The hottest Xuzhou outdoor box transformer manufac

2022-10-18
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Xuzhou outdoor box transformer manufacturer

distribution transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It reduces the 10 (6) kV or 35kV network voltage to the 230/400v bus voltage used by users

these products are suitable for AC 50 (60) Hz, three-phase maximum rated capacity 2500kVA (single-phase maximum rated capacity 833kva, Xuzhou outdoor box transformer manufacturer, generally does not recommend the use of single-phase transformer), and can be used indoors (outdoors) in match

when the capacity is 315KVA and below, it can be installed on the pole, the ambient temperature is not higher than 40 ℃, the temperature of Xuzhou outdoor box transformer manufacturer is not lower than -25 ℃, the maximum daily average temperature is 30 ℃, the maximum annual average temperature is 20 ℃, and the relative humidity of Xuzhou outdoor box transformer manufacturer is not more than 90% (ambient temperature is 25 ℃)

the altitude shall not exceed 1000m of the Rotating Zigzag rod. If it is inconsistent with the above service conditions, appropriate quota adjustment shall be made according to the relevant provisions of GB

characteristics of oil immersed transformer

ordinary oil immersed transformer has the following characteristics:

(1) low loss and remarkable energy saving effect: the winding is wound with oxygen free copper wire; The iron core adopts three-level full inclined joints, which are painted and bonded to reduce no-load loss

(through painted plastic bottle 2) it adopts advanced winding structure and special winding end face support, and the product has high insulation strength and short-circuit resistance

(3) adopt effective axial compression, special hanging plates, new fasteners and advanced technological measures to ensure the fastening of the body and the firm and reliable connection with the oil tank

(4) adopt vacuum oiling process to further strengthen the insulation strength of products

(5) when the product is transported to the installation site, there is no need to check the hanging core, which saves the installation time

amorphous alloy oil immersed transformer has the following characteristics:

(1) amorphous alloy iron core is adopted, and the no-load loss is very small; Taking amorphous SH15 series as an example, the no-load loss of this series of products is only about 25% of that of ordinary S11 series products with the same capacity

(2) it also has other advantages of the above ordinary oil immersed transformer

including astronaut materials and scientific experimental supplies. The performance characteristics of oil immersed transformer

a. the low-voltage winding of oil immersed transformer generally adopts the cylindrical structure of copper foil winding except for the small capacity copper conductor; The high-voltage winding adopts multi-layer cylindrical structure, so that the ampere turn distribution of the winding is balanced, the magnetic leakage is small, the mechanical strength is high, and the short-circuit resistance is strong

b, the iron core and winding adopt fastening measures respectively. The fastening parts such as the height of the device and the low-voltage lead are equipped with self-locking locknuts, and the non hanging core structure is adopted, which can withstand the bumping of transportation

c, the coil and iron core are vacuum dried, and the transformer oil is vacuum filtered and injected to minimize the moisture inside the transformer

d. The oil tank adopts corrugated sheet, which has the breathing function to compensate for the volume change of oil caused by temperature change. Therefore, this product does not have the company to shift its development direction to the oil conservator in the field of new materials related to the photovoltaic industry, which obviously reduces the height of the transformer

e. since the corrugated sheet replaces the oil conservator, the transformer oil is isolated from the outside, which effectively prevents the entry of oxygen and water, resulting in the decline of insulation performance

f. According to the above five performances, the oil immersed transformer does not need to change oil during normal operation, which greatly reduces the maintenance cost of the transformer and prolongs the service life of the transformer

inspection of transformer operation and maintenance

comparison of transformers

it is generally believed that transformers from different manufacturers, different types of transformers, different operating environments, and improper installation will make the noise of transformers different

understanding of dry transformer

reason: some users have used oil transformer before and have a deep understanding of oil transformer. When they first contact dry-type transformer, they think that the noise of dry transformer and oil transformer should be the same

solution: in fact, the noise of oil change is also very loud, but the inside is full of oil, and a sealed iron shell is added outside, so the sound cannot be transmitted. When the dry iron core is exposed outside, a little sound will come out. Noise is the inherent characteristic of transformer, and the magnitude of noise will not affect the quality of transformer

strengthen the daily maintenance of the transformer in operation

1. Strengthen the daily inspection of the transformer. Once any abnormality is found, repair it in time to ensure the normal operation of the transformer

2. Regularly observe the temperature display change of the thermostat and whether the three-phase temperature is balanced. If the temperature display of a certain phase is abnormal and the temperature rise of the transformer is abnormal, find out the cause in time

3. Strengthen the regular inspection of the transformer, and the inspection items include:

① check whether all fastening connections are loose

② check whether the connecting piece of the tapping gear is loose

③ check whether the fan, temperature controller device and other auxiliary devices can operate normally

④ check whether the shell and iron core are well grounded at one point

⑤ clean the dust and dirt on the transformer

⑥ replace the aged rubber pad in time to prevent the noise caused by the aging of the rubber pad

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