公开(公告)号：US20140306715A1

公开(公告)日：2014-10-16

申请号：US13860682

申请日：2013-04-11

Applicant: EATON CORPORATION

Inventor： VINCENT FERRI ,  Todd Lathrop

IPC: G01R31/02

CPC classification number: G01R31/024 ,  H02H5/105

Abstract: A circuit for indicating a broken or missing neutral in a split phase electrical distribution configuration having an unbalanced load includes: a voltage divider configured to divide the voltage difference between a first line and a second line and to output the divided voltage difference as a virtual neutral; a rectifier including an input of the virtual neutral, the neutral, and an output, the rectifier configured to rectify a voltage difference between the virtual neutral and the neutral; a determination circuit including an input of the rectified voltage difference, a reference voltage and an output, the determination circuit configured to determine if the neutral is missing or broken based on the rectified voltage difference and the reference voltage; and an indicator circuit configured to indicate when the neutral is missing or broken based on the output of the determination circuit.

Abstract translation: 用于指示具有不平衡负载的分相式配电配置中的断线或缺失中性线的电路包括：分压器，其被配置为将第一线路和第二线路之间的电压差分压，并将分压电压差输出为虚拟中性线 ; 整流器，其包括虚拟空档的输入，空档和输出，所述整流器被配置为对虚拟空档和空档之间的电压差进行校正; 确定电路，包括整流电压差的输入，参考电压和输出，所述确定电路被配置为基于整流的电压差和所述参考电压来确定所述中性点是否丢失或断开; 以及指示电路，其被配置为基于所述确定电路的输出来指示所述中性线何时丢失或断开。

公开(公告)号：US09335363B2

公开(公告)日：2016-05-10

申请号：US13860682

申请日：2013-04-11

Applicant: EATON CORPORATION

Inventor： Vincent Ferri ,  Todd Lathrop

IPC: G01R31/02 ,  H02H5/10

CPC classification number: G01R31/024 ,  H02H5/105

Abstract: A circuit for indicating a broken or missing neutral in a split phase electrical distribution configuration having an unbalanced load includes: a voltage divider configured to divide the voltage difference between a first line and a second line and to output the divided voltage difference as a virtual neutral; a rectifier including an input of the virtual neutral, the neutral, and an output, the rectifier configured to rectify a voltage difference between the virtual neutral and the neutral; a determination circuit including an input of the rectified voltage difference, a reference voltage and an output, the determination circuit configured to determine if the neutral is missing or broken based on the rectified voltage difference and the reference voltage; and an indicator circuit configured to indicate when the neutral is missing or broken based on the output of the determination circuit.

Abstract translation: 用于指示具有不平衡负载的分相式配电配置中的断线或缺失中性线的电路包括：分压器，其被配置为将第一线路和第二线路之间的电压差分压，并将分压电压差输出为虚拟中性线 ; 整流器，其包括虚拟空档的输入，空档和输出，所述整流器被配置为对虚拟空档和空档之间的电压差进行校正; 确定电路，包括整流电压差的输入，参考电压和输出，所述确定电路被配置为基于整流的电压差和所述参考电压来确定所述中性点是否丢失或断开; 以及指示电路，其被配置为基于所述确定电路的输出来指示所述中性线何时丢失或断开。