles You're NOT logged in, Please log in   

Company Information

Product #:

ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Yacht Engine Room Lights
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Aevum Control Lighting and Equipment - IIoT
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
Recharging Spotlights
Fire Rescue Lights
LED Street Lights
Utility Lights
Hazard Lights
Strobe Lights - Battery Operated
Strobes & Beacons
Strobe Light Bars
Headlights - Headlamps - Hard Hat Lights
Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
Power Plant Lighting
Refinery lights
Environmental Services Lights
Aerospace Lights
Chemical Plant Lights
Food Grade Safe Lights
Film and Entertainment Lights
Handheld Meters and Devices
Waste Water Treatment Lights
Mining Lights
Ship Yard Lights
Work Site Lighting

12/02/13 Group Relamping, Rated Life, and Economic Life of Lighting Systems

Article- November 11, 2013 By Larson

1000 Watt Metal Halide

Larson Electronics 1000 Watt Metal Halide

A significant portion of the costs associated with industrial and commercial lighting systems comes from the need for regular maintenance of these systems. Effective lighting must do more than simply illuminate the targeted area, they also play a direct role in efficiency, task performance, safety, and more. When first installed a lighting system will perform to best of its potential, but this performance can drop off significantly over time, which in turn can have a detrimental effect on business performance that can be difficult to notice and gauge because of how this drop occurs incrementally. For most of us, a lamp fails when the bulb burns out, but for industry, lamp life is not determined simply by lamp failure but by the lamps “economic life”. Determining a lamps economic life and scheduling maintenance around it ensures consistent peak lighting system performance and thus helps reduce losses and operating costs over the long term.

Rated life and economic life are two different things and are not interchangeable. Rate lamp life generally refers to the average amount of time before a lamp is expected to stop operating. Economic life on the other hand takes into account factors such as lumen output, color quality, and operating efficiency. Economic life is determined by the point at which a light begins to exhibit significant reductions in these performance parameters and is generally accepted to be an average of 60% of the rated life of a lamp.  

Unlike home and residential lighting where it is most economical to perform spot replacements as lamps fail, industrial and commercial sectors benefit most from group relamping. Large facilities relying on metal halide lighting perform best when lighting systems are at their peak performance. By the end of these lamps rated life however, output drops significantly, as much as 40%. Additionally, as metal halide lamps age they exhibit significant color shifting, that is, the color temperature of the light changes as well. This is why it is not uncommon to see stadiums or warehouses for example with several lamps appearing to glow a pink or reddish color while others are producing bright white output. Those colored lamps have reached the end of their useful life and thus are due for replacement. When many lamps begin to display dimmed output and color shifting, they reduce overall illumination as well as degrade overall light quality. This can have an adverse effect on worker performance, workplace safety, and customer perceptions of the location.

Group relamping should be performed according to lamp economic life and essentially refers to the process of performing maintenance on a comprehensive level, replacing as many lamps as needed if not all in order to maintain overall output and light quality at peak levels while addressing the rest of the lighting system as well. Although lamps may still be operational, and even appear to be operating correctly, replacing lamps according to economic life and rated life is more cost efficient. The reasons for this are many, and primarily consist of savings found through less frequent maintenance intervals and maintained peak performance.

In most cases, particularly with large scale applications, the most effective maintenance solution involves contracting maintenance to outside professionals. Since on site workers may not be qualified to service high power lighting systems, and time spent away from their normal tasks spent servicing lighting represents lost productivity, outside contractors make the most practical sense. For those who perform their own servicing in house however, group relamping still remains the most cost effective option as the benefits found with a lighting system operating at peak performance still remain.

First and foremost, group relamping keeps the system working at peak output. Newly installed systems obviously operate at peak performance. Performance drops as the lights age however, and by the time they near the end of their rated life, most standard metal halide lights will have lost 40 to 50% of their original light output. The mount of degradation that takes place is dependant on many factors, and drop off can be lower or higher, but when we perform servicing before the lamps reach the end of their rated life and instead focus on servicing according to economic life, we avoid reaching this state of output decline.

Additionally, group relamping allows us to address the system as a whole on a consistent basis, performing fixture cleaning, repairs to damaged fixtures, and perform system inspection on a comprehensive basis. As a result, potential future problems are found and avoided and the cleaner fixtures run cooler, which helps to improve lamp longevity, thus reducing costs. It is also important to note that by maintaining the system at optimum levels we also maintain the aesthetic appearance of the area as well as the security and safety that a well lit work space helps to foster.  

Consistent color temperature is another important factor group relamping addresses. As mentioned earlier, most metal halide and fluorescent light systems experience color shifting over the life of the lamp. When we spot replace lamps, the result is a mixture of lamps operating at the correct color temperature while others display reduced light quality. This creates an environment where light quality and performance varies from one part of a facility to the next. When a program of group relamping is followed however, all of the fixtures in a location tend to experience color shifting at a more uniform rate, and when we perform service according to economic life rather than rated life, color shifting is reduced to minimal occurrences and uniform performance maintained.

As light output from metal halide and other HID light sources declines, efficiency is adversely affected. A lamp will consume the same amount of electricity, but since lumen output and color quality has degraded, the light is no longer maintaining an efficient lumen to watt ratio. Additionally, many HID light systems such as metal halide can actually consume more electricity as lumen output goes down, further reducing efficiency and increasing costs associated with energy consumption. Group relamping prevents this efficiency drop, thus maintaining the energy efficiency of the lighting system as a whole and keeping costs consistent and low.

Although group relamping might initially seem more costly initially, the savings are realized over the course of annual operation. A servicing plan built around the economic life of the fixtures reduces costs incurred from downtime and the labor needed to make repairs, and prevents the need to frequently take employees away from their normal duties in order to perform servicing when lamps burn out. The benefits of group relamping include consistent optimal light output and quality, consistent worker productivity and safety, and higher efficiency leading to lower energy costs.

Home | Contact Us | Return Policy | Privacy Policy | Security Policy | Copyright © 2006-2018. All Rights Reserved.