S Series — Hermetic Oil-Immersed Distribution Transformer
I. Product Introduction
S Series transformers are high-efficiency, energy-saving three-phase oil-immersed distribution transformers with a fully hermetic design. Their construction features a high-permeability silicon steel core, full copper windings, and a sealed corrugated oil tank.
The product features ultra-low energy losses, enhanced reliability, maintenance-free operation, and a long service life. This transformer is a standard energy-saving oil-immersed solution widely used in new power grids, industrial and commercial power supply, renewable energy systems, and public buildings.
II. Main 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 K
Impedance voltage: 4.0% – 6.0% (depending on capacity)
Energy efficiency level: high efficiency and energy saving
III. Main features
Increased efficiency and energy performance
The equipment offers maximum energy-saving efficiency, significantly reducing long-term electricity operating costs and accelerating the payback period of capital investment.
No need for regular maintenance
Thanks to the corrugated oil tank, reliable isolation from the external environment is ensured, preventing the ingress of air and moisture. This slows down the aging of the transformer oil and allows the device to operate without maintenance or oil replacement throughout its entire service life.
High resistance to short-circuit conditions
The construction with all-copper windings, optimized load distribution, and reinforced mechanical foundation ensures enhanced short-circuit resistance, as well as stable and safe operation under any operating conditions.
IV. Application Scenarios
Construction and upgrading of power grids: urban and rural distribution networks, unit substations, and outdoor pole-mounted transformer installations
Industrial and commercial facilities: industrial parks, manufacturing plants, shopping centers, hotels, office complexes
Public infrastructure: medical institutions, educational facilities, data centers, railway transport, airports, and train stations
Renewable energy projects: solar photovoltaic power stations, wind power plants, and energy storage and distribution systems
