The bearing capacity of each load is different. Generally， dry-type transformer should operate under rated capacity， while oil transformer has better load working capacity.
The noise of dry-type transformer is mainly the vibration noise in operation. This vibration noise is caused by multiple positions， including the vibration of magnetic induction electromagnetic coil. All pay great attention to the solution of vibration when carrying out noise control.
MalakiFirst of all， although dry-type transformer has strong moisture resistance，MalakiMaintenance system of oil immersed transformer， 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.
Note: in the whole process of safety patrol inspection， the on-site operation and maintenance management staff must use temperature tester or thermal imager to carry out purposeful inspection on the transformer itself，MalakiAmorphous alloy oil immersed transformer， significantly expanded， or there is local sound， the cause shall be found immediately and certain effective measures shall be taken. If necessary， the load can be reduced or the operation of the transformer can be stopped.
GoniaIn the case of using dry-type transformer， customers must master the method of wiring. If there are problems in wiring， it is easy to cause common faults in application. So， what is the wiring mode of dry-type transformer?
When the whole process of winding wave of oil immersed transformer is calculated by using the marking method， the winding of oil immersed transformer is generally divided into multiple modules， and each module is replaced by an equivalent circuit， and its power circuit includes an inductance and vertical capacitance a capacitance to ground or capacitance between windings， They also have mutual inductors between the inductors of each module， and collect the chain Internet as the equivalent power circuit of oil immersed transformer. The precision of the conclusion can completely meet the needs of practical projects.
The power transformer conductor refers to the connecting transmission line between each electromagnetic coil， between the electromagnetic coil and the group outlet pipe， and between the electromagnetic coil and the tap changer.
Power transformer is an idealized supporting facility transformer for medium cabinet and high-voltage cabinet at the present stage， and can be equipped with safety protective casing according to different waterproof grades. It is applicable to key or unique natural environment sites such as multi-storey buildings， airports， tunnel construction， chemical enterprises and factories.
Transformer inspection nose sniffing method
The insulating layer shaft and the connecting articles between the bell jar and the core shall be removed. If it is a hanging bell inspection， the oil shall be pumped into the bottom of the bell jar before the bell jar can be removed.
investmentWhen the screw of the through core extruder holding the iron core of the transformer is loose， there are screw cap parts left on the iron core， or small metal materials fall into the transformer the transformer will send out & ldquo; Ding Ding Dang & rdquo; Or & ldquo; Call & hellip; Call & hellip& rdquo; Blowing sound and its & ldquo; Squeak， squeak & rdquo; It"s like a magnet sucking a small washer， while the working voltage， current and temperature of the transformer are all normal. Such conditions generally do not endanger all normal operation of the transformer， and can be solved until power failure.
Operation of oil immersed transformer
Noise dispersion of dry-type transformer
Operation of oil immersed transformer
Honest managementSolenoid insulation deterioration
It should be said that after the development trend of these years， the overall level of China"s 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.
When checking the hook core， the insulation of the electromagnetic coil and the porcelain sleeve is usually accidentally damaged. After the shell of the pottery is broken， if you work again， turn on the photo flash when it"s light，Malaki1600KVA dry type transformer size， and it"s short when it"s heavy. Therefore， please pay attention during maintenance. It is not necessary to destroy the insulation. After maintenance， experts can inspect special tools， parts， insulation， the tightening bolts are loose， and the installation and processing process is wrong， so that the bolts are not tightened well， resulting in oil leakage.
