During the long operational time, the film insulation is exposed to the electrical, thermal and mechanical stresses, which will cause insulation degradation and lead to breakdown finally.

绝缘薄膜材料在长期的运行过程中，受到电、热、机械和环境因素的联合作用，其性能将因此逐渐变坏，并最终导致绝缘击穿。

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All these benefits are supposed to lead to lower operational costs for utilities over time and help consumers understand how much energy they use and how to manage and conserve energy.

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