3 phase oil immersed power transformer
SZ22-25000/35-10.5
1.Transformer operating efficiency ≥ 97%.
2.Stable voltage: On-load/non-excitation tap changer for online adjustment without power cut, adapting to load fluctuations.
3.Stable structure: High-quality iron core + oxygen-free copper windings, strong short-circuit resistance and low failure rate.
4.Sealed design: Leak-proof, moisture-proof, long maintenance-free cycle and low daily O&M workload.
5.Low noise & eco-friendly: Suitable for substations, industrial plants, new energy supporting projects, etc.
6.Compact design: Small size, light weight, easy to install and transport, applicable to 35kV main grid, industrial step-down, park power distribution.
Product Details
SZ22-25000/35-10.5
Basic Parameters
Product Type: Three-phase two-winding / three-phase three-windingRated Capacity: 50kVA – 63000kVAVoltage 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: High-efficiency energy-saving transformerStandards Compliance: GB1094, IEC60076
Core Material Configuration
Core: High-permeability grain-oriented silicon steel sheet, low no-load loss and low noise operationWinding: High-purity oxygen-free copper winding with high mechanical strength and excellent short-circuit resistanceTank: Fully sealed structure, leak-proof and moisture-proof, featuring an extended maintenance-free service cycle
Product Advantages
Ultra-low power loss, energy saving and low operational cost.Online on-load voltage regulation ensures stable voltage against load fluctuations; off-circuit manual or motorized regulation is optional.Sealed construction with zero leakage and simple maintenance.Superior short-circuit resistance, reliable performance and long service life.Compact structure for easy installation and transportation, suitable for various operating conditions.
Application Scenarios
35kV substation main transformers, general step-down stations for large factories, industrial park power distribution, new energy boost supporting systems, and power supply systems for industrial & mining enterprises.
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