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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
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Hot Work Permit Lighting and Equipment
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Phase Converters - Single to Three Phase
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Plastic Handcuff Key
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Explosion Proof Lighting
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Black Friday & Cyber Monday Specials
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Work Site Lighting

02/09/17 Comparing Lighting Capabilities of Explosion Proof Luminaries

Article - February 9, 2016 By

480V C2D1 Explosion Proof 300 Watt LED Flood Light Fixture - Paint Spray - 140 Degree - 35,000 Lumen

Comparing Lighting Capabilities of Explosion Proof Luminaries

Explosion proof lights are essential for businesses that work with and around hazardous compounds. These days, there are numerous types of explosion proof luminaries available on the market. Such options range from handheld flashlights and drop lights to high bay fixtures and light towers. Additionally, customers must choose from a handful of lighting technologies that come with their own unique set of advantages and characteristics. This article compares the following explosion proof lights for use in hazardous locations: Explosion Proof LED Flood Light Fixture (EPLC2-LED-2X150W-RT-140DB-480V) and Explosion Proof High Pressure Sodium Light (HALPRM-1000WHPS).

Light Output and Layout

During light output, the explosion proof LED fixture emits a narrow, intense flood pattern beam with a brilliant white color (3,000K, 4,500K and 5,000K color temperature ratings). It also produces colors accurately with a Color Rendering Index rating of 70. The fixture can produce 35,000 lumens while drawing 300 watts. This luminary comes with a failsafe feature that can boost the general lifespan of the unit. It comes with multiple LED drivers and 24 individual LED boards that ensures parts of the lamp continues working in the event of driver failure. Voltage options for the LED lamp includes 347-480V AC, 50/60Hz (multi-voltage capable).

The explosion proof HPS lamp also supports a flood pattern configuration during output, and offers wider coverage than the LED fixture via parabolic reflectors inside the unit. It is important to consider that most HPS luminaries emit a yellowish white, low color temperature-rated beam. They are also known for producing low CRI values at roughly 25 CRI. This unit produces 125,000 lumens during light output, while drawing 1,000 watts. Voltage options include 120V, 208V, 240V, or 277V / 220-480 OPT. The HPS lamp is also considerably lighter at 45 lbs., compared to the LED fixture at 70 lbs.

When comparing light produced by the units (mounted 50 feet Above Finished Floor [AFF] with a 45-degree tilt), the LED fixture generates a circular shape with an intensely lit center. The HPS lamp emits an oblong-like beam that is wide and its intensely lit center also takes on a similar, oblong-like shape. Inside the beam, both lights produce up to five foot candles and up to eight foot candles of illuminance for the center. Outside the beam, both units leak around 1-2 foot candles of light, with the LED fixture producing a tighter beam, compared to the HPS lamp.

Hazardous Location Features and Applications

Both lamps are designed for use in hazardous locations. The explosion proof LED fixture comes with Class 1 Division 2 (Groups C and D), Class 2 Division 1/2 (Groups E, F and G) and Class 3 ratings from the National Electric Code (NEC). It supports a copper-free, aluminum alloy body that improves the durability of the fixture when exposed to vibration, rough treatment and impacts. This LED luminary is ideal for paint spray booths, gas stations and petroleum refineries. Mounting options for the light includes the following: pendant, ceiling, wall and cable.

The explosion proof HPS lamp is suitable for hazardous locations associated with Class 1 Division 2 (Groups A, B, C and D) ratings from the NEC. It can also sustain maximum operating temperatures up to 325 degrees Celsius (T1 NEC Identification Number). The housing of the unit consists of pressure cast, copper-free aluminum with a deep bronze Polyester finish, impact-resistant door glass, and high temperature silicone rubber seal. All of these components combined reinforces the weatherproof properties of the fixture. This HPS lamp is suitable for hazardous locations, outdoor environments, industrial locations and marine applications- due to its corrosion resistant features. Mounting options for the luminary includes the following: slip fit pole and zinc-plated yoke.

LEDs vs HPS Lamps

The lighting technologies used in both lamps differ greatly. HPS luminaries rely on high temperatures, an arc tube and a mixture of gases to produce light. With an average lifespan of 24,000+ hours, the fixtures are generally reliable, because they can maintain 90 percent of light output at the midpoint of their intended lifespan. At the end of the unit’s lifespan, it can still generate up to 80 percent output. LEDs utilize tiny diodes to produce intense lighting conditions and support a lifespan of 50,000+ hours. It can handle instant toggling- a feature that HPS lamps do not have. Hence, operators that use HPS fixtures must wait for a short period of time when warming up the lamp from a non-operational state, and when restarting the fixture from an operational state.

LEDs generate very little heat during output and emit light for 180 degrees. On the other hand, HPS fixtures emit light in all angles (360 degrees), requiring manufacturers to install reflectors that direct light beams to the desired target.

From a long-term perspective, LEDs come with almost zero maintenance costs but initial purchasing costs tend to be higher, compared to traditional luminaries. HPS lamps are prone to breakage due to loose components inside the bulb and its strong reliance on ballasts. Because of this, customers using HPS fixtures will need to consider additional investments, such as replacements for expired components and unforeseen labor costs.

Related Categories/Products
Category/Product (click on link below for more information)
Explosion Proof Lights
Articles - EXP
Articles - HAZLOC
C1D1 Explosion Proof Light Fixtures for Laboratories and Clean Rooms
Explosion Proof High Bay LED Fixtures
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