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The Field of Application: In electrical engineering, a hazardous location (sometimes abbreviated to HAZLOC) is defined as a place where concentration of flammable gases, vapors or dusts occur. Electrical equipment that must be installed in such locations is especially designed and tested to ensure it does not initiate an explosion, due to arcing contacts or high surface temperature of equipment.
Gas divisions or zone
In an industrial plant such as a refinery or chemical process plant, handling of large quantities of flammable liquids and gases creates a risk of leaks. In some cases the gas, ignitable vapor or dust is present all the time or for long periods. Other areas would have a dangerous concentration of flammable substances only during process upsets, equipment deterioration between maintenance periods, or during an incident. Refineries and chemical plants are then divided into areas of risk of release of gas, vapor or dust known as divisions or zones.
- Non-Hazardous Area
- An area such as a residence or office would be classed as Non Hazardous (safe area), where the only risk of a release of explosive or flammable gas would be such things as the propellant in an aerosol spray. The only explosive or flammable liquid would be paint and brush cleaner. These are classed as very low risk of causing an explosion and are more of a fire risk (although gas explosions in residential buildings do occur). Non hazardous areas on chemical and other plant are present where it is absolutely certain that the hazardous gas is diluted to a concentration below 25% of its lower flammability limit (or lower explosive limit (LEL)).
- Division 2 or Zone 2 area
- This is a step up from the safe area. In this zone the gas, vapor or mist would only be present under abnormal conditions (most often leaks under abnormal conditions). As a general guide for Zone 2, unwanted substances should only be present under 10 hours/year or 0–0.1% of the time.
- Division 1 or Zone 1 area
- Gas, vapor or mist will be present or expected to be present for long periods of time under normal operating conditions. As a guide for Zone 1, this can be defined as 10–1000 hours/year or 0.1–10% of the time.
- Zone 0 area
- Gas or vapor is present all of the time. An example of this would be the vapor space above the liquid in the top of a tank or drum. The ANSI/NEC classification method consider this environment a Division 1 area. As a guide for Zone 0, this can be defined as over 1000 hours/year or >10% of the time.
Equipment protection level
In recent years also the Equipment Protection Level (EPL) is specified for several kinds of protection. The required Protection level is linked to the intended use in the zones described below:
| Group | Ex Risk | Zone | EPL | Minimum type of protection |
| I (mines) | energized | Ma | ||
| I (mines) | de-energized in presence of Ex atmosphere | Mb | ||
| II (gas) | explosive atmosphere > 1000 hrs/yr | 0 | Ga | ia, ma |
| II (gas) | explosive atmosphere between 1 and 10 hrs/yr | 1 | Gb | ib, mb, px, py, e, o, q, s |
| II (gas) | explosive atmosphere between 1 and 10 hrs/yr | 2 | Gc | n, ic, pz |
| III (dust) | explosive surface > 1000 hrs/yr | 20 | Da | ia |
| III (dust) | explosive surface between 10 and 1000 hrs/yr | 21 | Db | ib |
| III (dust) | explosive surface between 1 and 10 hrs/yr | 22 | Dc | ic |
An explosion-proof lighting fixture is a device used for signaling or lighting in a hazardous location (sometimes abbreviated to HAZLOC), a place where concentrations of flammable gases, vapors, or dusts occur. It is especially designed and tested to ensure it does not initiate an explosion, due to arcing contacts or high surface temperature of equipment.
BC5401 Series Explosion proof Fluorescent Light | |
Model | BC5401-L2x20 |
Lighting Source | LED |
Input Voltage | 100~240VAC |
Rated Voltage | AC110V, AC115V, AC120V, AC127V, AC220V, AC230V, AC240V |
Frequency | 50 / 60Hz |
Rated Power | 2x20W |
Ingress Protection | IP66 |
Anti-Corrosion Grade | WF2 |
Factor | >0.95 |
EX code | Ex II2GD Ex de IIC T6 Gb Ex tb IIIC T80 ℃ Db |
Mounting Angle | 360 ° |
Application | Can be widely used in petroleum, chemical, terminals, ports, aerospace, aviation, military, processing and other places. Harsh environment, moist area. |
BC5401 Series Explosion proof Fluorescent Light
| Power Consumption | 20W |
| EX Code | Ex II2GD Ex de IIC T6 Gb Ex tb IIIC T80 ℃ Db |
| Standard | GB3836.1, GB3836.2, MT221 |
| Input Voltage (V) | AC 100-240 |
| Rated Power (W) | 2x20W |
| Light Source | LED |
| Luminaire Effect (lm/W) | >90 |
| Color Temperature (K) | 5300~6000 |
| Color Rendering Index (Ra) | >70 |
| Service Life (h) | >50000 |
| Frequency | 50/60Hz |
| Protection Degree | IP66 |
| Anti Corrosion Grade | WF2 |
| Factor | >0.95 |
| Total Harmonic current | <15% |
| Housing Highest Surface Temperature ( ℃ ) | <80 |
| Mounting Angle | 360 ° |
* Support parallel connected, no need to use the junction box,support ceiling, pole, wall mounting type.
* Equipped with world brand light source, electrical appliance.
* Products using flameproof increased safety structure, easy to install with separate wiring chamber, meet the latest requirements of explosion proof lighting, safe and reliable operation in explosive hazardous areas.
* Light housing made of aluminum alloy, high strength, stainless steel exposed fasteners not color, not rust, can prevent rain.
Why to use explosion-proof lights?
A household light switch may emit a small, harmless visible spark when switching. In an ordinary atmosphere this arc is of no concern, but if a flammable vapor is present, the arc might start an explosion. Electrical equipment intended for use in a chemical factory or refinery is designed either to contain any explosion within the device, or is designed not to produce sparks with sufficient energy to trigger an explosion.
Many strategies exist for safety in electrical installations. The simplest strategy is to minimize the amount of electrical equipment installed in a hazardous area, either by keeping the equipment out of the area altogether or by making the area less hazardous by process improvements or ventilation with clean air.
MOQ of our explosion proof lights
MOQ: We support sample order.(1~5PCS)
More than 500PCS,can pring Logo on the products.
What is the payment terms?
We accept T/T, L/C, WESTERN UNION, PAYPAL, CASH.
Why choose us?
1. Guarantee of High Quality
Certification of CE, ROHS, CCC, ISO9001
Strict quality controller throughout the production process
Purchase of material
Finished products test and overall check
Reliable checking
2. Customization of Production
We can make the required products according to customer's requirement or drawings
3. Reliable Team
Excellent technical team, waiting for solving your questions.
Paying attention to your requirements and production lead time.
Professional recommendation for you.
Guarantee period for our explosion proof lights
2-Years afer being sold.
How to visit and contact us?
Firstly, you are highly welcomed to visit our factory, we can provide you an invitation letter from Chinese Embassy for you if needed. Besides, we are more pleased to help you to book a flight or hotel to save your time.
Notes
Before placing an order, please kindly confirm us the details or you have any other special requests.
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