Product description
Product Overview
The 126kV Voltage Transformer is specifically developed for high-voltage transmission systems where precise voltage measurement and dependable relay protection are essential for maintaining grid stability. It converts high primary voltage into standardized secondary voltage signals used by protection relays, metering devices, SCADA systems, and substation automation equipment.
Designed for transmission substations, utility power networks, renewable energy grid connections, and industrial power facilities, the transformer provides outstanding electrical performance under continuous high-voltage operation. Its insulation system is engineered to withstand lightning impulse voltage, switching surges, and long-term operating stress while maintaining stable measurement accuracy.
With reliable construction, low maintenance requirements, and customizable electrical specifications, the 126kV Voltage Transformer is an ideal solution for utilities and EPC contractors seeking dependable performance throughout the service life of a substation.
Key Features of 126kV Voltage Transformer
High-Precision Voltage Transformation
The transformer provides accurate secondary voltage outputs for energy metering, relay protection, fault recording, and substation monitoring systems, ensuring dependable operation of high-voltage networks.
Enhanced Insulation for Transmission Applications
Its insulation structure is specifically designed for 126kV systems, offering excellent resistance to lightning impulse, switching overvoltage, and environmental pollution commonly encountered in outdoor substations.
Reliable Outdoor Operation
Built for long-term outdoor service, the transformer features a durable construction capable of operating in high humidity, dust, salt spray, and wide temperature variations with minimal maintenance.
Advantages of 126kV Voltage Transformer Compared with Other Voltage Levels
Designed for Utility Transmission Networks
Unlike 35kV voltage transformers used in distribution systems, the 126kV Voltage Transformer is optimized for transmission substations where higher insulation levels, greater measurement reliability, and continuous operation are required.
Supports Modern Digital Substations
The transformer can be integrated with conventional protection systems as well as modern digital substations and SCADA platforms, providing accurate voltage signals for grid monitoring and intelligent control.
FAQ – 126kV Voltage Transformer
1. What is the typical delivery time for a 126kV Voltage Transformer?
Standard configurations are generally delivered within 4–6 weeks. For customized projects requiring special voltage ratios, accuracy classes, or insulation configurations, the lead time is typically 6–10 weeks.
2. Is the 126kV Voltage Transformer suitable for outdoor substations?
Yes. It is specifically designed for outdoor transmission substations and can operate reliably under severe environmental conditions, including high humidity, dust, UV exposure, coastal environments, and large temperature fluctuations.
3. Can the voltage ratio and accuracy class be customized?
Yes. The transformer can be manufactured with customized primary and secondary voltage ratios, multiple secondary windings, and different accuracy classes to meet the technical specifications of utility companies and EPC projects.
4. What is the main difference between a 35kV and a 126kV Voltage Transformer?
The 126kV Voltage Transformer is intended for transmission-level substations and therefore requires a higher insulation level, greater electrical withstand capability, and stricter manufacturing standards than a 35kV Voltage Transformer used in medium-voltage distribution systems.
