Its coil and insulating component are made of Dupont NOMEX insulating materials, with H-level heat-resistance and better fireproof performance than F-level.

• 它与F级干式电力变压器的区别在于线圈和绝缘构件采用美国杜邦公司NOMEX绝缘系统材料，耐温水平达到H型，防火性能较F级更为优越。