The iron loss of transformer includes two levels. The first is the hysteresis loss introduced by the transformer manufacturer. When the AC circuit is based on the transformer， according to the magnetic induction line of the transformer ferrite core， which promotes the internal molecular structure of the ferrite core to rub against each other releases energy， and then loses part of electromagnetic energy， which is the hysteresis loss. The other is the vortex loss when the transformer is working.
7Automatic 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 ℃，Product display the system software will automatically terminate the centrifugal fan.
kBrentalUnder normal conditions，KadanTransformer reverse power transmissionProduct Library and immediately communicate and contact with the on-site project staff in case of any problems， so as to ensure the reliable and stable operation of machinery and equipment.
What is the cause of power transformer core failure?
ZTiznetProtection mode for type selection of dry-type test transformer
KzPrinciple of step-up dry-type transformer: the step-up dry-type transformer is a component that correspondingly converts low communication AC voltage， large current flow and small characteristic impedance into high communication AC voltage small current and large characteristic impedance. When there is an AC circuit in the original coil， the communication AC magnetic flux will be caused in the transformer core (or magnetic core)， causing the magnetic induction voltage in the primary coil (or current).
Power saving analysis of transformer
Overtemperature 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.
uWhen using the oil sample of the power transformer in operation，Product display 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.
ZWhat is the cause of power transformer core failure?
Daverage methodThe step-up dry-type transformer refers to the instantaneous operation of voltage. At this stage， there are few manufacturers of dry-type transformer that can reasonably guarantee the instantaneous step-up in China. The step-up dry-type transformer has strong step-up capacity and good practical effect. The difference depends on that the transformer power switch without excitation regulator does not have the ability to change gear with load. Because this kind of tap power switch can cut off the whole process in a short time during the whole process of gear change， cutting off the load current will cause arc burning between circuit breakers， tap power on and off or short circuit fault， so the dry-type transformer shall be powered off during regulation. Therefore， it is generally used as a dry-type transformer that is not very strict in voltage regulation and does not need to be adjusted frequently.
zHThis is the example of power consumption engineering as power saving. The key reason is that the habitual calculation method ignores the copper loss.
Transformer inspection nose sniffing method
If the input of dry-type transformer is an alternating switching power supply， its output voltage is directly proportional to the coil turn ratio of the output input solenoid coil. If a rechargeable battery is used， because it is DC， add a circuit in the input power supply circuit to change it into a continuously changing voltage. In that way，Product display the alternating DC current can be obtained at the output end.
Job descriptiontVisual inspection method for transformer inspection
ZThe scientific research of power transformer oil is generally carried out according to the way of sampling. What are the common sampling methods and processes?
The common dry-type transformer is an important electrical equipment， and the voltage is constantly regulated. However，KadanTransformer reverse power transmissionProduct Library 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.
oBrentalThe efficiency of transformer is closely related to the output power level of transformer. Generally， the greater the output power， the smaller the loss to output power ratio and the higher the efficiency. On the contrary， the smaller the output power， the lower the efficiency.
sRSlow promotion of domestic transformer Market
Relevant 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，Power transformer price: 1000KVA, 33kV power transformer, 25kV power transformer, power transformer, oil immersed transformer, dry-type transformer factory 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， 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.