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1.发明授权
公开(公告)号：US4213090A
公开(公告)日：1980-07-15
申请号：US954383
申请日：1978-10-25
CPC分类号： G01R11/06
摘要： A voltage magnetic section of a watthour meter includes a voltage flux lagging loop formed integrally with a platform part directly attached to the voltage magnetic core. Light load adjustment members are movably mounted on the platform which also carries a manual operator for shifting the light load members to a predetermined position for proper operation in the meter.
摘要翻译： 电度表的电压磁场包括与直接连接到电压磁芯的平台部一体地形成的电压通量滞后回路。 轻负载调节构件可移动地安装在平台上，该平台还带有用于将轻负载构件移动到预定位置的手动操作器，以在仪表中正常操作。
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公开(公告)号：US4449094A
公开(公告)日：1984-05-15
申请号：US272244
申请日：1981-06-10
IPC分类号： G01R11/10 , G01R11/185 , G01R1/14
CPC分类号： G01R11/185 , G01R11/10
摘要： A temperature compensated magnetic damping assembly for providing a braking torque on an electroconductive disk of an induction device includes a pair of permanent magnets each having an easy axis of magnetization. Each permanent magnet provides two easy flux paths parallel to the easy axis of magnetization and separated by a dead zone. The permanent magnets are juxtaposed about a predetermined space through which the disk rotates such that the easy flux paths are perpendicular to the disk, and are aligned such that the magnetic flux passes twice through the disk in opposite directions. Flux return plates are provided adjacent to each of the permanent magnets so as to provide a flux path parallel to the disk and linking the two easy flux paths of each of the permanent magnets. In this configuration, a highly-efficient, substantially square magnetic flux loop is provided. One of the flux return plates is movable relative to the adjacent permanent magnet so as to provide series adjustment of the damping torque. Finally, a temperature sensitive magnetic shunting member extends from the north to the south pole, across the dead zone, of each of the permanent magnets so as to provide temperature compensation.
摘要翻译： 用于在感应装置的导电盘上提供制动转矩的温度补偿磁阻尼组件包括一对具有易磁化轴的永磁体。 每个永磁体提供两个容易的磁通路径，平行于容易的磁化轴并且被死区分开。 永久磁铁围绕盘旋转的预定空间并置，使得容易的磁通路径垂直于磁盘，并且对准，使得磁通量在相反方向上通过磁盘两次。 与每个永磁体相邻设置磁通返回板，以提供平行于磁盘的磁通路径，并且连接每个永磁体的两个易磁通路径。 在这种结构中，提供了一种高效的，基本上为方形的磁通回路。 一个回流板相对于相邻的永磁体是可移动的，以便提供阻尼扭矩的串联调整。 最后，一个温度敏感的磁分流元件从每个永久磁铁的北极向南极延伸穿过死区，以提供温度补偿。
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公开(公告)号：US4238729A
公开(公告)日：1980-12-09
申请号：US12915
申请日：1979-02-16
IPC分类号： G01D11/14 , G01R11/10 , G01R11/185 , G01R1/16
CPC分类号： G01D11/14 , G01R11/10 , G01R11/185
摘要： A magnetic damping system for induction devices having electroconductive disk armatures includes a low induction, high coercive force magnet that is vertically elongated and has a horizontal direction of magnetization parallel to the disk. Flux concentrating pole pieces adjoin the magnet pole faces for vertically directing two closely spaced braking magnetic fields from a pair of pole tips and into the disk. A temperature compensating arrangement covers the sides of the permanent magnet between the edges of the pole pieces to efficiently compensate for higher reversible temperature coefficients of magnet remanence.
摘要翻译： 具有导电盘电枢的感应装置的磁阻尼系统包括垂直伸长并具有平行于盘的磁化水平方向的低感应高矫顽力磁体。 磁通集中极片邻接在磁极面上，用于垂直地将两个紧密间隔的制动磁场从一对磁极尖端引导到磁盘中。 温度补偿装置覆盖极片边缘之间永磁体的侧面，以有效地补偿磁体剩磁的更高的可逆温度系数。
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公开(公告)号：US3943413A
公开(公告)日：1976-03-09
申请号：US485676
申请日：1974-07-03
申请人： Joseph M. Keever
发明人： Joseph M. Keever
CPC分类号： H02B1/063
摘要： A watthour meter of the self-contained detachable type has a protected meter testing arrangement. An isolated external test contact and an internal terminal blade connector are independently connected to a common terminal end of the meter voltage winding. The connector is manually disconnectable for testing the meter through the external test contact in an "open-link" watthour meter testing method.
摘要翻译： 独立式可拆卸式电度表具有受保护的仪表测试装置。 隔离的外部测试触点和内部端子叶片连接器独立地连接到仪表电压绕组的公共端子端。 连接器可手动断开，通过外部测试触点以“开放式”电度表测试方法进行测试。
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