FR2340638A1 - Overvoltage protection system - limits switching voltages using vacuum cell for switched power transformer tappings - Google Patents

Overvoltage protection system - limits switching voltages using vacuum cell for switched power transformer tappings

Info

Publication number
FR2340638A1
FR2340638A1 FR7703266A FR7703266A FR2340638A1 FR 2340638 A1 FR2340638 A1 FR 2340638A1 FR 7703266 A FR7703266 A FR 7703266A FR 7703266 A FR7703266 A FR 7703266A FR 2340638 A1 FR2340638 A1 FR 2340638A1
Authority
FR
France
Prior art keywords
power transformer
overvoltage protection
vacuum cell
protection system
switched power
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
FR7703266A
Other languages
French (fr)
Other versions
FR2340638B3 (en
Inventor
Arno Pichler
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.)
Maschinenfabrik Reinhausen GmbH
Original Assignee
Maschinenfabrik Reinhausen GmbH
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 Maschinenfabrik Reinhausen GmbH filed Critical Maschinenfabrik Reinhausen GmbH
Publication of FR2340638A1 publication Critical patent/FR2340638A1/en
Application granted granted Critical
Publication of FR2340638B3 publication Critical patent/FR2340638B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H02H7/055—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers for tapped transformers or tap-changing means thereof

Abstract

A method is used for providing overvoltage protection for the terminals of a tapped transformer and it protects the switches when a load is switched from one power transformer tapping terminal to another, and it may be arranged in several slightly different alternative forms. A power transformer winding (1) has tappings (2, 3) which may be switched alternatively to a load line (7) via a gauged switch (5, 6). To prevent voltage overload during switching, a vacuum cell (12) and resistances (8, 9), together with switch contacts (10, 11) gauged to the main switch (5, 6) are incorporated in the circuit, so that a discharge in the cell prevents voltages above a certain defined value developing. A voltage dependent resistance (14) may be incorporated in the circuit.
FR7703266A 1976-02-05 1977-02-04 Overvoltage protection system - limits switching voltages using vacuum cell for switched power transformer tappings Granted FR2340638A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762604344 DE2604344A1 (en) 1976-02-05 1976-02-05 STEPPED TRANSFORMER WITH OVERVOLTAGE PROTECTION DEVICE

Publications (2)

Publication Number Publication Date
FR2340638A1 true FR2340638A1 (en) 1977-09-02
FR2340638B3 FR2340638B3 (en) 1979-10-05

Family

ID=5969054

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703266A Granted FR2340638A1 (en) 1976-02-05 1977-02-04 Overvoltage protection system - limits switching voltages using vacuum cell for switched power transformer tappings

Country Status (3)

Country Link
JP (1) JPS5296315A (en)
DE (1) DE2604344A1 (en)
FR (1) FR2340638A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389987A1 (en) * 1977-05-06 1978-12-01 Reinhausen Kg Maschf Transformer with tappings switched by stepping switch - has voltage dependent resistors in series with ohmic resistors in groups limiting surge currents
FR2477761A1 (en) * 1980-03-04 1981-09-11 Reinhausen Kg Maschf Overload protection for transformer stepping switch - includes spark gap and fuse assembly in series with load dependent resistance between tappings

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311333U (en) * 1989-06-14 1991-02-04
DE4124431C2 (en) * 1990-08-16 1997-07-24 Siemens Ag Protective circuit for switching contacts of a transformer tap changer
DE202009018524U1 (en) 2009-10-08 2012-01-31 Maschinenfabrik Reinhausen Gmbh step switch
DE102010007534A1 (en) 2010-02-11 2011-08-11 Maschinenfabrik Reinhausen GmbH, 93059 step switch
DE102010007535B4 (en) 2010-02-11 2017-12-21 Maschinenfabrik Reinhausen Gmbh Tap-changer with freewheeling element
DE102010019948B4 (en) 2010-05-08 2015-06-11 Maschinenfabrik Reinhausen Gmbh OLTC
DE102010024326A1 (en) 2010-06-18 2011-12-22 Maschinenfabrik Reinhausen Gmbh step switch
DE102010024327B4 (en) 2010-06-18 2014-12-11 Maschinenfabrik Reinhausen Gmbh step switch
DE202010017377U1 (en) 2010-06-18 2012-01-03 Maschinenfabrik Reinhausen Gmbh OLTC
DE102010024612B4 (en) 2010-06-22 2015-06-03 Maschinenfabrik Reinhausen Gmbh step switch
DE102012107446B4 (en) * 2012-08-14 2015-12-31 Maschinenfabrik Reinhausen Gmbh Diverter switch, on-load tap-changer and method of switching an on-load tap-changer
DE102018113982B4 (en) * 2018-06-12 2023-09-28 Maschinenfabrik Reinhausen Gmbh LOAD TAP SWITCH AND METHOD FOR ACTUATING A LOAD TAP SWITCH

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389987A1 (en) * 1977-05-06 1978-12-01 Reinhausen Kg Maschf Transformer with tappings switched by stepping switch - has voltage dependent resistors in series with ohmic resistors in groups limiting surge currents
FR2477761A1 (en) * 1980-03-04 1981-09-11 Reinhausen Kg Maschf Overload protection for transformer stepping switch - includes spark gap and fuse assembly in series with load dependent resistance between tappings

Also Published As

Publication number Publication date
JPS5296315A (en) 1977-08-12
FR2340638B3 (en) 1979-10-05
DE2604344A1 (en) 1977-08-18

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