When sampling in bulk 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).
Wine cellarOvertemperature alarm and trip: collect winding or iron core temperature data signals according to the temperature measurement resistor of PTC discrete system thermistor embedded in the bottom voltage winding. When the transformer winding temperature rises again， if it reaches ℃， the system software outputs the overtemperature alarm system; If the temperature rises to ℃ again and the transformer can no longer operate， the overtemperature trip data signal must be transported to the secondary maintenance circuit， and the transformer shall be tripped quickly.
High voltage fuse of transformer breaks one phase;
New GuineaSeal oil leakage
Oil leakage of porcelain pot and laminated glass oil level gauge
If the above provisions are not met， the problem of dryness shall be solved. Generally， it is OK to operate the centrifugal fan for a period of time. Check the cleanliness of the power transformer. If too much dust is found， it must be eliminated to ensure indoor ventilation and avoid insulation penetration. In particular， pay attention to cleaning the insulators of the power transformer and the top and bottom ends of winding resistance installation. Portable centrifugal fan or dry air compression or N shall be used to clean the dust in indoor space that is not easy to reach such as ventilation duct， and there shall be no dirt.
Power transformers are also used for testing， which are called test power transformers. They can be divided into inflatable， oil transformer， dry test and other test power transformers. They are the basic test equipment for communication AC compression test for many consumers such as power stations， power supply bureaus and scientific research institutions. According to the specifications of the Bureau of quality supervision， It is used to carry out insulation compressive strength test under required current for various electrical products， electrical components and insulating raw materials.
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 automatically starts the centrifugal fan for refrigeration; When the winding temperature is as low as ℃， the system software will automatically terminate the centrifugal fan.
The main reason is that the welding quality of electric welding is poor， there are empty welding，Wine cellarDry type transformer setting requirements， open welding， needle holes， sand holes and other shortcomings in welding. The oil transformer is easy to be covered with welding powder and paint when leaving the factory， and the potential safety hazards are exposed after operation. In addition， the electromagnetic induction vibration will crack the electric welding and lead to leakage.
Welcome to inquireWhen 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).
If you want to check the activated carbon fiber for the hanging cover， first take out the low-voltage waterproof sleeve and the on load transformer power switch then lower the bell cover anchor bolt of the large cover， slowly hang the galvanized steel wire rope with sufficient lifting net weight on the commonly used earrings， wear round steel from top to bottom in the surrounding screw holes and count the spacing and specifications for easy reinstallation. At the same time， the cable wind shall be added on all sides to ensure that the core international body will not be damaged during the whole lifting process. After lifting for mm， stop the lifting， stabilize the bell cover， and check the bearing capacity of the lifting core， lift it again until the bell cover exceeds the relative height of the body， and rotate the crane to place the bell cover on the clean skid.
Solenoid insulation deterioration
When using the oil sample of the power transformer in operation， it is necessary to add some oil from the oil gate valve at the lower part of the oil tank or the sampling gate valve to release about kg of waste liquid stored at the bottom to clean the oil inlet， and then take the oil sample.
Where can I find it?Causes of fire in power transformer
In order to promote the use of energy-saving transformers， the Ministry of finance， the Ministry of industry and information technology and the national development and Reform Commission jointly promulgated the detailed rules for the implementation of energy-saving distribution transformers of energy-saving products benefiting the people project as early as ， providing subsidies of - yuan / KVA for energy-saving transformers.
In the case of dry-type transformer operation， there is more noise， and some even cause noise， which seriously endangers everyone"s no problem rest time and work. At this time， the dry-type transformer needs sound insulation treatment. There are many processes and key methods to deal with the noise of the common dry-type transformer. How should the noise of the dry-type transformer be solved? Or with the dry-type transformer manufacturer"s network editor to simply understand it.
Wine cellarPower transformer plant
kV and above & plusmn; No load of rated voltage; Part of the circuit breaker of the tap power switch is installed in the phenolic resin insulating paper cylinder，Wine cellarDry type transformer sample，Wine cellarRecycling power transformer manufacturer， the calculation of data in the whole process of oil immersed transformer wave has long had results. Only effective selection of calculation entity models and methods is needed， the accuracy of calculation conclusions can meet the needs of architectural design， and scientific and reasonable data method is selected， Not only can the current distribution of the oil immersed transformer be clearly defined in the development stage， but also the winding and other structures of the oil immersed transformer can be effectively arranged and distributed in a certain scope， which greatly facilitates the design scheme of the oil immersed transformer and ensures the stability of operation.
