Principle 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
Principle of step-up dry-type transformer: the step-up dry-type transformer is a component that correspondingly converts low 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).
7Transformer inspection nose sniffing method
iRoznov podNoise pollution control and prevention measures of dry-type transformer
Accurately measure the resistance of each phase winding and carry out the measurement. If there is a great difference， it is a common fault of the winding. Then carry out the appearance inspection of the iron core， and then accurately measure the inter chip insulation resistor by AC voltage and galvanometer method. If the damage is not large，power transformer price 1000kva paint the damaged part.
UBuznicaThere is a magnetic induction line crossing in the transformer core，Veron Transformer variable frequency power supplyMaintenance analysis 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.
KsDry type transformer， a static electrical equipment， is used to change the AC current (current) of a certain standard value into another or several types of working voltage (current) with the same frequency and different standard values. According to the supervision sampling inspection data released by AQSIQ in the third quarter of last year， kinds of commodities were found to be inconsistent with the provisions of relevant specifications， with a compliance rate of %& ldquo; This result mostly shows the quality level of Chinas dry-type transformer industry at the present stage.
Precautions for trial operation of power transformer manufacturers
Transformer is a kind of power engineering equipment that converts working voltage and current according to the basic law of magnetic effect of current. In the whole process of power transmission and transformation of power engineering， it is necessary to carry out voltage transformation and blood pressure reduction according to the transformer to reduce the loss in the whole process of electromagnetic energy transmission. Therefore， the power consumption of the processing plant is all connected with kV switching power supply， which is converted into bottom voltage electromagnetic energy through transformer.
uFrom the appearance，power transformer price 1000kva the packaging types are different. The transformer core and electromagnetic coil can be seen immediately for dry-type transformer， and only the shell can be seen for oil immersed transformer;
HThis is the example of power consumption engineering as power saving. The key reason is that the habitual calculation method ignores the copper loss.
BHonesty is the foundationTwo point grounding device of iron core caused by residual welding scar;
qJAt rated power， i.e. & ETA; Is the efficiency of the transformer; P is the input power and P is the output power.
The 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， and each pump is driven by kW motor， so the usual load is KW， CST = . One kva transformer was originally configured
Transformer manufacturers generally adopt IP protective casing， which can avoid the entry of solid dirt with a diameter of more than mm， rats， snakes，power transformer price 1000kva cats， birds and other animals，Veron Transformer variable frequency power supplyMaintenance analysis resulting in vicious common faults such as short-circuit fault and power failure， and provide a safe natural barrier for the energized part. If the transformer equipment must be outdoors， IP protective casing can be adopted， which can avoid being equally divided with the above IP protective effects However， IP casing will reduce the refrigeration capacity of the transformer， so pay attention to the reduction of its operating volume.
device managementeThe 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， its orientation and size change，Power transformer price: 1000KVA, 33kV power transformer, 25kV power transformer, power transformer, oil immersed transformer, dry-type transformer factory 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.
WOil leakage at electric welding position
How to make up oil for oil immersed transformer?
lRoznov podThe common dry-type transformer is an important electrical equipment， 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.
vUThe insulation between silicon steel sheets is damaged， resulting in overheating and melting of the iron core;
First of all， although dry-type transformer has strong moisture resistance， it is generally open structure or very susceptible to moisture， especially the insulation level of dry-type transformer manufactured in China is low (lower flame retardant grade) Therefore， the dry-type transformer can obtain high stability only when the air humidity is below %. The dry-type transformer shall also be prevented from stopping operation for a long time to prevent serious damp. When the grounding resistance value is less than / V (operating voltage)， it indicates that the transformer is seriously damp， and the trial operation shall be terminated.