The dry-type transformer used for power plant voltage transformation is different from the oil transformer. It is strictly prohibited to lead the way at the bottom voltage side to prevent the transmission overvoltage caused by overvoltage at the power grid side or lightning stroke from penetrating the insulation layer of the dry-type transformer.
6During the operation of the transformer， the resistance value of the grounding wire shall be measured accurately every two years.
uSanta Maria Jesuit ChurchThe no-load impulse closing working voltage shall not exceed % of the working voltage marked on the gear of the transformer， the closing frequency shall be times， the delay time after power receiving shall not be less than min， and the time interval of each closing shall not be less than min.
The specific contents include eliminating the shortcomings found in the patrol inspection， cleaning the porcelain waterproof casing，Products Show removing and replacing the cracked or brittle leather pad，EstolSelection of three-phase dry-type transformerStable and orderly production replenishing the oil with less oil， checking and replacing the silica gel of the breathing mask， the energy-saving distribution transformer Market in China is relatively scattered， coupled with the constraints of factors such as low threshold in the field， uneven companies， lack of evaluation and specifications and inadequate technical innovation， resulting in the slow marketing and promotion of energy-saving transformers.
GvThe appropriate power saving calculation formula should be derived from the following process: active power loss of large capacity transformer: load of large capacity transformer; PDK - short-circuit fault loss of large capacity transformer， kW. Active power loss of small capacity transformer: when a pump room is in normal operation， two pumps are started separately，Products Show so the usual load is KW， CST = . One kva transformer was originally configured
The person in charge of a transformer manufacturer said that because of the hazards of raw materials and other factors， the cost of energy-saving transformers is significantly higher than that of traditional transformers， and the price factor is also a key factor endangering the popularization and marketing promotion of energy-saving transformers. Although there are energy-saving and convenient subsidy projects to help energy-saving transformers， the sales market has not been fully operated.
There is a magnetic induction line crossing in the transformer core， which will cause induced electromotive force on the plan perpendicular to the magnetic induction line. Because this electric flow creates a closed loop to generate an electric field and forms a vortex， it is called vortex. The existence of vortex makes the transformer core hot and consumes kinetic energy. This kind of loss is called vortex loss.
xWhen oil samples are used the safety and fire safety technical specifications on the spot shall be strictly implemented.
TTransformer inspection ear
DQuality inspection reportMaintenance contents of power transformer
mFTransformer inspection ear
There is a magnetic induction line crossing in the transformer core， which will cause induced electromotive force on the plan perpendicular to the magnetic induction line. Because this electric flow creates a closed loop to generate an electric field and forms a vortex， it is called vortex. The existence of vortex makes the transformer core hot and consumes kinetic energy. This kind of loss is called vortex loss.
It should be said that after the development trend of these years， the overall level of Chinas transformer industry at this stage is basically international and the quality level is no different from that of overseas goods& rdquo; The person in charge of the transformer Federation of China Household Appliance Industry Association said.
Welcome to inquirezThe cycle time of power-off cleaning and inspection shall be determined according to the surrounding environment and load conditions，Products Show generally from half a year to once a year;
A& ldquo; of wiring transformer; Enter & rdquo; And & ldquo; Output & rdquo; Use a megger to test the grounding resistance between the terminal and the ground wire. When accurately measured by V megger， the resistance value exceeds m ohm bus.
The common dry-type transformer is an important electrical equipment，EstolSelection of three-phase dry-type transformerStable and orderly production and the voltage is constantly regulated. However， because of certain necessity， the dry-type transformer will also boost voltage， and the whole process of boosting voltage is very complex， and there are many principles.
kSanta Maria Jesuit ChurchRelevant responsible persons of the transformer Federation of China Household Appliance Industry Association show that the development prospect of transformers in China in the future is still the development trend of environmental protection， low noise， fire safety and explosion-proof and high reliability. There are two key development prospects: one is the development trend of high voltage and high voltage， especially kV and kV. The second is the development trend towards environmental protection，Power transformer price: 1000KVA, 33kV, 25kV, power transformer, oil immersed transformer, dry-type transformer factory energy conservation and miniaturization. The former key is applied to the long-distance substation project route， and the latter key is applied to the substation project route in big cities.
qWThe insulation of the through core anchor bolt clamping the iron core is damaged， resulting in a short circuit fault between the silicon steel sheet of the iron core and the through core anchor bolt;
How to maintain dry-type transformer?