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HRW10跌落式开关

更新:2013-9-26 13:21:15      点击:
  • 产品品牌   
  • 产品型号   HRW10
  • 产品描述

    HRW10跌落式开关,是上海人民电气有限公司 http://www.shamandq.com 为您提供的关于HRW10跌落式开关型号,HRW10跌落式开关价格,有关HRW10跌落式开关的相关资料,上海...

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被广泛应用于12kV/15KV配电线路和配电变压器一次侧作为保护和进行设备投、切操作之用。?? 主要分为:陶瓷跌落式开关跟硅橡胶跌落式开关,主要型号:RW3/RW7/RW9/RW10/RW11,硅橡胶隔离开关在型号前面加“H”,根据地区的不同,产品的外形也有所不同,随着现在技术的发展,现在硅橡胶跌落式开关用途广泛。?? 一般情况下不允许带负荷操作跌落式开关,只允许其操作空载设备(线路)。但在农网10kV配电线路分支线和额定容量小于200kVA的配电变压器允许按下列要求带负荷操作:?? (1) 操作时由两人进行(一人监护,一人操作),但必须戴经试验合格的绝缘手套,穿绝缘靴、戴护目眼镜,使用电压等级相匹配的合格绝缘棒操作,在雷电或者大雨的气候下禁止操作。?? (2) 在拉闸操作时,一般规定为先拉断中间相,再拉背风的边相,最后拉断迎风的边相。这是因为配电变压器由三相运行改为两相运行,拉断中间相时所产生的电弧火花最小,不致造成相间短路。其次是拉断背风边相,因为中间相已被拉开,背风边相与迎风边相的距离增加了一倍,即使有过电压产生,造成相间短路的可能性也很小。最后拉断迎风边相时,仅有对地的电容电流,产生的电火花则已很轻微。?? (3) 合闸的时候操作顺序拉闸时相反,先合迎风边相,再合背风的边相,最后合上中间相。?? (4) 操作熔管是一项频繁的项目,注意不到便会造成触头烧 伤引起接触不良,使触头过热,? 弹簧退火,促使触头接触更为不良,形成恶性循环。
.适用于环境温度上限40℃,下限-30℃之内。 2.海拔不超过1000m,风速不大于35m/s 3.熔断器不适用于下述场所 3.1有燃料或爆炸危险的场所。 3.2有剧烈震动或冲击的场所。? 3.3有异电化学气体作用及严重空气污秽,烟雾地区。

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