Products

Product Features

1.On-load Voltage Regulation Capability
Equipped with a reliable on-load tap changer (OLTC), the transformer can adjust the output voltage under energized conditions. This helps maintain stable voltage levels during load fluctuations and improves the quality and reliability of power supply.
2.High Efficiency and Low Energy Loss
The transformer uses a low-loss silicon steel core with optimized magnetic circuit design to reduce no-load losses and noise levels. High-quality copper windings minimize load losses while improving overall energy efficiency.
3.Advanced Oil-immersed Cooling System
The oil circulation system effectively transfers heat generated during operation. Depending on project requirements, cooling methods such as ONAN (Oil Natural Air Natural) or ONAF (Oil Natural Air Forced) can be provided to ensure safe operation under different load conditions.
4.Reliable Insulation Structure
High-quality insulating materials, advanced drying processes, and strict manufacturing controls ensure excellent dielectric strength and long-term insulation reliability. The sealed oil tank design also helps prevent moisture and contaminants from affecting transformer performance.
5.Strong Mechanical Strength
The transformer adopts a robust tank structure and optimized clamping system to withstand transportation impacts, short-circuit forces, and harsh operating environments.

Technical Specifications

110kV oil-immersed three-phase double-winding on-load voltage regulating power transformer.

Applications

Customization Service

Certifications

Packing and Delivery

Product Design and Manufacturing Quality

Yawei Transformer applies strict quality control throughout the entire manufacturing process, including:

• Core cutting and assembly
• Winding production
• Vacuum oil filling
• Insulation system testing
• Temperature rise testing
• Partial discharge testing
• Factory acceptance testing (FAT)

Installation and Maintenance

1.Daily/Weekly Inspections
Visual check for oil leaks at gaskets, valves and welds. Verify oil & winding temperatures stay within normal limits. Listen for abnormal hum or buzz signalling loose core laminations or overload.
2.Monthly/Quarterly Checks
Check silica‑gel breather; regenerate/replace gel if pink (saturated). Confirm conservator oil level, top‑up with matching‑grade oil as needed. Clean bushings to avoid flashovers from dirt contamination.
3.Annual Maintenance
Run DGA test on insulating oil for early internal fault detection (arcing, overheating). Verify protective relays and alarm circuits work properly. Retighten external electrical connections; check tank paint and anti‑corrosion condition.
4.Long‑term Overhaul
Carry out major overhaul every 10‑15 years subject to service conditions and oil analysis. Works include oil draining, inspection of inner core and coil clamping parts, gasket replacement, and insulating‑oil reconditioning or full renewal.