33&35Kv Three Phase Oil Immersed Distribution Transformer

Specifications and Parameters of Three Phase Oil Immersed 33kv & 35kv Distribution Transformer 

As one of the leading distribution transformer manufacturers, Huawan specializes in delivering cutting-edge, durable transformers designed for optimal performance and compliance with stringent international quality standards.

What is the typical weight of a 33kV transformer?

The weight of a 33kV transformer varies significantly depending on its kVA rating and type. Smaller units, such as 33kV potential transformers (PTs), can weigh as little as around 90 kg. In contrast, large power transformers may exceed 100,000 kg (100 tons). For common 33kV distribution transformer sizes, like a 1000 kVA unit, the weight typically falls in the 3,000 to 4,000 kg range, while larger 10 MVA models often range from 18,000 to 28,000 kg, influenced by factors such as design, oil volume, and additional components.

How is a 33kV transformer installed?

Installing a 33kV distribution transformer requires thorough site preparation, including a solid foundation, oil containment systems, and adequate clearances for safety and maintenance. The process involves safely positioning the transformer, connecting high-voltage and low-voltage cables, establishing proper grounding, and conducting essential pre-commissioning tests such as insulation resistance, turns ratio, and oil quality checks. These steps ensure reliable and safe operation as the 33 kV transformer steps down high voltage for distribution. Throughout the installation, strict compliance with electrical standards and safety procedures, including lockout/tagout protocols, is essential.

What are the common capacities of 33kV transformers?

33kV transformer capacities cover a broad spectrum, starting from small distribution units at around 30 kVA and extending to massive power transformers that surpass 30 MVA (30,000 kVA). Typical 33kV distribution transformer applications range from 100 kVA to 2500 kVA, while larger substation units often handle higher ratings such as 10 MVA, 25 MVA, 40 MVA, or even 50 to 63 MVA. These capacities are determined by the transformer's role in the power grid, particularly for transmitting high power over long distances, with common configurations involving voltage levels like 110/33kV or 220/33kV for bulk power transfer.