Single Phase Pole Mounted Overhead Transformer

Description

Single-phase pole-mounted transformers are a common type of electrical distribution equipment used to transfer electrical energy from distribution lines to homes and commercial buildings. It is usually installed on utility poles and converts high voltage (usually 11kV or 33kV) to low voltage (usually 230V or 400V) for home and business use.

Single-phase overhead transformer’s structure is reasonable, the loss is significantly reduced, and the single-phase transformer can go deep into the load center, which is beneficial to reduce line loss and improve power supply reliability. It is widely used in urban and rural distribution networks, residential quarters, etc., and has outstanding economic benefits and social benefits. benefit.

Single Phase Pole Mounted Transformer Advantages

• Lower operating costs

• Higher system reliability

• Simple and quick installation

• Beautiful and modern form factor

• Excellent insulation and sealing system

• The product can be operated in single-phase, or three single-phase units in groups as a three-phase operation

Single Phase Overhead Transformer Parameter

Single-Phase Overhead Transformer Features

a. Coils and iron cores are vacuum-dried, and the transformer oil is vacuum-filtered and oil-filled to minimize moisture inside the transformer.

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

c. Since the corrugated sheet replaces the oil conservator, the transformer oil is isolated from the outside world, which effectively prevents the entry of oxygen and water and leads to the decline of insulation performance.

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

e. Low-voltage windings of oil-immersed transformers generally adopt a cylindrical structure or spiral structure; high-voltage windings adopt a multi-layer circular simple structure so that the ampere-turn distribution of the winding is balanced, the magnetic flux leakage is small, the mechanical strength is high, and the short-circuit resistance ability powerful.

In Western developed countries, Southeast Asia, and North and South America, single-phase transformers are widely used as distribution transformers. In a distribution network with a decentralized power supply, single-phase transformers have great advantages as distribution transformers. It can reduce the length of low-voltage distribution lines, reduce line losses, and improve power supply quality.

In recent years, my country’s State Grid has gradually begun to promote pilot single-phase transformers in some areas. The column-mounted single-phase transformer produced by Shanghai Transmission and Distribution Electric Co., Ltd. adopts a high-efficiency and energy-saving coil core structure design and adopts a column-mounted suspension installation method. It is small in size, small in infrastructure investment, reduce the radius of low-voltage power supply, and can reduce low-voltage line loss by 60 %above. It is suitable for rural power grids, remote mountainous areas, scattered villages, agricultural production, lighting, and power consumption, and can also be used for energy-saving transformation of railways and urban power grids on pole-mounted power distribution lines.