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，
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.
BanachangHow is the quality level of dry-type transformer compared with foreign countries?
For no-load impulse closing of transformer， pay attention to the following matters:
MganduIn order to better reduce the probability of short-circuit fault of relay protection dry-type transformer， prevention and key are & ldquo; Prevention and Manipulation & rdquo; Is dominant.
The key reason for oil leakage is that there are defects in cast iron parts
After tightening the loose bolts， seal the flange， and solve the bolts that are likely to leak so as to achieve the goal of complete treatment. Tighten the loose bolts strictly according to the actual operation and processing technology.
The cross-sectional wiring of transformer input and output power plugs shall comply with the provisions of their current size; It should be equipped according to the current intensity of -A / Min.
Precautions for trial operation of power transformer manufacturers
Oil immersed transformer operation
Scheme customizationThe representative mode of connection group of dry-type transformer is: English capital letters indicate the wiring on the primary side (or primary side)， and English letters indicate the wiring on the secondary side (or secondary side). Y (or y) is star wiring， and D (or D) is triangular wiring.
If you want to check the activated carbon fiber for the hanging cover first take out the low-voltage waterproof sleeve and the on load transformer power switch， then lower the bell cover anchor bolt of the large cover， slowly hang the galvanized steel wire rope with sufficient lifting net weight on the commonly used earrings wear round steel from top to bottom in the surrounding screw holes， and count the spacing and specifications for easy reinstallation. At the same time， stop the lifting， stabilize the bell cover， and check the bearing capacity of the lifting core， center of gravity and Jack. After everything is normal， and rotate the crane to place the bell cover on the clean skid.
In specific daily life， we have a certain understanding of the optical wavelength of oil immersed transformer. What kind of function does it have for transformer?
When oil samples are used， the safety and fire safety technical specifications on the spot shall be strictly implemented.
Credit guaranteeSome 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.
Protection mode for type selection of dry-type test transformer
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， which also ensures the rated voltage of kV; Oil immersed transformers are generally suitable for distribution equipment.
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.
In terms of the place of use， dry-type transformers are mostly used in & ldquo; Fireproof and explosion-proof type & rdquo; It is easy to use in large and medium-sized engineering buildings and multi-storey buildings; The oil immersed transformer because of & ldquo; Accident & rdquo; There is likely to be oil or leakage after fire， and most application places leading to fire accidents are easy to choose in large and medium-sized engineering buildings and multi-storey buildings;