220kV High Voltage Power Transformer
Ultra-high voltage 220kV three-phase power transformer engineered for backbone transmission networks and large-scale power distribution systems. Features advanced core technology, superior insulation design, and forced cooling systems for maximum efficiency and reliability in critical infrastructure applications.
Product Overview
The 220kV High Voltage Power Transformer represents the pinnacle of power transmission technology, designed for ultra-high voltage networks that form the backbone of national and regional electrical grids. These transformers enable efficient bulk power transmission over hundreds of kilometers with minimal losses, making them essential for modern energy infrastructure.
Engineered with advanced forced cooling systems (ONAF/OFAF), our 220kV transformers maintain optimal operating temperatures even under continuous heavy load conditions. The core utilizes premium-grade oriented silicon steel with optimized flux density distribution, while the windings employ high-conductivity copper with advanced transposition techniques to minimize circulating currents and hot spots.
Every 220kV transformer undergoes extensive factory testing including lightning impulse tests, switching impulse tests, temperature rise tests, and partial discharge measurements. This rigorous quality assurance process, combined with advanced manufacturing techniques, ensures exceptional reliability for critical infrastructure applications worldwide.
Frequently Asked Questions
What is the typical delivery time for a 220kV transformer?
Standard lead time is 20-24 weeks from order confirmation due to the complexity and extensive testing requirements. Rush orders may be accommodated depending on production capacity.
What cooling systems are recommended for 220kV applications?
ONAF (Oil Natural Air Forced) or OFAF (Oil Forced Air Forced) cooling is standard for 220kV transformers to handle the high thermal loads. Cooling capacity can be staged for load management.
Can the transformer be designed for specific system requirements?
Yes, full customization is available including voltage ratios, vector groups, impedance values, tap ranges, and special features like tertiary windings or harmonic filters.
What special tests are performed on 220kV transformers?
In addition to routine tests, 220kV units undergo lightning impulse tests, switching impulse tests, partial discharge measurements, acoustic noise tests, and short-circuit withstand tests.
What is the expected operational lifespan?
With proper maintenance and condition monitoring, 220kV transformers have a design life of 30-40 years. Oil analysis and dissolved gas analysis help predict and prevent failures.
Do you provide site installation and commissioning?
Yes, we offer comprehensive services including transportation supervision, on-site installation guidance, commissioning, testing, and operator training for successful project execution.
What international standards are supported?
Our 220kV transformers comply with IEC 60076, GB/T 1094, and can be manufactured to ANSI/IEEE, BS, or other regional standards as required by the project.
What warranty and after-sales support is provided?
Standard warranty is 24 months from commissioning or 30 months from shipment. We provide lifetime technical support, spare parts supply, and periodic maintenance services.
