S Series - Sealed Oil Immersed Distribution Transformer
I. Product Introduction
The S series transformers are highly efficient, energy-saving, three-phase oil-filled distribution transformers with a fully sealed design. They feature a high-permeability silicon steel core, full-thickness copper windings, and a sealed corrugated oil tank.
This product features ultra-low energy losses, increased reliability, maintenance-free operation, and a long service life. This transformer is a standard energy-saving oil-filled solution widely used in new power grids, industrial and commercial power supplies, renewable energy systems, and public buildings.
II. Basic technical parameters (customizable)
Rated power: 10KVA-5000KVA
Vector group: Dyn11 (recommended), Yyn0
Cooling method: ONAN (Oil Natural Air Natural)
Insulation class: class A, temperature rise ≤ 60 thousand
Impedance voltage: 4.0% – 6.0% (depending on capacity)
Energy efficiency level: high efficiency and energy saving
III. Main Features
Increased efficiency and energy efficiency
The equipment boasts maximum energy-saving efficiency, which significantly reduces long-term operating costs for electricity and accelerates the payback period for capital investments.
No need for regular maintenance
The corrugated oil tank provides reliable insulation from the external environment, preventing air and moisture from entering. This slows down the aging of the transformer oil and allows the unit to operate without maintenance or oil changes throughout its entire service life.
High resistance to short-circuit conditions
The design with solid copper windings, optimized load distribution and a reinforced mechanical base ensures increased short-circuit resistance, as well as stable and safe operation under all operating conditions.
IV. Application Scenarios
Construction and renovation of power grids: urban and rural distribution networks, block substations, as well as outdoor transformer installations on supports
Industrial and commercial facilities: industrial parks, manufacturing plants, shopping centers, hotels, office complexes
Public infrastructure: medical facilities, educational institutions, data centers, rail transport, airports and train stations
Renewable energy projects: solar photovoltaic power plants, wind power plants, as well as energy storage and distribution systems


