MX9700488A - Aparato y metodo para medir una corriente alterna la cual satura el nucleo de un transformador de corriente. - Google Patents

Aparato y metodo para medir una corriente alterna la cual satura el nucleo de un transformador de corriente.

Info

Publication number
MX9700488A
MX9700488A MX9700488A MX9700488A MX9700488A MX 9700488 A MX9700488 A MX 9700488A MX 9700488 A MX9700488 A MX 9700488A MX 9700488 A MX9700488 A MX 9700488A MX 9700488 A MX9700488 A MX 9700488A
Authority
MX
Mexico
Prior art keywords
current
core
electrical degrees
measurements
saturates
Prior art date
Application number
MX9700488A
Other languages
English (en)
Other versions
MXPA97000488A (es
Inventor
John Herman Blakely
Original Assignee
Eaton Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eaton Corp filed Critical Eaton Corp
Publication of MX9700488A publication Critical patent/MX9700488A/es
Publication of MXPA97000488A publication Critical patent/MXPA97000488A/es

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

El rango dinámico de un transformador de corriente (CT) (17) es incrementado sin reducir el escalamiento de mediciones en el extremo bajo del rango dinámico diseñando el nucleo (19) del CT (17) para saturarse unicamente después de alrededor de 90 degree eléctricos de la máxima corriente por medirse. Las mediciones tomadas durante estos primeros 90 degree eléctricos antes de que se sature el nucleo son duplicadas para en efecto sumar mediciones que representan la imagen de espejo de los primeros 90 degree eléctricos. La temporizacion de las muestras digitalizadas tomadas durante los primeros 90 degree eléctricos es ajustada para tomar en cuenta los errores por la energía de restablecimiento de nucleo, determinando la tasa de cambio de la corriente justo después de un cruce en cero y seleccionado un valor determinado empíricamente de corriente para temporizar el inicio de las muestras de medicion.
MXPA/A/1997/000488A 1996-01-31 1997-01-17 Aparato y metodo para medir una corriente alternala cual satura el nucleo de un transformador decorriente MXPA97000488A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08594977 1996-01-31
US08/594,977 US5652507A (en) 1996-01-31 1996-01-31 Apparatus and method for measuring an AC current which saturates the core of a current transformer

Publications (2)

Publication Number Publication Date
MX9700488A true MX9700488A (es) 1997-07-31
MXPA97000488A MXPA97000488A (es) 1997-12-01

Family

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Also Published As

Publication number Publication date
EP0788122A2 (en) 1997-08-06
AU711221B2 (en) 1999-10-07
BR9700166A (pt) 1998-09-29
CA2192588A1 (en) 1997-08-01
ZA97790B (en) 1997-08-04
EP0788122A3 (en) 1997-11-05
JPH09222439A (ja) 1997-08-26
US5652507A (en) 1997-07-29
AU1002097A (en) 1997-08-07
TW332256B (en) 1998-05-21
KR970059744A (ko) 1997-08-12

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