330kV Oil Immersed Power Transformer 90MVA Capacity IEC Standard with Premium Silicon Steel Core

This 330kV oil-immersed power transformer features premium silicon steel core construction, energy-saving low-loss windings, and a hermetically sealed cooling system. These advanced components deliver minimal power dissipation, reduced operational noise, and exceptional short-circuit tolerance. With insulation grade exceeding LI950AC395 standards, it maintains reliable performance in harsh outdoor environments. The transformer supports integration of real-time online monitoring and on-load tap-changer devices for enhanced grid stability and operational efficiency.

Our transformers have been showcased at major international exhibitions including Dubai, United States, Thailand, Philippines, and other global markets.

Power transformers certified with CE, ISO, KEMA, UL certificates and comprehensive test reports.

Guanggao Transformer is a professional manufacturer with nearly 25 years of export experience, producing single-phase, three-phase, dry-type, distribution, and high-voltage transformers (110 kV and above). We comply with IEEE/ANSI/UL/CSA and IEC standards.

• Modern laboratory with high-voltage test hall
• 3000kV lightning impulse testing device
• CA-21 moisture analyzer from Mitsubishi
• American Fluke Ti30 infrared image detector
• American RM-3WE three dimensional vibration analyzer
• National power transformer energy efficiency testing laboratory (2011)

• National Olympic Security Power Project
• National 851 project
• Guangzhou Asian Games construction
• Guangzhou BRT system

Our products demonstrate high safety and reliable operation throughout China and are exported to Myanmar, Madagascar, Malaysia, and other countries. "Guanggao Brand" is recognized as Guangdong famous brand, National Energy Efficiency Star Products, and Brand-Name Products in Guangdong Province.