Oil Immersed Transformers 10 kV and 35 kV Changyao

Changyao oil transformers are designed for the highest electrical and mechanical stability. Available in 10 kV and 35 kV versions, they form a reliable link in transmission and distribution networks. Windings made of copper or aluminium feature high mechanical strength and short-circuit resistance. The company is a long-standing supplier to China State Grid Corporation, fulfilling framework contracts (2020, 2021, 2022, 2023) for oil transformer supplies for distribution networks in Hubei, Sichuan and Anhui provinces. Changyao oil transformers operate in the harshest conditions — from hydropower plants to industrial installations in mining and metallurgy. Products comply with national standards (GB 1094) and have been tested at the National Quality Supervision and Inspection Centre. Available cooling options: ONAN (natural oil and air circulation), ONAF (forced air cooling), OFAF (forced oil and air flow).