Products

Product Features

High-voltage transformer,use Japanese Toshiba analysis software and our company special calculation and validation procedures to the transformer core,winding, structural components, lead, fuel tanks, etc. Parts of the optimal design and carry on the omni- directional validation, ensure product performance.

Superior process equipment,elaborate material selection and efficient manufacturing,resulting in a transformer with a small volume, light weight,low loss,low-partial-discharge, low noise characteristics,the product quality is superior, energy conservation and environmental protection, easy installation and maintenance, reliable operation and effectively reduced products running costs.

Our product SSZ20-240000/220 has passed the short-circuit withstand capacity and all routine type tests of the National Transformer Quality Supervision and Inspection Center.

This product is stable,reliable,economical and environmentally friendly, and is suitable for power plants, substations, large industrial and mining petrochemical enterprises,etc.

Technical Specifications

500kV oil-immersed single-phase double-winding unexcited 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.