For the leakage that has already occurred， find the leakage point first， which can not be ignored. For the position with serious leakage， shovel or sharp punch can be selected. The leakage point can be riveted with special tools for metal materials. After manipulating the leakage， the treatment surface shall be cleaned and tidy. Polymer composite materials are mostly selected for dry consolidation. After dry consolidation， the goal of long-term treatment of leakage can be achieved.
Fault judgment of power transformer
GaliganjThe transformer manufacturer said that the selection should be based on the application environment of the dry-type transformer. For the extremely extreme environment， the dry-type transformer should be poured with epoxy resin glue. Because this kind of environment does not need to heat the dry-type transformer， it can operate immediately. However， for the general application environment，GaliganjWhat is the price of 1000 KVA transformer， the class H dry-type transformer can be used.
The long-term overload of power transformer will slowly cause the scalding and insulation aging of solenoid coil， resulting in short circuit between coils， two-color short circuit or short circuit on the ground， resulting in the ignition of power transformer. Therefore， the insulation compressive strength of power transformer shall be tested before installation and operation， and overload is not allowed in the whole process of operation.
Xie DezeThe zero line is mainly used in the working circuit. The voltage caused by the zero line is equivalent to the line resistance multiplied by the current of the working circuit. Because of the distance， the voltage caused by the zero line can not be ignored. As a countermeasure to maintain life safety，Galiganj500 kV dry type transformer， it is more and more unreliable. Ground wire (PE): it is not used as a working circuit， but only as a maintenance line. Use the affirmation of the earth & ldquo; ” Voltage. When the machine and equipment casing is electrified， the current will be quickly grounded. Even if there is a lead for the PE line it will be grounded from the surrounding grounding body.
There are many connection groups of dry-type transformers， and the selected structures and connections are also different. Then， what are the groups of dry-type transformers? How to carry out the connection? Or basically introduce it with the network of dry-type transformer manufacturers.
Common problems of tap changer of power transformer
Protective measures for damping of dry-type transformer
Visual inspection method for transformer inspection
(IV) the transformer on the column shall be stable and firm， and the waist rail shall be & phi; mm galvanized wire shall be wound over turns in an even number. The iron wire shall not have a connector and shall be tightened after winding. The distance between the waist rail and the energized part shall not be less than .m.
Professional is kingWhen sampling from a small and medium-sized power transformer without a discharge pipe (or oil sample suspension plate)， it can be in a power transformer such as a glass test tube when it is not in operation to extract the oil sample at the bottom， it is very easy to damage the relay protection inside and outside of dry-type transformer by lightning. If it is a serious situation， it is very easy to cause fire accidents， damage to machinery and equipment， etc.
Connection group structure of dry-type transformer
systemPower transformers are used in all walks of life
Power saving analysis of transformers has always been based on whether the utilization rate of transformer capacity is less than a certain standard value. Whether transformers are environmental protection and energy saving specifications. In fact， sometimes such specifications are not saving electromagnetic energy， but consuming electromagnetic energy.
& ldquo; YN， 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).
GaliganjThe iron core of power transformer is made of high-quality crystallized hot-rolled ferrite core， which is stacked at the degree fully inclined multi-step interface. The surface is covered with epoxy resin adhesive cable sheath coating， which is resistant to corrosion and rust， and the vibration reduction solution is made at the cable bridge.
(IV) the transformer on the column shall be stable and firm， and the waist rail shall be & phi; mm galvanized wire shall be wound over turns in an even number. The iron wire shall not have a connector and shall be tightened after winding. The distance between the waist rail and the energized part shall not be less than .m.