The triangular oil tank (triangular transformer oil tank) is a dedicated pressure-bearing enclosure designed for distribution transformers with three-dimensional triangular wound cores. Its core feature is an approximately equilateral triangular configuration. The three angled tank walls increase the heat dissipation surface area while precisely matching the symmetrical arrangement of the internal three-phase cores, maximizing the reduction of unused space. It is an oil tank solution for small and medium-sized power distribution applications, focused on space optimization and cost control, and is currently widely used with energy-efficient oil-immersed distribution transformers rated at 10 kV and 500 kVA and below.

Its core advantages include exceptional space utilization, suitability for compact installation environments, enhanced heat dissipation through angled surfaces, more balanced operating temperatures, significant advantages in all-round cost control, and a symmetrical, stable structure with high operational reliability.

Typical application scenarios

S13 and S15 series energy-efficient distribution transformers with three-dimensional wound cores, rated at 10 kV and 30 kVA to 500 kVA, are mainstream choices for rural power grid renovation and urban-rural distribution network upgrades.

Pole-mounted transformer applications in rural areas, mountainous regions, urban-rural fringe areas, and other locations with dispersed power supply points that are sensitive to equipment costs and installation space.

Indoor / semi-indoor installation scenarios with limited space, such as box-type substations, residential distribution rooms, and terminal power distribution in commercial buildings.

Power distribution support applications, such as distributed photovoltaic grid connection and temporary construction power supply, with high requirements for deployment efficiency and operation and maintenance costs.