13.8KV 1200kVA Skid Mounted Substation Transformer

The 13.8kV / 1200 kVA skid-mounted substation transformer is a factory-assembled, transport-ready step-down unit designed for rapid deployment in demanding distribution environments. Built for outdoor service, the unit combines a compact skid frame with an oil-immersed core-and-coil assembly, natural oil circulation cooling (ONAN), and a five-position HV tapping arrangement for ±2×2.5% voltage adjustment. The skid package integrates all routine fittings — lift and jacking points, sidewall cable boxes, pressure-relief devices, oil sampling valves and a weatherproof marshalling/control enclosure — so the transformer can be delivered, set on prepared foundation pads, and energised with minimal on-site civil work.

Engineered to meet utility and industrial procurement specifications, this model emphasizes straightforward installation at temporary or permanent sites such as satellite substations, modular microgrids and industrial plant distribution hubs. The skid design reduces handling complexity (no heavy field assembly of radiators or conservator required) and simplifies factory testing, enabling a short project lead time and predictable site acceptance testing. The transformer’s vector group is selected to support common distribution grounding schemes and neutral management; internal design choices focus on low audible noise, tight thermal margins and proven dielectric strength for long service life.