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)
LIGHT TOWERS IN STOCK
       
 

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   

Search:
Company Information

Product #:

         
Aevum Control Lighting and Equipment - IIoT
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
Megatower™
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
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
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
Flashlights
**********    
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
         

   
03/17/17 Isolated versus Non-isolated Drivers for LEDs

Article - March 17, 2016 By LarsonElectronics.com

Explosion Proof LED Light - Magnetic Mount - Aluminum Base - C1D1 150 Watt LED Light

Isolated vs Non-isolated Drivers for LEDs

Light emitting diodes (LEDs) are being developed to become more efficient and cost effective for industrial sectors. One of the ways manufacturers are contributing to this trend is through performance-enhancing designs. In particular, drivers are being optimized to improve the lifespan and reliability of LED fixtures.

Read on to understand the difference between isolated and non-isolated LED drivers.


Isolated LED Drivers

The circuit structure of an LED light with an isolated driver typically incorporates a flyback converter topology. This provides protection against fluctuating electrical currents via an isolating transformer. In this configuration, the LED driver’s output voltages may reach DC30-42V. This suggests that the parts are applicable for LEDs that use high power circuits above 15-20 watts, including outdoor fixtures. The transformer is also flexible, allowing individuals to step up or step up/down the voltage’s output using a variety of methods.

Isolated LED drivers refer to the positioning of the driver, away from the AC line of the fixture. Manufacturers may incorporate an isolated driver in their design to make room for cooling and shade features. From a safety perspective, this type of configuration is safer for consumers because it greatly reduces the possibility of electrical shock (individuals can touch the LED lamps, even during operation). By comparison, luminaries that are equipped with non-isolated drivers require insulation to prevent electrical shock.

From a cost perspective, lights that rely on isolated drivers are more expensive, because more parts are used in the design. When it comes to electrical efficiency rates, luminaries that support isolated power supplies are only around 88 percent efficient. Its non-isolated counterparts can reach up to 90 percent electrical efficiency, but are also considered to be less stable.


Non-isolated LED Drivers

LEDs with non-isolated drivers support buck or buck-boost topologies without an isolating transformer. The driver, which is not shielded from the AC power source, makes use of inductors as the averaging element. Non-isolated power supply output voltages range between AC30-84V, making it ideal for LEDs with high voltage, low current (15 watts and lower) requirements, such as indoor retrofit lamps. Meeting safety requirements set forth by various regulators, including UL and CE, are more difficult with non-isolated drivers. When using this type of driver, manufacturers must meet UL 8750 regulations for LED Equipment for Use in Lighting Products (Section 8.5.2, 8.5.2.1 and 8.5.2.2).

Issues with non-isolated configurations arise when LED components are mounted on a heat sink for thermal dissipation. For such cases, the heat sink, in its exposed nature, needs to be insulated from the AC input voltage. It is important to consider that insulation negatively affects a heat sink’s thermal conductivity properties, because it is not in direct contact with the parts that radiate high levels of heat. Additionally, if the heat sink is not grounded electrically, it can generate electromagnetic interference (EMI).

As mentioned earlier, a major drawback with non-isolated drivers is instability. Furthermore, the risk of electrical shock during handling is greater for operators, and the components are highly sensitive to electrical surges. Because of this, the LED chip is more prone to damage. To protect the units, manufacturers utilize voltage dependent resistors in the circuit’s design. The component is designed to interrupt electrical surges by responding to changes in the electrical current. Incorporating non-isolated drivers into LED fixtures can drive costs down, due to the straightforward configuration of the circuitry.





Related Categories/Products
Category/Product (click on link below for more information)
LED Bulbs
Low Voltage LED Machine Lights
LED Outdoor Lighting
LED Mining Lights
High Bay LED Lighting
Home | Contact Us | Return Policy | Privacy Policy | Security Policy | Copyright © 2006-2018. All Rights Reserved.