Razlika med protieksplozijsko varnimi lučmi in navadnimi lučmi

Svetlobna telesa, odporna proti eksploziji, so kategorija luči, zasnovanih s protieksplozijsko zaščito, označeno z an “npr” simbol. Te napeljave imajo specifične tesnilne lastnosti in dodatne zaščitne ukrepe v svoji strukturi, kot zahtevajo nacionalni standardi. Za razliko od neeksplozijsko varnih luči, izpolnjujejo več edinstvenih zahtev:

1. Eksplozijsko varna kategorija, Ocena, and Temperature Group: These are defined by national standards.

2. Types of Explosion-proof Protection:

There are five main types – ognjevarno, povečana varnost, pozitivni pritisk, neiskreče, and dust explosion-proof. They can also be a combination of these types or be of a composite or special kind.

3. Zaščita pred električnim udarom:

Classified into three categories – I, II, in III. The purpose is to prevent electric shocks from accessible parts or conductors at different potentials, which might ignite eksplozivno mešanice.

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

Tip II: Uses double or reinforced insulation as safety measures, without ozemljitev.

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

Vrsta 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. Stopnja zaščite ohišja:

Various protection methods for the enclosure are used to prevent the ingress of dust, solid objects, in vodo, which could lead to sparking, short-circuiting, or compromising the electrical insulation. Characterized by “IP” followed by two digits, the first digit represents protection against contact, trdne snovi, or dust (v območju od 0-6), drugi pa proti vodi (v območju od 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 temperatura 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 vnetljiv plini ali prah. 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.