Many customers wonder why identical transformers can operate for 20 years in China but only 8 to 10 years in Southeast Asia. The core difference stems from insulation classes mismatched to operating conditions. Southeast Asia sees persistently high temperatures. Transformers with standard Class F insulation undergo rapid aging, cracking and failure of insulation layers under prolonged high-temperature operation, which may easily lead to equipment breakdown.

Transformers engineered for Southeast Asian conditions adopt Class H ultra-high-temperature-resistant insulation materials rated at 180°C, combined with vacuum impregnation technology. The dense and robust insulation delivers outstanding performance in heat resistance, anti-aging and moisture tolerance. It maintains stable insulation even under sustained ambient temperatures above 40°C and high humidity, greatly extending service life and mitigating failure risks at the source. Feel free to contact us for professional technical support.