防爆燈與一般燈的差別

防爆照明燈具是具有防爆功能設計的一類燈具, 標有一個 “前任” 象徵. 這些固定裝置在其結構中具有特定的密封性能和額外的保護措施, 按國家標準規定. 與非防爆燈不同, 他們遵守幾個獨特的要求:

1. 防爆類別, 年級, and Temperature Group: These are defined by national standards.

2. Types of Explosion-proof Protection:

There are five main types – 隔爆型, 提高安全性, 正壓, 無火花, and dust explosion-proof. They can also be a combination of these types or be of a composite or special kind.

3. Electric Shock Protection:

Classified into three categories – I, 二, 和三. The purpose is to prevent electric shocks from accessible parts or conductors at different potentials, which might ignite 霹靂 混合物.

Ⅰ型: Based on basic insulation, conductive parts that are normally non-live and accessible are connected to a protective earth conductor in the fixed wiring.

II型: Uses double or reinforced insulation as safety measures, without 接地.

Ⅲ型: Operates on a safe voltage not exceeding 50V and doesn’t produce higher voltages.

類型 0: Relies solely on basic insulation for protection.

Most explosion-proof lighting fixtures fall under Type I, with a few being Type II or III, such as all-plastic explosion-proof lights or explosion-proof flashlights.

4. 外殼保護水平:

Various protection methods for the enclosure are used to prevent the ingress of dust, solid objects, 和水, which could lead to sparking, short-circuiting, or compromising the electrical insulation. Characterized by “智慧財產” followed by two digits, the first digit represents protection against contact, 固體, or dust (範圍從 0-6), 第二次反對水 (範圍從 0-8). As sealed fixtures, explosion-proof lights have at least a level 4 dust protection.

5. Material of Mounting Surface:

Indoor explosion-proof lights might be mounted on ordinary combustible surfaces like wooden walls and ceilings. These surfaces must not exceed a safe 溫度 due to the light fixtures.

Based on whether they can be mounted directly on ordinary combustible materials, they are categorized into two types.

Summary – “How are explosion-proof lights different from regular lights?”: Regular lights are used in non-hazardous locations without 易燃的 氣體或灰塵. Unlike explosion-proof lights, they lack explosion-proof grades and types. Regular lights mainly serve illumination purposes, while explosion-proof lights not only provide illumination but also offer explosion protection, ensuring the safety of personnel and preventing property damage.