Current and/or voltage sensor device with a memory element

Patent metadata

Field	Value
Publication number	US-10161972-B2
Application number	US-201514667089-A
Country	US
Kind code	B2
Filing date	Mar 24, 2015
Priority date	Sep 24, 2012
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A voltage and or current sensor device for use in medium- or high voltage application, wherein a sensor or sensors of the sensor device is or are arranged in a housing. To enhance communication between the sensor and an electronical device, in order to use maximum possible accuracy potential of the voltage and current sensors, a signal and/or data memory element is integrated in the sensor housing, or placed near the sensor such that the sensor device output signal can be directly evaluated.

First claim

The invention claimed is:

1. A voltage sensor device, comprising:
at least one voltage sensor, wherein the sensor or sensors of the sensor device is or are arranged in a sensor housing;
a signal and/or data memory element;
information about a correction factor or actual transformation ratio of the sensor stored in the memory element;
a connector configured to connect a measuring device to the voltage sensor device;
one or more first wires connected to the sensor and the connector to output a sensor signal to the measuring device;
one or more second wires connected to the memory element and the connector to transfer the information about the correction factor or actual transformation ratio to the measuring device;
a primary impedance element of a voltage divider of the voltage sensor, placed in the sensor housing; and
a secondary impedance element of the voltage divider of the voltage sensor, placed or integrated in the connector or a boot thereof.

2. The voltage sensor device according to claim 1 , wherein the sensor housing or the sensor device housing is made of a resin, or of plastic with a filling of insulating material.

3. The voltage sensor device according to claim 1 , wherein the voltage sensor device is equipped with a signal cable connector, and that the memory element is integrated in the signal cable connector equipped at the end of the output cable of the sensor device.

4. The voltage sensor device according to claim 3 , wherein the device comprises:
a clamp-on connector boot for fixation for a cable and RJ45 connector.

5. The voltage sensor device according to claim 1 , wherein the memory element is within a housing made of insulating material.

6. The voltage sensor device according to claim 1 , wherein the memory element is within a housing made of semiconductive material.

7. The voltage sensor device according to claim 1 , wherein the memory element is within a housing made of conductive material.

8. The voltage sensor device according to claim 1 , wherein the memory element is an Electrically Erasable Programmable Read-Only Memory (EEPROM) element, which is provided with correction and/or calibration factors of the sensors and/or with additional data, in addition to storing measurement data.

9. The voltage sensor device according to claim 2 , wherein the voltage sensor device is equipped with a signal cable connector, and that the memory element is integrated in the signal cable connector equipped at the end of the output cable of the sensor device.

10. The voltage sensor device according to claim 9 , wherein the device comprises:
a clamp-on connector boot for fixation for a cable and RJ45 connector.

11. The voltage sensor device according to claim 10 , wherein the memory element is within a housing made of insulating material.

12. The voltage sensor device according to claim 10 , wherein the memory element is within a housing made of semiconductive material.

13. The voltage sensor device according to claim 10 , wherein the memory element is within a housing made of conductive material.

14. The voltage sensor device according to claim 10 , wherein the memory element is an Electrically Erasable Programmable Read-Only Memory (EEPROM) element, which is provided with correction and/or calibration factors of the sensors and/or with additional data, in addition to storing measurement data.

15. The voltage sensor device according to claim 1 , wherein the memory element is integrated in the sensor housing, or placed in a cavity in the sensor housing.

Assignees

• Abb Technology Ag
• Abb Schweiz Ag

Inventors

• Javora Radek
• Pavlas Marek
• Hozoi Adrian
• Podzemny Jaromir

Classifications

• G01R19/00

  Arrangements for measuring currents or voltages or for indicating presence or sign thereof (G01R5/00 takes precedence; for measuring bioelectric currents or voltages A61B5/24) · CPC title

• G01R35/005 Primary

  Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references (G01R33/0035, G01R35/002 take precedence) · CPC title

• G01R19/155

  Indicating the presence of voltage · CPC title

• G01R19/15

  Indicating the presence of current · CPC title

• G01R19/0046 Primary

  characterised by a specific application or detail not covered by any other subgroup of G01R19/00 · CPC title