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公开(公告)号：US20150372468A1
公开(公告)日：2015-12-24
申请号：US14312671
申请日：2014-06-23
CPC分类号： H02G3/22 , H01B17/50 , H01F27/04 , H01F38/20 , H02B11/26 , H02B13/0356 , Y10T29/49021
摘要： A compact electrical bushing has a separate insulating end cap removably attached to the shaft of the bushing at an end used for mounting a current transformer. The removably attached insulating end cap has a large outer diameter that increases the linear surface distance of the bushing. The outer diameter may be determined in a predefined manner based on the desired length of the shaft, and vice versa, with a larger outer diameter corresponding to a shorter shaft. The increased linear surface distance allows the bushing to meet minimum tracking distance with a shorter shaft relative to existing bushings. The shorter shaft reduces the footprint of switchgear and other electrical isolation equipment to which the bushing may be connected. The insulating end cap may be removed from the bushing as needed to allow the current transformer to be slid onto the bushing without having to pass over the end cap.
摘要翻译： 紧凑的电气衬套具有分开的绝缘端帽，该绝缘端盖可拆卸地连接到衬套的轴，用于安装电流互感器。 可拆卸地安装的绝缘端盖具有大的外径，其增加了衬套的线性表面距离。 外径可以基于轴的期望长度以预定方式确定，反之亦然，具有对应于较短轴的较大外径。 增加的线性表面距离允许套管相对于现有衬套与较短的轴线达到最小跟踪距离。 较短的轴减小了开关柜和其他可以连接衬套的电气隔离设备的占地面积。 可以根据需要将绝缘端盖从衬套上移除，以允许电流互感器被滑动到衬套上，而不必通过端盖。
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公开(公告)号：US20160268783A1
公开(公告)日：2016-09-15
申请号：US14658221
申请日：2015-03-15
摘要： Method and apparatus for sealing an air vent in a switchgear cabinet provide a vent seal assembly having a vent seal cover and a set of linear guides on which the vent seal cover may be mounted. The vent seal cover and linear guides are housed within a casing attachable to an interior surface of the switchgear cabinet and directly over an air vent. Within the casing, the vent seal cover may slide freely along the linear guides toward the air vent, with no spring or other mechanical biasing mechanism to oppose the sliding of the cover. A catch on the casing releasably holds the vent seal cover to keep the air vent open during normal operating conditions. When an arc event occurs, pressure from the arc event knocks the vent seal cover free of the catch and propels it toward the air vent, quickly slamming the air vent shut.
摘要翻译： 用于密封开关柜中的通风口的方法和装置提供了一种排气密封组件，其具有通气密封盖和一组直线导轨，可安装排气密封盖。 通气密封盖和线性引导件容纳在可连接到开关柜的内表面并且直接在通风口上的壳体内。 在壳体内，通气密封盖可以沿直线引导件朝向排气口自由滑动，没有弹簧或其它机械偏置机构来抵抗盖的滑动。 壳体上的卡扣可释放地保持通气密封盖，以在正常操作条件下保持通气口打开。 当发生电弧事件时，来自电弧事件的压力会使排气密封盖无堵塞并将其推向空气通道，迅速砰击通风口关闭。
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