The 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， 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.
Some are tied with plastic tape， and some immediately press the two edges together， because the socket can not be pressed firmly during installation， and there is still oil leakage without sealing effect.
RozhniavaThe transformer manufacturer shall not use hand touch method to detect energized high-voltage equipment， such as transformer in operation and neutral grounding equipment of arc suppression coil. For the equipment without power supply and whose shell is reliable grounding device， the temperature or temperature rise must be tested by hand. The secondary equipment can be inspected by hand touch method when it is hot and vibrated.
The flange surface is uneven， 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.
Tomashuv in mazovseh regionOutdoor sampling shall be carried out in sunny days or dry weather with low environmental humidity. During sampling，RozhniavaIsolation transformer power supply， it is necessary to resolutely prevent the invasion of dirt such as rain， wind and sand.
Equipped with a temperature controller， platinum thermistor (pt) is placed beside the embedded hole on the top of the low-voltage solenoid coil to test the winding resistance temperature rise of the transformer， stop the cooling centrifugal fan， set up common problem alarm， overtemperature alarm and overtemperature tripping effect， so as to test the safety performance of the transformer operation.
When we apply oil immersed transformer， we all know that it works with the help of oil. What if the oil immersed transformer is on fire? What countermeasures should we do?
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.
How is the quality level of dry-type transformer compared with foreign countries?
When the full load test is carried out and everything is normal， the load can be connected.
Quality improvementThe electromagnetic coil is wound with copper power wire or foil and lifted with glass fiber. The epoxy adhesive does not need filling. The vacuum drying equipment is used for degassing and dehumidification. The overall concrete is poured with high fracture toughness， resistance to short-circuit faults，RozhniavaS13 technical parameters of oil immersed transformer， common faults and impact. The work is diligent.
Analysis of common faults of oil immersed transformer:
Dry type transformer oscillation is solved by applying vibration damping platform to dry-type transformer and carrying out low-frequency vibration reduction management， which can control the oscillation below .%， and then reduce the building structure noise transmitted by dry-type transformer oscillation.
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，RozhniavaWhich is a good oil immersed test transformer， 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.
High quality and low priceOil leakage of cast iron parts
The transformer manufacturer shall not use hand touch method to detect energized high-voltage equipment， such as transformer in operation and neutral grounding equipment of arc suppression coil. For the equipment without power supply and whose shell is reliable grounding device， the temperature or temperature rise must be tested by hand. The secondary equipment can be inspected by hand touch method when it is hot and vibrated.
In specific daily life， oil immersed transformers are released outward in the form of waves. This kind of wave is like a tide. It is also a kind of kinetic energy. In fact， the wave height of oil immersed transformer also shows the size of kinetic energy. Generally， computer automatic system is used to control the wavelength and frequency of electromagnetic wave. The longer the light wavelength is， the greater the output power is. On the contrary， it is very small.
RozhniavaConnection group structure of dry-type transformer
A zero line of the power transformer is connected with the working equipment. Since the voltage formed by the server during operation will be sent to the power transformer along with the cable， the power transformer will be transported and sent to the power consuming machines and equipment. What is the zero line of the actual power transformer? Let"s introduce it to us.
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 goal of long-term treatment of leakage can be achieved.
