In order to better carry out the experiment of power transformer oil it is necessary to sample the power transformer oil. The sampling work should be carried out on a dry sunny day. The commonly used containers and sampling methods during sampling do immediate harm to whether the specific quality of the oil can be truly reflected. The oil sample for AC voltage withstand test shall not be less than .kg， and the oil sample for simplified experiment shall not be less than kg.
& ldquo; YN，Shi bangerTransformer power transmission， D & rdquo; in which indicates that when the working voltage phasor of the primary side line， as the minute hand， refers to the position at o"clock， the phase voltage phasor of the secondary side is at o"clock. That is， the phase voltage UAB of the secondary side lags degrees behind the working voltage uab of the primary side line (or degrees ahead).
Shi bangerTransformer is
Avoid aging and damage of power transformer iron core insulation: aging of iron core insulation or damage of waterproof sleeve holding anchor bolt will cause large vortex of iron core，Shi bangerWhat is the price of 2000kVA transformer， and long-term scalding of iron core will lead to insulation aging.
KeynesIf the volume of power transformer is too small， the rated capacity of the transformer should be selected according to the power consumption， which is not suitable for too large or too small.
The heat discharge pipe of heat pipe radiator is generally made of slotted seamless steel pipe after flattening by stamping die. When the heat discharge pipe is bent and welded by electric welding， oil leakage is often caused. This is due to the supporting force on the surface of the pipe and the working pressure on the inner cavity when stamping the heat discharge pipe.
Avoid inadvertent damage of insulation during maintenance: when repairing the hanging core of power transformer， special attention shall be paid to the maintenance of solenoid coil or insulating waterproof sleeve. If there is scratch damage， it shall be handled properly.
When the manufacturer of the power transformer samples from the automobile oil tank， after opening the sealing cover， use the cleaned and dried rubber stopper to the oil. At the same time，Shi banger160KV oil immersed transformer， clamp the branch pipe with your thumb， and loosen your thumb to make the oil enter the pipe，
The transformer manufacturer will introduce the efficiency of the transformer to you
Careless maintenance and insulation damage
discountHow much is the power transformer
When the manufacturer of the power transformer samples from the automobile oil tank， after opening the sealing cover， use the cleaned and dried rubber stopper to the oil. At the same time， clamp the branch pipe with your thumb， and loosen your thumb to make the oil enter the pipe，
The vibration reduction solution of cable bridge is to modify the hard connection between bus bridge and dry-type transformer， and the vibration reduction solution is made at the cable bridge.
Analysis of common faults of oil immersed transformer:
Focus on DevelopmentCaused by sand holes and cracks. For crack leakage， drilling stop hole is a good way to remove in-situ stress and prevent widening.
After the power transformer has been used for a long time， common faults of iron core will occur. Don"t worry. Contact the transformer manufacturer， and the manufacturer will assign professional technicians for inspection. The main reasons are as follows:
Generally speaking， the ignition emergency treatment method of oil immersed transformer is mainly to disconnect the oil immersed transformer， disconnect the switching power supply on each side， quickly invest the reserved oil immersed transformer and start the power supply system from scratch. Stop the operation of refrigeration equipment. Key oil immersed transformer ignition. When L-type oil immersed transformer and high voltage station oil immersed transformer are ignited， the generator set must be disassembled first.
Shi bangerThe insulation distance between the winding and the iron yoke of power transformer is much larger than that between the windings， because the electric field between the winding and the iron yoke is far away and not as symmetrical as that between the windings. In the electric field in the middle of the winding， most of the cables are in phase with the insulating cylinder (plate) in the middle of the winding， that is， the disconnection component of the electric field is small.
Plug in the power with full load first， observe and detect that the input and output voltage meets the regulations. At the same time， check whether the equipment has abnormal sound， ignition