Fire-proof and explosion-proof of Power transformer

Power transformer is the main distribution power system of electric power equipment.Power transformer is mainly is to reduce the high voltage of the grid can be used directly for the 6000 V or 380 voltage, to supply electrical equipment. Such as transformer overload or short circuit inside, insulating material or insulating oil will decompose due to action of high temperature or electric spark, expansion and gasification, the transformer internal pressure has increased dramatically, may cause transformer shell explosion, a large number of insulating oil jet combustion, flow and will further expand the fire danger. In the operation of the fire explosion should pay attention to:
(1) can't overload operation: overload running for a long time, can cause heating coil, make the insulation aging, cause a short-circuit.
(2) often inspection insulation oil: oil should be regularly test, unqualified oil should be replaced in a timely manner, or take other measures.
(3) to prevent the damage of transformer wire and cable core insulation aging, core heat cause insulation aging for a long time.
(4) to prevent because of careless repair damage insulation, if found abrasion damage, will handle in time.
(5) ensure that wire contact is good, poor contact local overheating.
(6) to prevent lightning, transformer will be destroyed due to breakdown of insulation.
(7) short circuit protection: transformer coil short circuit or load, if protection system failure or protection fixed value is too large, could burn down transformer.To install and reliable for this short circuit protection.
(8) to protect good grounding.
(9) ventilation and cooling: if the transformer coil wire is A level of insulation, the insulation is given priority to with paper and cotton yarn.Temperature rise every 8 ℃ half to reduce its insulation life;Transformer normal running temperature below 90 ℃, about 20 years of life;If the temperature to 105 ℃, the life expectancy for 7 years.Transformer operation, to maintain good ventilation and cooling.