另一方面，由于金属氧化物避雷没有串联间隙，电阻片不仅要承受雷电过电压和操作过电压，还要耐受正常的持续相电压和暂时过电压，因而存在着在这些电压作用下的老化、寿命和热稳定问题。此外，在某些情况下，如避雷器和邻近物体间的杂散电容，以及污秽等因素引起电压沿避雷器分布不均匀时，将造成避雷器的局部过热。
On the other hand, because metal oxide lightning arrester has no series gap, resistors not only have to withstand lightning overvoltage and switching overvoltage, but also normal continuous phase voltage and temporary overvoltage, so there are aging, life and thermal stability problems under these voltages. In addition, in some cases, such as the stray capacitance between the arrester and the adjacent objects, as well as contamination and other factors, the voltage distribution along the arrester is not uniform, which will cause local overheating of the arrester.
因此，在使用中考虑的问题与常规的以碳化硅为要原料的避雷器有所不同，需要加以注意。
Therefore, the problems considered in use are different from those of conventional arresters with silicon carbide as the main raw material, which should be paid attention to.