The electrical standards for explosion-proof boxes (Junction boxes) mainly include the following aspects:
Wire selection: Within the explosion hazard level, the power supply line should use aluminum core wires or cables with a cross-section of more than 4mm². Lighting circuits can use a cross-section of 2.5mm².
Explosion-proof type: Flameproof electrical equipment achieves explosion-proof safety through a flameproof enclosure. The corresponding international standard defines this explosion-proof type as "flameproof enclosure d".
Explosion-proof junction box: The explosion-proof junction box is used for line transition connection in explosion-hazardous places. It is usually equipped with terminal blocks and grounding bolts (nails) inside. The box is equipped with a cable entry device, which is divided into a cable entry integrated with the box.
Please note that these standards are based on specific conditions and application scenarios. When implementing them, detailed design should be carried out according to actual conditions and relevant national or international regulations.
At the same time, when purchasing explosion-proof boxes, we should also pay attention to the following safety standards and related factors:
Explosion-proof mark: Make sure there is a clear explosion-proof mark on the explosion-proof box, including the explosion-proof type (such as flameproof type, increased safety type, etc.) and the applicable explosive gas or steam group (such as Class I, II).
Explosion-proof level: Select the appropriate explosion-proof level according to the degree of danger of the use environment. Common explosion-proof levels include:
Ex d: Flameproof type
Ex e: Increased safety type
Ex p: Positive pressure type
Ex t: Dust explosion-proof type
Material and structure: The material of the explosion-proof box should have good corrosion resistance and mechanical strength. Common materials include aluminum alloy, stainless steel, etc. The structural design should comply with relevant standards to ensure that no rupture occurs in the event of an explosion.
Sealing performance: The explosion-proof box should have good sealing performance to prevent external gas or liquid from entering and ensure the safety of internal equipment.
Temperature level: Select a suitable temperature level to ensure that the explosion-proof box will not cause an explosion due to excessive temperature during operation. Common temperature levels are T1 to T6, with T6 being the highest.
Certification and compliance: Make sure the explosion-proof box complies with national and international standards, such as IECEx, ATEX and other certifications, to ensure its safety in specific environments.
Installation and maintenance: Understand the installation requirements and maintenance guidelines of the explosion-proof box, and ensure that relevant safety operating procedures are followed during use.
Environmental adaptability: Select a suitable explosion-proof box according to the special requirements of the use environment (such as humidity, temperature, corrosiveness, etc.).
When purchasing an explosion-proof box, it is recommended to consult a professional or supplier to ensure that the selected product meets the safety standards and requirements of the specific application.
We at HYDGET have many years of production and business experience in the domestic and overseas markets. We have professional personnel to solve customers' problems at any time.
Welcome to contact us
Contact: Ricky Li
Whatsapp: +86 152 5199 6760
Wechat: +86 152 5199 6760
Email: rickyli@hydget.com
