| 摘要 |
A composition based on zinc oxide for low and medium voltage varistors which contains additional elements in the form of oxides, where the oxides are contained in the composition in accordance with the following percentages by weight: -2.5 </= Sb2O3 </= 4.5 -0.8 </= Co3O4 </= 1 -0.4 </= NiO </= 1 -0 < Cr2O3 </= 0.8 -0.6 </= Mn3O4 </= 0.8 -4.2 </= Bi2O3 </= 4.6 -0.05 </= PbO </= 0.15 -0.001 </= SiO2 </= 0.005 -0.001 </= Al2O3 </= 0.002 -0.04 </= B2O3 </= 0.07 -
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