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ES2125203A1 - Device for neutral-continuity supervision and protection against operating overvoltages - Google Patents

Device for neutral-continuity supervision and protection against operating overvoltages

Info

Publication number
ES2125203A1
ES2125203A1 ES09701453A ES9701453A ES2125203A1 ES 2125203 A1 ES2125203 A1 ES 2125203A1 ES 09701453 A ES09701453 A ES 09701453A ES 9701453 A ES9701453 A ES 9701453A ES 2125203 A1 ES2125203 A1 ES 2125203A1
Authority
ES
Spain
Prior art keywords
neutral
supervision
continuity
protection
protection against
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
ES09701453A
Other languages
Spanish (es)
Other versions
ES2125203B1 (en
Inventor
Murcia Jose F Martinez-Canales
Bel Carlos Alvarez
Porta Carlos Roldan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iberdrola SA
Original Assignee
Iberdrola SA
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 Iberdrola SA filed Critical Iberdrola SA
Priority to ES9701453A priority Critical patent/ES2125203B1/en
Publication of ES2125203A1 publication Critical patent/ES2125203A1/en
Application granted granted Critical
Publication of ES2125203B1 publication Critical patent/ES2125203B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

Device for neutral-continuity supervision and protection against operating overvoltages, which consists of an electronic device 1 processing the voltage signals which is connected to a low-voltage three-phase network with neutral, and measures the single voltages V1, V2, V3 and the associated homopolar voltage V3, sending them to a programmable control element 2 which, by means of an algorithm, carries out the functions of activating an alarm or protection output when it detects imbalances in the simple voltages due to breakdown in the neutral conductor or in any of the phases, activating a protection output when it detects an inadmissible overvoltage on any of the phases, and reconnecting following a breakdown after testing the voltages, the protection being a switch/contactor with electrical control. Applicable in electricity distribution.
ES9701453A 1997-06-30 1997-06-30 NEUTRAL CONTINUITY SUPERVISION DEVICE AND SERVICE SURGE PROTECTION. Expired - Fee Related ES2125203B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9701453A ES2125203B1 (en) 1997-06-30 1997-06-30 NEUTRAL CONTINUITY SUPERVISION DEVICE AND SERVICE SURGE PROTECTION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9701453A ES2125203B1 (en) 1997-06-30 1997-06-30 NEUTRAL CONTINUITY SUPERVISION DEVICE AND SERVICE SURGE PROTECTION.

Publications (2)

Publication Number Publication Date
ES2125203A1 true ES2125203A1 (en) 1999-02-16
ES2125203B1 ES2125203B1 (en) 1999-10-01

Family

ID=8299899

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9701453A Expired - Fee Related ES2125203B1 (en) 1997-06-30 1997-06-30 NEUTRAL CONTINUITY SUPERVISION DEVICE AND SERVICE SURGE PROTECTION.

Country Status (1)

Country Link
ES (1) ES2125203B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743889A (en) * 1971-12-16 1973-07-03 Hatch Inc Polyphase electric system protective apparatus
US3848160A (en) * 1973-05-21 1974-11-12 Gen Electric Canada Circuit for detecting phase unbalance in a three phase supply
US4104687A (en) * 1976-11-24 1978-08-01 S&C Electric Company Device for detecting unbalanced conditions in a polyphase equipment bank
US4210948A (en) * 1978-06-15 1980-07-01 Allen-Bradley Company Method and apparatus for monitoring line voltage in a polyphase source
US5642003A (en) * 1995-08-22 1997-06-24 Electric Power Research Institute, Inc. Power system switch incorporating a positive-sequence fundamental signal magnitude detector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743889A (en) * 1971-12-16 1973-07-03 Hatch Inc Polyphase electric system protective apparatus
US3848160A (en) * 1973-05-21 1974-11-12 Gen Electric Canada Circuit for detecting phase unbalance in a three phase supply
US4104687A (en) * 1976-11-24 1978-08-01 S&C Electric Company Device for detecting unbalanced conditions in a polyphase equipment bank
US4210948A (en) * 1978-06-15 1980-07-01 Allen-Bradley Company Method and apparatus for monitoring line voltage in a polyphase source
US5642003A (en) * 1995-08-22 1997-06-24 Electric Power Research Institute, Inc. Power system switch incorporating a positive-sequence fundamental signal magnitude detector

Also Published As

Publication number Publication date
ES2125203B1 (en) 1999-10-01

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Legal Events

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EC2A Search report published

Date of ref document: 19990216

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