A SnO₂ varistor which was prospected to be used in ultra-high voltages grids as an overvoltage protection element was developed. The SnO₂ varistor was doped with Cr to improve the comprehensive electrical properties. The optimal electrical parameters are achieved when the dopant of Cr is 0.05 mol% in this article. The voltage gradient of the varistor with Cr 0.05 mol% dopant is 787 V/mm, the nonlinearity is 50 and the leakage current is 7.8 μA/cm².

中文翻译：

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通过掺铬为电网量身定制的低泄漏电流（Co，Mn，Ta）-SnO ₂压敏电阻

开发了一种SnO ₂压敏电阻，有望将其用作超高压电网中的过压保护元件。SnO ₂压敏电阻掺杂了Cr以改善综合电性能。当Cr的掺杂量为0.05 mol％时，可获得最佳的电参数。Cr 0.05 mol％掺杂的压敏电阻的电压梯度为787 V / mm，非线性度为50，泄漏电流为7.8μA/ cm ²。