公开(公告)号：US5045764A

公开(公告)日：1991-09-03

申请号：US507414

申请日：1990-04-05

申请人： Dieter Eller

发明人： Dieter Eller

IPC分类号： H01H51/00 ,  H02H7/085

CPC分类号： H02H7/0853 ,  H01H51/005

摘要： A monitoring circuit connected between a motor and a motor reversing switch is shown and described. The monitoring circuit has a current transformer connected to the power line to be measured, two secondary variable monitoring circuits for measuring the actual current value of the motor, and actual value analyzers for controlling the monitoring circuits. One of the secondary variable monitoring circuits is switched on while the other is switched off.

摘要翻译： 连接在电动机和电动机反向开关之间的监视电路被示出和描述。 监控电路具有连接到要测量的电力线的电流互感器，用于测量电动机的实际电流值的两个二次可变监控电路和用于控制监控电路的实际值分析器。 其中一个次级可变监控电路接通，另一个则关闭。

公开(公告)号：US4156262A

公开(公告)日：1979-05-22

申请号：US875078

申请日：1978-02-03

申请人： Fritz-Dieter Eller ,  Gunter Frohlich

发明人： Fritz-Dieter Eller ,  Gunter Frohlich

IPC分类号： H02P1/16 ,  H02H1/00 ,  H02H3/08 ,  H02H7/085 ,  H02H7/08

CPC分类号： H02H1/0007

摘要： An overload-protection circuit for an electric motor has a current transformer whose primary winding is connected in series with the windings of the motor to be protected while two secondary windings are provided. The first secondary winding is connected to an actual-value current-monitoring circuit while the second secondary winding forms part of a voltage-supply network for the circuit. The primary winding is subdivided into a plurality of winding sections having respective taps for different nominal values of the overload current. The product of the number of turns of each winding section and the nominal-current value of the respective tap (ampere-turns) is the same for each winding and the respective tap.

摘要翻译： 电动机的过载保护电路具有电流互感器，其一次绕组与被保护的电动机的绕组串联连接，同时提供两个次级绕组。 第一次级绕组连接到实际电流监测电路，而第二次级绕组构成电路的电压网络的一部分。 初级绕组被细分成具有用于不同额定值的过载电流的各个抽头的多个绕组部分。 每个绕组部分的匝数与各个抽头的额定电流值（安培匝数）的乘积对于每个绕组和相应的抽头是相同的。