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![Classification of Hazardous Area & Explosive Atmospheres]( "Classification of Hazardous Area & Explosive Atmospheres")
Classification of Hazardous Area & Explosive AtmospheresClassification of Hazardous Area
Classification of Equipment for Explosive Atmospheres![CNWINNEX Explosion-Proof Air Conditioning: Building a Safety Line for Hazardous Environments]( "CNWINNEX Explosion-Proof Air Conditioning: Building a Safety Line for Hazardous Environments")
CNWINNEX Explosion-Proof Air Conditioning: Building a Safety Line for Hazardous EnvironmentsIn the HVAC industry, industrial cooling systems come with a wide range of technical descriptors. Terms like “dust ignition-proof,” “intrinsically safe,” and “purged” are common—and can sometimes make it difficult to determine what your specific application truly requires. Among these, “explosion-proof” stands out as one of the most critical, yet often misunderstood, characteristics.
So, what does explosion-proof air conditioning actually mean? When is it necessary? And does your facility need it? As a brand specializing in specialty climate control solutions, CNWINNEX is here to provide clear answers and help you understand the core value behind explosion-proof HVAC technology.![CNWINNEX Pressurized Explosion-Proof Cabin]( "CNWINNEX Pressurized Explosion-Proof Cabin")
CNWINNEX Pressurized Explosion-Proof CabinRedefining Active Safety with Global Standards & Intelligent Technology In high-risk industries where explosive atmospheres are a constant threat, CNWINNEX’s Pressurized Explosion-Proof Cabin delivers more than just passive containment. It embodies the highest international certifications and integrates intelligent systems to provide a complete, lifecycle safety solution.![Explosion-proof Unitary Air Conditioner]( "Explosion-proof Unitary Air Conditioner")
Explosion-proof Unitary Air Conditioner1. Explosion-proof unitary air conditioner with high cooling and heating capacity, delivering fast cooling and heating response. It is a highly intelligent air conditioning system.
2. The indoor unit features a frame structure with an LCD display, ultra-quiet design for silent operation, and fully automatic operation.
3. Equipped with fully automatic fault self-diagnosis and automatic on/off settings.
4. Utilizes a brand-name expansion valve as the throttling device, allowing flexible refrigerant flow adjustment based on load demand for more efficient operation.
5. Incorporates high-efficiency inner-grooved copper tubes and hydrophilic fins for superior heat transfer performance.
6. Employs a microprocessor-based automatic control system with fault self-diagnosis capability, ensuring energy-efficient, time-saving, and user-friendly operation.
7. Key refrigeration components are sourced from world-renowned brands to ensure long-term, high-efficiency performance.![Winnex Atex Certified Wall-Mounted Split-Type Explosion-Proof Air Conditioner]( "Winnex Atex Certified Wall-Mounted Split-Type Explosion-Proof Air Conditioner")
Winnex Atex Certified Wall-Mounted Split-Type Explosion-Proof Air ConditionerIn industrial sectors such as oil and gas, chemicals, and pharmaceuticals, safety standards cannot be ambiguous. The Winnex Wall-Mounted Split-Type Explosion-Proof Air Conditioner is engineered from the ground up with deep integration of the international explosion-proof standard system. We firmly believe that true safety stems from precise adherence to every technical specification. The product is designed in strict accordance with the EU ATEX Directive and fully complies with the following core harmonized standards, ensuring every phase from concept to finished product withstands the most rigorous scrutiny![20KW Explosioin Proof Packaged Air Conditioner]( "20KW Explosioin Proof Packaged Air Conditioner")
20KW Explosioin Proof Packaged Air ConditionerIn high-risk flammable and explosive scenarios such as petrochemical engineering, natural gas extraction, military industry laboratories, and hazardous chemical warehousing, explosion-proof reliability and installation convenience of temperature control equipment are critical prerequisites for safe production. The Winnex 20KW ATEX-Certified Explosion-Proof Packaged Air Conditioner has become a benchmark product for temperature control in hazardous environments with its exclusive integrated design and authoritative ATEX explosion-proof certification, providing dual guarantees of "safety + efficiency" for high-risk locations.![Winnex BF Series Evaporative Explosion-proof Air Cooler]( "Winnex BF Series Evaporative Explosion-proof Air Cooler")
Winnex BF Series Evaporative Explosion-proof Air CoolerThe Winnex Air BF Series Evaporative Explosion-proof Air Cooler is engineered for flammable and explosive environments. Integrating cooling, ventilation, air purification, deodorization, and dust removal into a single unit, it delivers powerful cooling through the natural physical principle of water evaporation. Requiring no compressor or refrigerant, it is an economical and eco-friendly ideal choice for hazardous areas such as petroleum, chemical, and pharmaceutical industries.![CNWINNEX 5HP ATEX-certified explosion-proof air conditioner successfully delivered to Dubai, setting a new benchmark for temperature control in high-risk environments worldwide.]( "CNWINNEX 5HP ATEX-certified explosion-proof air conditioner successfully delivered to Dubai, setting a new benchmark for temperature control in high-risk environments worldwide.")
CNWINNEX 5HP ATEX-certified explosion-proof air conditioner successfully delivered to Dubai, setting a new benchmark for temperature control in high-risk environments worldwide.On September 10, 2025, a flight carrying a CNWINNEX 5HP cabinet-type explosion-proof air conditioner successfully took off from Beijing Airport and arrived in Dubai for delivery. This not only marks a significant milestone in CNWINNEX's expansion into the Middle East market, but also sets a new benchmark for safe temperature control in high-risk environments globally with its combination of ATEX international certification, multiple explosion-proof technologies, and comprehensive compliance assurance.
● Classification of Hazardous Area
1. Gas / Vapour Hazardous Areas
Zone 0：Area where explosive gas atmosphere is present continuously, for long periods or frequently
Zone 1：Area where explosive gas atmosphere is likely to occur occasionally in normal operation
Zone 2：Area where explosive gas atmosphere is not likely to occur in normal operation; if present, exists only for a short time
2. Dust Hazardous Areas
Zone 20：Area where explosive dust atmosphere is present continuously, for long periods or frequently
Zone 21：Area where explosive dust atmosphere is likely to occur occasionally in normal operation
Zone 22：Area where explosive dust atmosphere is not likely to occur in normal operation; if present, exists only for a short time
● Classification of Equipment for Explosive Atmospheres
1. Equipment Groups
Group I：Equipment for mines susceptible to firedamp
Group II：Equipment for explosive gas atmospheres other than mines
IIA：Representative gas: Propane
IIB：Representative gas: Ethylene
IIC：Representative gas: Hydrogen, Acetylene, highest risk
Group III：Equipment for explosive dust atmospheres
IIIA：Combustible flyings
IIIB：Non-conductive dust
IIIC：Conductive dust, highest risk
2. Equipment Categories
Category 1：Very high safety, for Zone 0 / 20
Category 2：High safety, for Zone 1 / 21
Category 3：Normal safety, for Zone 2 / 22
3. Equipment Protection Level (EPL)
Gas atmospheres: Ga (Zone 0), Gb (Zone 1), Gc (Zone 2)
Dust atmospheres: Da (Zone 20), Db (Zone 21), Dc (Zone 22)
4. Common Types of Protection
Flameproof enclosure: d
Increased safety: e
Intrinsic safety: i
Pressurized enclosure: p
Oil immersion: o
Sand filling: q
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