Can carbon dioxide fire extinguishers be used in high-voltage switchgear rooms?
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1. A few days ago, an expert pointed out that carbon dioxide fire extinguishers should not be installed in high-voltage distribution rooms, as their use can lead to insulation breakdown. 2. During another inspection, another expert noted that there were no carbon dioxide fire extinguishers available in the high-voltage distribution room. Based on the different opinions of these two experts, we would also appreciate it if fellow sailors could provide their professional insights on what the appropriate course of action should be
In accordance with GB 50140-2005 Code for Design of Fire Extinguisher Installation in Buildings, Section 4.2 Selection of Fire Extinguisher Types, 4.2.5 For areas with Class E fires (fires involving electrical equipment), ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, halon fire extinguishers, or carbon dioxide fire extinguishers should be used; however, carbon dioxide fire extinguishers equipped with metal nozzles shall not be used.
Live electricity can certainly cause breakdowns; in the event of an electrical fire, it’s necessary to cut off the power first, and pay attention to maintaining a safe distance
Dry powder and carbon dioxide are the best.
Carbon dioxide fire extinguishers are suitable for extinguishing incipient fires in electrical equipment with voltages below 600V; high-voltage systems, with voltages around 10KV, do not require the use of carbon dioxide fire extinguishers
Carbon dioxide fire extinguishers are suitable for extinguishing incipient fires in electrical equipment with voltages below 600V; high-voltage systems, with voltages around 10KV, do not require the use of carbon dioxide fire extinguishers
My dear friend, regarding the 600-volt voltage in the case of initial fires, are there any relevant regulations? If so, it would be a very professional argument
Carbon dioxide fire extinguishers can be used to extinguish fires up to 600V; dry powder extinguishers should be able to handle fires up to 50,000V
I haven’t seen the specific source for this information, but it is stated in books on safety engineering as well as on 360 Baike. Carbon dioxide fire extinguishers are suitable for extinguishing electrical fires at voltages below 600V in their early stages. From practical experience, it can be seen that carbon dioxide fire extinguishers have a short range, of about 2 meters only. Moreover, due to the rapid cooling effect caused by the vaporization of carbon dioxide when using these extinguishers, even insulated gloves don’t help much. It seems that carbon dioxide fire extinguishers are more appropriate for use in cases of fires involving precision instruments
Carbon dioxide fire extinguishers are suitable for extinguishing fires involving flammable liquids, flammable gases, and Class B electrical fires with a voltage of 600V or less. They are also appropriate for use in areas such as instruments and equipment, as well as books and archives, where it is necessary to avoid leaving residues or damaging the protected items. However, they are not suitable for extinguishing solid material fires, metal fires, or fires involving compounds that contain their own oxygen source. When using them to extinguish electrical fires with a voltage higher than 600V, the power supply must be cut off first. The operating temperature range for carbon dioxide fire extinguishers is -10°C to 55°C.
It is best not to use it; voltages above 600V may cause the conductive path to be broken down, leading to other damages. Other gas fire extinguishing systems can be used instead