Oil-immersed voltage transformer
1. Extremely low power consumption, energy-saving and cost-effective operation
2. Pressure regulation is flexible, and the output voltage remains stable even under load fluctuations.
3. Leak-proof and sealed, simple and convenient for operation and maintenance.
4. Excellent short-circuit resistance performance, reliable operation, and long service life
5. Compact design, convenient for installation and transportation, suitable for various working conditions
1. Main Parameters
Product Type: Three-phase double winding, oil-immersed self-cooling on-load tap-changing main transformer
Rated Capacity: 6300KVA-125000KVA
Voltage Regulation Method: On-load voltage regulation on the high-voltage or non-magnetic side
Cooling Method: ONAN / optional ONAF
Connection Group: Dyn11 / YNd11 (industry standard)
Energy Efficiency Class: (High-efficiency energy-saving transformer)
Implementation Standards: GB1094, IEC60076
Core Material Configuration
Core: High magnetic permeability silicon steel sheets, low no-load loss and low noise level
Winding: High-purity oxygen-free copper winding, high mechanical strength and strong short-circuit resistance
Oil tank: sealed structure, anti-leakage, moisture-proof, long maintenance-free period
Product benefits
Ultra-low loss, energy-saving and efficient, low operating costs
Online load voltage regulation ensures stability under load fluctuations. As an alternative, non-magnetic or non-magnetic voltage regulation in electric motors can be selected.
Sealed design, no leakage, simple operation and maintenance
Excellent short-circuit resistance, reliable operation, and long service life
Compact design, easy to install and transport, suitable for various working conditions
Applicable scenarios
110 kV substations, main transformers of large factories, power distribution in industrial parks, new energy reinforcement, power supply systems for industrial and mining enterprises.


