Three-Phase Oil-Immersed Distribution Transformer | 10–2000 kVA
The three-phase oil-immersed distribution transformer is built for continuous-duty step-down service in industrial, utility and commercial power networks. Rated from 10 kVA to 2000 kVA, it uses cold-rolled grain-oriented silicon steel core laminations, oxygen-free copper windings and a reinforced insulation structure to deliver low no-load and load losses, low noise and high short-circuit withstand capability.
Standard primary voltages up to [e.g. 10 / 11 / 20 kV] with a 0.4 kV secondary. Hermetically sealed (corrugated tank) and conservator-type designs are both available, for indoor substations, outdoor pad-mount and pole-mount installation.
The three-phase oil-immersed distribution transformer is built for continuous-duty step-down service in industrial, utility and commercial power networks. Rated from 10 kVA to 2000 kVA, it uses cold-rolled grain-oriented silicon steel core laminations, oxygen-free copper windings and a reinforced insulation structure to deliver low no-load and load losses, low noise and high short-circuit withstand capability.
Standard primary voltages up to [e.g. 10 / 11 / 20 kV] with a 0.4 kV secondary. Hermetically sealed (corrugated tank) and conservator-type designs are both available, for indoor substations, outdoor pad-mount and pole-mount installation.
Applications
Industrial parks & factories — Main step-down transformer for production loads, motor drives and process equipment.
Utility & grid distribution — 10 kV / 0.4 kV distribution substations, urban and rural network upgrades.
Commercial buildings & campuses — Pad-mount or substation units serving HVAC, lifts, lighting and tenant distribution.
Renewable energy — Step-up or grid-connection duty for solar PV and wind farms [confirm rating range available].
Infrastructure & mining — Heavy-duty continuous operation in demanding environments, including high-altitude or high-humidity sites.
Key Features
Low losses — Cold-rolled grain-oriented silicon steel core and oxygen-free copper windings reduce both no-load and load losses, cutting 20-year operating cost.
Low noise — Optimised core clamping and tank damping keep sound levels suitable for residential-adjacent substations: ].
High short-circuit withstand — Reinforced winding and clamping structure withstands the thermal and mechanical stress of through-faults per [IEC 60076-5 / GB 1094.5].
Long service life — New-generation insulation structure and sealed oil system slow ageing and reduce maintenance intervals.
Sealed or conservator design — Hermetically sealed corrugated-tank units require no oil testing for years; conservator-type units with oil level gauge and pressure relief device suit larger ratings.
Full protection set — Pressure relief valve, gas relay (conservator type), thermometer and oil level indicator as standard on applicable ratings.
