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公开(公告)号：US5547907A
公开(公告)日：1996-08-20
申请号：US388086
申请日：1995-02-14
摘要： The present invention relates to a zinc oxide varistor as a characteristic element of an arrestor for protecting a transmission and distribution line and peripheral devices thereof from surge voltage created by lightning, and more particularly a highly reliable zinc oxide varistor excellent in the non-linearity with respect to voltage, the discharge withstand current rating properties, and the life characteristics under voltage, a method of preparing the same, and PbO type crystallized glass for coating oxide ceramics employed for a zinc oxide varistor, etc. A zinc oxide varistor of the present invention comprises a sintered body (1) and a high resistive side layer (3) consisting of crystallized glass with high crystallinity containing the prescribed amount of SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, NiO, etc., formed on the sides of the sintered body (1) to enhance the strength and the insulating property thereof, thereby improving the non-linearity with respect to voltage, the discharge withstand current rating properties and the life characteristics under voltage. The crystallized glass composition for coating of the present invention comprises PbO as a main component and additives such as ZnO, B.sub.2 O.sub.3, SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, and NiO to enhance the crystallinity and the insulating property thereof.
摘要翻译： 本发明涉及作为用于保护输配电线路及其外围装置的避雷器的特征元件的氧化锌压敏电抗器由闪电产生的浪涌电压，更具体地说，涉及一种非常可靠的非线性优异的氧化锌压敏电阻， 相对于电压，放电耐受额定电流特性，电压下的寿命特性，制备方法以及用于氧化锌变阻器等的氧化物陶瓷的PbO型结晶玻璃等。本发明的氧化锌变阻器 本发明包括烧结体（1）和高电阻侧层（3），所述高电阻侧层（3）由在所述烧结体的侧面上形成的含有规定量的SiO 2，MoO 3，WO 3，TiO 2，NiO等的具有高结晶度的结晶玻璃构成 （1）提高强度和绝缘性，从而提高相对于电压的非线性，放电耐受曲线 额定特性和电压下的寿命特性。 本发明的涂布用结晶化玻璃组合物包含PbO作为主要成分，添加ZnO，B2O3，SiO2，MoO3，WO3，TiO2，NiO等添加剂，以提高其结晶性和绝缘性。
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公开(公告)号：US5447892A
公开(公告)日：1995-09-05
申请号：US147182
申请日：1993-11-01
摘要： The present invention relates to a zinc oxide varistor as a characteristic element of an arrestor for protecting a transmission and distribution line and peripheral devices thereof from surge voltage created by lightning, and more particularly a highly reliable zinc oxide varistor excellent in the non-linearity with respect to voltage, the discharge withstand current rating properties, and the life characteristics under voltage, a method of preparing the same, and PbO type crystallized glass for coating oxide ceramics employed for a zinc oxide varistor, etc. A zinc oxide varistor of the present invention comprises a sintered body (1) and a high resistive side layer (3) consisting of crystallized glass with high crystallinity containing the prescribed amount of SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, NiO, etc., formed on the sides of the sintered body (1) to enhance the strength and the insulating property thereof, thereby improving the non-linearity with respect to voltage, the discharge withstand current rating properties and the life characteristics under voltage. The crystallized glass composition for coating of the present invention comprises PbO as a main component and additives such as ZnO, B.sub.2 O.sub.3 , SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, and NiO to enhance the crystallinity and the insulating property thereof.
摘要翻译： 本发明涉及作为用于保护输配电线路及其外围装置的避雷器的特征元件的氧化锌压敏电抗器由闪电产生的浪涌电压，更具体地说，涉及一种非常可靠的非线性优异的氧化锌压敏电阻， 相对于电压，放电耐受额定电流特性，电压下的寿命特性，制备方法以及用于氧化锌变阻器等的氧化物陶瓷的PbO型结晶玻璃等。本发明的氧化锌变阻器 本发明包括烧结体（1）和高电阻侧层（3），所述高电阻侧层（3）由在所述烧结体的侧面上形成的含有规定量的SiO 2，MoO 3，WO 3，TiO 2，NiO等的具有高结晶度的结晶玻璃构成 （1）提高强度和绝缘性，从而提高相对于电压的非线性，放电耐受曲线 额定特性和电压下的寿命特性。 本发明的涂布用结晶化玻璃组合物包含PbO作为主要成分，添加ZnO，B2O3，SiO2，MoO3，WO3，TiO2，NiO等添加剂，以提高其结晶性和绝缘性。
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