When the transformer is put into operation， a great & ldquo; Tweet & rdquo; The high-voltage fuse is broken when the noise is serious; If the tap changer is defective， it will cause mild & ldquo; Squeak & rdquo; Corona discharge sound， it is likely to burn the circuit breaker of the tap changer. In case of such situation， the high-capacity transformer must be replaced by the small-capacity transformer with high utilization rate，CuritibaTelephone number of dry-type transformer manufacturer， and then the iron loss is considered and the copper loss is ignored. In fact， for a certain load， the active power loss of small capacity exceeds that of large capacity The active power loss of the transformer， so it consumes electromagnetic energy.
Overload or short circuit occurs inside the power transformer. Flammable insulating raw materials are endangered by high temperature and electric isolation， which dissolve and ignite， resulting in a lot of steam bodies， greatly increasing the internal working pressure of the power transformer， causing the ignition of the casing， causing large-scale power failure， endangering all normal production manufacturing and activities. There are three reasons for fire accidents in the operation of power transformers.
lutsk Dry type transformer manufacturer
When sampling in bulk gasoline barrels， samples shall be selected according to % of the number of gasoline barrels， but not less than barrels. When sampling in batches of small and medium-sized pails or bottles samples shall be taken according to % of the total number of barrels (bottles).
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.
Oil leakage of bolt or pipe external thread
During the operation of the transformer， the resistance value of the grounding wire shall be measured accurately every two years.
For example， in the s， the radio programs applied by every family in the countryside had a ground wire， and they were often wet with tap water. Protective grounding is to bury the copper plate of metal electrical conductor in the soil layer， and then lead a point of it out of the road with transmission line， which completes the grounding protection. The grounding wire specifies the grounding wire resistance ≤ Ω. Grounding protection is a safeguard measure adopted to avoid safety accidents when using household appliances， office and other electrical equipment.
StatisticsUnder normal conditions， the actual operation of the oil immersed transformer shall be undertaken by the on-site operation and maintenance management staff. Within one week of grid connected operation， the operation and maintenance management staff shall improve the safety inspection range of the transformer， and immediately communicate and contact with the on-site project staff in case of any problems，CuritibaOil immersed air-cooled transformer， the production and processing are not smooth and the sealing is poor. The common fault of oil leakage will be caused after the oil transformer is sealed for a period of time.
The switching power supply lacks one phase of power;
The noise of dry-type transformer comes from
Process inspectionPower 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， commerce， airports， tunnel construction， chemical enterprises and factories.
Step up process of dry-type transformer?
Caused by sand holes and cracks. For crack leakage， drilling stop hole is a good way to remove in-situ stress and prevent widening.
CuritibaIf the power transformer stops running for more than h (if the allowable time should be reduced when the ambient humidity is & amp; gt; %)， it should be insulated before putting into use， and accurately measured with a V grounding megger. The insulation resistance from the primary side to the secondary side and the ground should be ^ mfl， the insulation resistance from the secondary side to the ground should be ^ mh， and the insulation resistance from the iron core to the ground should be & amp; gt; mfl (note that the grounding device piece should be removed).
The oil in the machinery and equipment of the oil storage tank shall generally stand for more than h before sampling; it is not necessary to stand when sampling on the running power transformer.
How to reduce the failure of dry-type transformer?