3-phase oil-immersed power transformer
SZ22-25000/35-10.5
1. Transformer operating efficiency ≥ 97%.
2. Stable voltage: on-load/off-circuit tap changer for online adjustment without power outage, adapting to load fluctuations.
3. Robust construction: high-quality iron core + oxygen-free copper windings, strong short-circuit resistance and low failure rate.
4. Sealed design: airtight, moisture-proof, long maintenance-free cycle, and low daily operational burden.
5. Low noise and eco-friendly: suitable for substations, industrial enterprises, new energy projects, etc.
6. Compact design: small size, light weight, easy to install and transport, applicable to 35 kV main grid, industrial step-down systems, and park power distribution.
SZ22-25000/35-10.5
Basic parameters
Product type: Three-phase two-winding / three-phase three-windingRated power: 50 kVA – 63000 kVAVoltage regulation: On-load tap changer or off-circuit manual/motorized tap changer on the high-voltage sideCooling method: ONAN / ONAFVector group: Dyn11 / YNd11 (industry standard configuration)Energy efficiency class: Primary energy saving (high-efficiency energy-saving transformer)Compliance standards: GB1094, IEC60076
Core Material Configuration
Core: High-quality permeability, grain-oriented, low no-load loss and low noise. Winding: High-quality oxygen-free copper winding, high mechanical strength and excellent short-circuit resistance. Tank: Fully sealed structure, airtight and moisture-proof, with a long maintenance-free cycle.
Product benefits
Ultra-low energy loss, energy-saving and low operating cost. On-load voltage regulation ensures stable voltage under load fluctuations; off-circuit manual or motorized adjustment is optional. Leak-proof sealed structure and easy maintenance. Excellent short-circuit resistance, reliable operation and long service life. Compact design for easy installation and transportation, suitable for various operating conditions.
Application Scenarios
Mainsubstation transformers35 kV, general step-down stations for large factories, power distribution in industrial parks, new energy support systems, and power supply systems for industrial and mining enterprises.
