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

02/23/17 Explosion Proof Lights and Hot Environments

Article - February 23, 2016 By

450 Watt High Bay Explosion Proof LED Light Fixture - 30,000 Lumens - Surface Mounted - Class I Divi

Explosion Proof Lights and Hot Environments

Fixtures that are exposed to high ambient temperatures are prone to failure and malfunction. In industrial facilities with high lighting consumption rates, this is can be a complex issue to address, especially in hazardous locations where explosive dust and vapors are present. As a solution, establishments may apply explosion proof metal halide and incandescent fixtures with external ballasts.

Electrical Ballasts

Electrical ballasts are designed to monitor and limit the amount of current in a circuit. The two most common types of ballasts include electromagnetic and electronic. In industrial lighting systems, such devices provide optimal conditions for the fixture to start and operate. It is common for both components (lamps and ballasts) to be matched electrically (wattage, length and diameter) to ensure compatibility. Without a ballast, a lamp would be open to premature failure due to exposure to high voltages from the power source, causing it to overheat and burn out.

When turning on a light, the device initially pushes out high voltage needed to create an arc between two electrodes, or the electrical terminals found at the ends of electric discharge lamps. The ballast regulates the voltage to a lower setting once the arc has been established, and continues to supply steady current to ensure light output. It is important to consider that a switch is required to turn the fixture on/off and the ballast does not provide this function.

Optimal Operating Temperatures

During operation, ballasts generate heat (like any other electrical device out in the market today). Because of this, businesses must take external, internal and operating temperatures into consideration during lighting installation. Maximum heat dissipation must be carefully planned during design and ballast selection. Additionally, the units must be protected from moisture, weather and abnormal external conditions. Exceeding temperature thresholds can decrease the lifespan of the device and the lamp to the point of failure- though it is common for ballasts to require replacement and maintenance when used on a regular basis. For example, weatherproof ballasts have a maximum case temperature of 90 degrees Celsius, where below this threshold it can operate normally. Exposure to temperatures above +10 degrees Celsius of the ballast’s threshold may decrease its lifespan by 50 percent.

Low temperatures are also not ideal for ballast operation. This is because cold environments decrease the availability of vaporized gas within the arc tube of the lamp. As a result, the voltage requirements needed to create the arc increases to a point where the fixture will not start. Cold temperatures may also prolong a light’s warm-up period. Such events are easily avoidable by checking the minimum (or maximum for hot environments) temperature settings of the unit- usually listed on the label or technical specifications of the lamp.

External Ballasts and Hazardous Locations

Businesses may choose lamps with internal or external ballasts, depending on the needs of the facility. Internal ballasts are more common for mainstream applications and are more prone to failure compared to its external counterpart. This is because bulbs that rely on internal ballasts have a tendency to get extremely hot; and the fragile filaments break when the light is tampered during operation. Fixtures with external ballasts are sturdier by design and have a longer lifespan. Such units do not give off as much heat, which allows the filaments to maintain a cooler operating temperature. Moreover, external ballasts can be used in tighter enclosures due to its low heat output properties.

External ballasts may be applied in hazardous locations and hot environments. In such settings, the air may contain combustible dust and vapors that may ignite when in contact with electrical equipment. Under such circumstances, the fixture, wirings and controls must adhere to guidelines set forth in Section 500 of the NEC.

In hot environments, ballasts are at risk of overheating because they are a major heat source. It is best practice to rely on external ballasts to reduce reliance on ventilation, coolers and fans. Class P ballasts (the UL classification for thermally protected ballast) automatically disconnects from the power source when overheating. The device cools down and reconnects to the power supply through a resetter. The process repeats itself until the issue is corrected (called cycling). Lastly, to ensure functionality in hot environments, the area should also be well ventilated.

Related Categories/Products
Category/Product (click on link below for more information)
Articles - EXP
Articles - HAZLOC
Articles - Portable C1D1
Articles - Portable C1D2
Articles - EXP Handlamp Stringers
Home | Contact Us | Return Policy | Privacy Policy | Security Policy | Copyright © 2006-2018. All Rights Reserved.