When wiring European-style cable joints, cable explosion-proof sealed clamping joints need to consider the specifications and dimensions of the corresponding outlet of explosion-proof equipment, such as whether it is G thread or M thread, whether the length is DN20 6 points or M25*1.5, or whether the explosion-proof equipment has not been drilled.
If you have not drilled holes or purchased explosion-proof glands, you must first communicate with the electrician teacher or technician to determine how large the holes they will drill, usually DN25 DN20 Most of them are M32. Once the holes are drilled, you only need to follow this specification and size to select a cable explosion-proof connector that meets the requirements.
Non-armored cables are matched with non-armored cable glands, which are more convenient to install. You only need to select the correct thread form and whether the installation thread is one inner and one outer, double outer or double inner. Armored cables need to be matched with armored explosion-proof glands, and they need to have an armored cone ring inside, so that the layer of steel wire inside the armored cable can be consolidated and fixed.
With the advancement of industrialization, there are some special occasions in the industrial applications of lightning arrester manufacturers. When dust encounters a heat source (open flame or temperature), the flame instantly spreads throughout the mixed dust space. The chemical reaction speed is extremely fast, and a large amount of heat is released at the same time, which is extremely destructive.
Generally, the dust explosions we come into contact with are mostly in production and processing places where aluminum powder, zinc powder, aluminum processing grinding powder, various plastic powders, wheat flour, sugar, wood chips, dyes, bakelite ash, milk powder, tea powder, tobacco powder, coal dust, plant fiber dust, etc. are produced.
In the workshop, in addition to man-made fire sources, there are also cables. The cause of sparks or high temperatures in metal oxide arrester cables is mostly at the cable joints: the main reason is that the cables in the factory are running at full load or overload, causing overheating at the cable joints, or under natural conditions, the resistance changes at the joints caused by the aging of the tape used, causing changes in the cable joints. There is too much dust in the workshop, causing the accumulation of dirt, leading to serious heating at the joints, which will eventually lead to major safety accidents.
Therefore, it is particularly important to choose a good cable explosion-proof sealing joint and how to install and wire the cable explosion-proof joint.
1. The explosion-proof gland is made of 304 stainless steel, which is resistant to high temperature, salt, acid, alkali and corrosion, and is suitable for a variety of harsh environments.
2. Equipped with clamping sealing ring and tightening claw, which are waterproof, flame-retardant and explosion-proof.
3. It must be qualified as a manufacturer, have the Exd IIC Gb national standard explosion-proof mark engraved on the surface, and have an explosion-proof certificate and 3C test report certified by a third-party authority issued by the manufacturer.
