Premium Efficiency (Tier-1) Oil-Immersed Distribution Transformer – 15kV Class
Key components include
Laminated from high-permeability silicon steel sheets to form a closed magnetic circuit.
Made of copper or aluminum wire, serving as conductive loops wound around the core.
Houses insulating oil and supports other components.
Compensates for oil volume changes.
Prevents moisture ingress.
Releases excessive internal pressure.
Enhance heat dissipation.
Provide external insulation for terminals.
Adjusts voltage ratio.
Detects internal faults.
Monitor and maintain oil quality.
Serves as the primary insulation and cooling medium.
product details
Performance Features
• Near-circular core cross-section improves three-phase balance and lowers harmonic distortion.
• Sealed construction protects insulation from environmental factors.
Cooling Methods
Advantages
Insulation Structure
Internal Insulation
Operational Parameters
▪Top oil temperature ≤ 90°C (85°C recommended for longevity).
▪Alarm triggers at 80°C.
▪Permits 1.1–1.2× rated current during emergencies.
▪Monitor load/temperature post-alarm; reduce load if necessary.
Definition & Structure
An oil-immersed transformer is a common power equipment that performs critical tasks such as voltage conversion and power distribution in electrical grids. It is widely used in urban/rural power grid upgrades, industrial/mining applications, combined transformers, and prefabricated substations.