3 Phase Oil Immersed Distribution Transformer

Oil immersed distribution transformers are one of the important equipment in the power supply and distribution systems of industrial and mining enterprises and civil buildings. They reduce the network voltage of 10 (6) kV or 35kV to the 230/400V bus voltage used by users. This product is suitable for AC 50 (60) Hz, three-phase maximum Nameplate capacity 2500kVA (single-phase maximum Nameplate capacity 833kVA, single-phase transformer is generally not recommended), and can be used indoors (outdoors). When the capacity is 315kVA or less, it can be installed on the pole. The ambient temperature is not higher than 40 ℃, not lower than -25 ℃, the maximum daily average temperature is 30 ℃, the maximum annual average temperature is 20 ℃, and the relative humidity is not more than 90% (ambient temperature is 25 ℃), The altitude shall not exceed 1000m. If it does not comply with the above usage conditions, appropriate quota adjustments should be made in accordance with the relevant provisions of GB6450-86.

1. Non enclosed oil immersed transformers: mainly including S8, S9, S10 and other series products, widely used in industrial and mining enterprises, agriculture, and civil buildings.

2. Closed oil immersed transformers: mainly including S9, S9-M, S10-M and other series of products, commonly used in places with high oil pollution and chemical substances in the petroleum and chemical industries.

3. Sealed oil immersed transformers: mainly available in BS9, S9-, S10-, S11-MR, SH, SH12-M and other series of products, can be used for power distribution in various places such as industrial and mining enterprises, agriculture, and civil buildings.

a. The low-voltage winding of oil immersed transformers generally adopts a cylindrical structure with copper foil winding, except for small capacity copper wires; The high-voltage winding adopts a multi-layer cylindrical structure, ensuring a balanced distribution of ampere turns, low magnetic leakage, high mechanical strength, and strong short-circuit resistance.

b. The iron core and winding each adopt fastening measures, and the fastening parts such as the height and low-voltage leads of the device are equipped with self-locking anti loosening nuts. They adopt a non hanging core structure and can withstand transportation bumps.

c. The coil and iron core are vacuum dried, and the transformer oil is filtered and injected using a vacuum process to minimize moisture inside the transformer.

d. The oil tank adopts corrugated plates, which have breathing function to compensate for the volume change of oil caused by temperature changes. Therefore, this product does not have an oil storage tank, which obviously reduces the height of the transformer.

e. Due to the replacement of the oil storage tank with corrugated sheets, the transformer oil is isolated from the outside, effectively preventing the entry of oxygen and water, which can lead to a decrease in insulation performance.

f. Based on the above five performance points, it ensures that the oil immersed transformer does not require oil replacement during normal operation, greatly reducing the maintenance cost of the transformer and extending its service life.

Hot Tags: 3 phase oil immersed distribution transformer, China 3 phase oil immersed distribution transformer manufacturers, suppliers, factory, pole mounted current transformers, Single Phase Oil Immersed Transformer, compact substation, Amorphous Metal Transformer, encapsulated dry type transformer, 75 kva dry type transformer