The scientific research of power transformer oil is generally carried out according to the way of sampling. What are the common sampling methods and processes?When the full load test is carried out and everything is normal, the load can be connected.Kavana,Automatic system of centrifugal fan: measure the temperature data signal according to the PT thermistor temperature measuring resistor of the embedded parts at the hot part of the bottom pressure winding. The transformer load expands and the operating temperature increases. When the winding temperature reaches ℃, the system software will automatically terminate the centrifugal fan.Brief introduction of zero line of power transformerGizan,KavanaTransformer and box type substation,KavanaPicture of oil immersed transformer disassembly,Protective measures for damping of dry-type transformerTherefore, in the operation prevention and regulation of relay protection dry-type transformer, it is necessary to find the short-circuit fault point according to the fault situation, lock the fault point and analyze the short-circuit fault types of relay protection dry-type transformer. At the same time, if all fields are clear, disconnect the switching power supply at the fault point, the maintenance work of employees will be carried out smoothly, and the harm will not expand to a greater extent.Method and process of taking oil sample of power transformer

Brief introduction of zero line of power transformerThe equipment can eliminate the shortcomings found in the patrol inspection, clean the porcelain waterproof casing casing, remove and replace the cracked or brittle leather pad, check and tighten the node, replenish the oil with less oil, check and replace the silica gel of the breathing mask, etc.When the full load test is carried out and everything is normal, the load can be connected.Product range,The long-term overload of power transformer will slowly cause the scalding and insulation aging of solenoid coil, resulting in short circuit between coils,KavanaProtection of oil immersed transformer, two-color short circuit or short circuit on the ground, resulting in the ignition of power transformer. Therefore, the insulation compressive strength of power transformer shall be tested before installation and operation, and overload is not allowed in the whole process of operation.Oil leakage at electric welding positionHigh voltage fuse of transformer breaks one phase;

Brief introduction of zero line of power transformerQuality recommendation,Power transformer manufacturerDuring the operation of the transformer, the resistance value of the grounding wire shall be measured accurately every two years.When sampling in bulk gasoline barrels, samples shall be selected according to % of the number of gasoline barrels, but not less than barrels. When sampling in batches of small and medium-sized pails or bottles, samples shall be taken according to % of the total number of barrels (bottles).Kavana,According to the condition of cracks galvanized iron wire can be punched into the leakage or riveted with hammer. Then clean the leakage point with toluene and seal it with raw materials. Coated sand casting eyes can be sealed with raw materials immediately.In relay protection dry-type transformer, the disconnection of the fault point is related to each other. In a word, it will affect the whole power circuitDifference between dry-type transformer and oil immersed transformer: