公开(公告)号：MXPA02007467A

公开(公告)日：2004-07-16

申请号：MXPA02007467

申请日：2002-07-31

Applicant: ABB INC

Inventor： SHUEY KENNETH C

IPC: G01R11/24 ,  G01R27/00

Abstract: Un metodo para determinar el flujo de corriente directa a traves de un medidor de potencia de corriente alterna. La inpedancia interna de el transformador de distribucion es primero detectado, luego el voltaje de corriente directa en la forma de onda de voltaje de corriente alterna es medido y finalmente la medida de voltaje de corriente directa es convertida a corriente directa.

公开(公告)号：CA2396448A1

公开(公告)日：2003-02-02

申请号：CA2396448

申请日：2002-08-01

Applicant: ABB INC

Inventor： SHUEY KENNETH C

IPC: G01R11/24 ,  G01R22/00 ,  H02J3/00 ,  G01R19/06 ,  G01R27/16

Abstract: A method for determining the DC current flowing through an AC power meter. The internal impedance of the distribution transformer is first sensed, then the DC voltage in the AC voltage waveform is measured and finally the measured DC voltage is converted to DC current.

公开(公告)号：CA2396448C

公开(公告)日：2008-12-30

申请号：CA2396448

申请日：2002-08-01

Applicant: ABB INC

Inventor： SHUEY KENNETH C

IPC: G01R22/00 ,  G01R11/24 ,  G01R27/16 ,  H02J3/00

Abstract: A method for determining the DC current flowing through an AC power meter. The internal impedance of the distribution transformer is first sensed, then the DC voltage in the AC voltage waveform is measured and finally the measured DC voltage is converted to DC current.