Can fire water directly when the electrical equipment is on fire?
If water is used to extinguish the fire, it will also reduce the insulation performance of the electrical equipment, cause the ground short circuit, or endanger the safety of the nearby fire fighters. Therefore, carbon dioxide, carbon tetrachloride, "1211", dry powder and other extinguishing agents are usually used to extinguish the fire, because these extinguishing agents are non-conductive.
When the electric equipment is on fire, fire water can not be used directly. Because the water usually contains conductive impurities, sprayed on the charged equipment, and then penetrate the equipment dust, impurities, it is easier to conductive.
But after the transformer, oil circuit breaker and other equipment filled with oil, the water can be sprayed into fog to extinguish the fire. Because the water area, covered in flames, small water droplets easily vaporize, the flame temperature decreased rapidly; rising flue gas flow and the suspension of water mist particles landing slowly, more conducive to the vaporization; falling tiny water droplets floating on the surface of the oil, the oil surface temperature reduced, weakening the oil vaporization, so that the flame is extinguished to weaken.
