Hello.
When electrical equipment catches fire, you must immediately cut off the power supply to the affected equipment and then extinguish the fire. Dry powder, carbon dioxide type fire extinguishers and 1211 extinguishers should be used to extinguish fires on equipment, generators, engines, etc. potentially under tension. Dry powder extinguishers and 1211 extinguishers can be used for oil switches and transformers (with isolated power supply). dry sand can be used to put out fires as a last resort.
If you have any questions, don't hesitate to ask.
Why can't you use a foam extinguisher to put out a fire when a generator catches fire?
When a generator catches fire, you can't use it. a foam extinguisherto put out a fire.
Do not use a foam fire extinguisher becauseit conducts electricity. If the equipment power is less than 150 MW, hydrogen cooling and air cooling are recommended. If it is 150MW, it is recommended to use water cooling. Water cooling is an independent circuit and has no direct contact with the windings and iron core. It is ducted and the windings and iron core can be cooled externally. When using this type of product, be sure to use it in an area 5 meters from burning objects to ensure personal safety. Of course, if it is a shorter range extinguisher, it can be used in an area of 2. meters. However, when using it, it is best to determine it according to the actual situation on site, so that our personal safety can be guaranteed to the greatest extent.
The fire extinguishing method that can be used after the generator has startedis fire is (water fog). This is a matter of reviewing hazardous chemicals. Many people don't understand why water can put out fires. In fact, the answer to this question is very vague. Let me briefly talk about water mist fire extinguishing: the full name is water mist fire extinguishing system. Water mist fire extinguishing has three characteristics. The first is energy saving and environmental protection, and the second is electrical insulation (the droplet size of the fine water mist is small, and the water is discontinuous during spraying, so that the electrical insulation performance is relatively good Spraying with points Fine water mist tests have shown that fine water mist has good electrical insulation properties. the ministry's Tianjin firesre of Public Security commissioned Tianjin Electric Power Research Institute to carry out AC withstand voltage performance test. fog beam sprayed by water mist nozzle. The results show that: No power frequency AC flashover occurs under the three voltage levels of 220KV, 110KV and 35KV.) The third is the smoke elimination effect.
A fine mist of water can be used to light generators due to its good insulation. The main component of foam fire extinguishers is acid and alkaline liquid, which is a conductive substance. Of course, it is not allowed to use conductive fire extinguishers to extinguish real fires.