WO2017186456A1 - Dispositif de protection électrique - Google Patents

Dispositif de protection électrique Download PDF

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Publication number
WO2017186456A1
WO2017186456A1 PCT/EP2017/057911 EP2017057911W WO2017186456A1 WO 2017186456 A1 WO2017186456 A1 WO 2017186456A1 EP 2017057911 W EP2017057911 W EP 2017057911W WO 2017186456 A1 WO2017186456 A1 WO 2017186456A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
protection device
insulator
column
electrical
Prior art date
Application number
PCT/EP2017/057911
Other languages
German (de)
English (en)
Inventor
Bernd RÄTH
Mariusz ROHMANN
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2017186456A1 publication Critical patent/WO2017186456A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H01H31/30—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact actuated through the movement of one or more insulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/16—Series resistor structurally associated with spark gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
    • H02B5/01—Earthing arrangements, e.g. earthing rods
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/044—Physical layout, materials not provided for elsewhere
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • 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

Definitions

  • the invention relates to an electrical protection device comprising a grounding switch and a surge arrester.
  • the invention relates to such electrical protection devices for transformers.
  • Earthing switches grounded electrical equipment parts.
  • Surge arresters are used to limit overvoltages in electrical lines and equipment.
  • the invention has for its object to provide an improved electrical protection device comprising at least one earthing switch and a surge arrester.
  • An electrical protection device comprises a grounding switch, a surge arrester with an electrically insulating arrester housing, a current transformer and a spark gap arranged between the current transformer and the surge arrester.
  • the earthing switch has two electrical contact terminals, two insulator columns, on each of which one of the contact terminals is arranged, and at least one movable contact element for producing egg ⁇ nes electrical switching contact between the contact terminals.
  • the arrester housing is a first insulator column of the earthing switch.
  • the surge arrester is integrated in the earthing switch by an isolator column of the earthing switch. also forms an arrester housing of the overvoltage ⁇ Abieiters.
  • the manufacturing costs of the protection device are reduced since no separate arrester housing is required for the surge arrester.
  • the dimensions and thus the space requirement of the protective device are reduced, since the surge arrester is arranged in an already required insulator column of the grounding switch.
  • the assembly effort for on-site installation of the protective device is advantageously reduced by the component reduction.
  • Arrester connection of the surge arrester is.
  • This refinement of the invention eliminates both a separate arrester connection of the surge arrester and an electrical connection of an arrester connection of the surge arrester to the earthing switch, thereby further advantageously reducing the manufacturing costs of the protection device and the assembly effort for their on-site assembly.
  • a further embodiment of the invention provides that a second electrical contact connection of the grounding switch is permanently connected to a movable contact element. Therefore, the movable contact element via the second contact terminal of the earthing switch can be electrically contacted duration ⁇ way, for example via a cable connection.
  • a further embodiment of the invention provides a motor drive for moving at least one contact element. Since ⁇ by the switching contact can advantageously be automated and safe to use made by a motor-driven movement of a contact element.
  • the electrical protection device has exactly one movable contact ⁇ element, which connects the switch contact between her forthcoming first switching position, in which it connects the two contact terminals with each other, and a switch ⁇ contact interrupting second Switching position is movable.
  • a first contact connection is preferably arranged fixedly on the first insulator column. This embodiment of the invention thus provides only a movable contact element for opening and closing of the switching contact, whereby a particularly simple and cost-effective design of the protection ⁇ device is achieved.
  • a first further embodiment of the aforementioned embodiment of the invention provides that the contact element is firmly connected to egg ⁇ ner second insulator column of the earthing switch and the second insulator column is rotatably gela ⁇ siege about its longitudinal axis, so that the contact element by rotations of the second insulator column between the two Switch positions is movable.
  • An alternative further embodiment provides that the contact element is pivotally mounted on a second insulator column of the earthing switch, so that the contact ⁇ element is movable by pivoting between the two switching positions. In both refinements, the contact element is arranged on the second insulator column.
  • the refinements at ⁇ differ in that the contact element is moved indirectly by rotations of the second insulator column in the first case, while it is moved directly in the second case.
  • An indirect movement of the Kunststoffele- mentes is particularly advantageous when the direct Be ⁇ movement is technically difficult or costly.
  • the first insulator column can be arranged above the second insulator column, whereby a vertical construction of the protective device is made possible.
  • a further embodiment of the invention provides that the electrical protection device comprises two movable contact elements, which between a first switching position, in the they touch and connect the two contact terminals with each other, and a switching position interrupting the second switching position are movable.
  • This embodiment of the invention thus provides for two movable contact elements for the production of the switching contact. Compared to only one movable contact element, the switching speed can thereby be advantageously increased if necessary by both contact elements are moved simultaneously.
  • a further embodiment of the aforementioned embodiment of the invention provides that a first contact element is fixedly connected to the first insulator column, the second contact ⁇ element is firmly connected to a second insulator column of the earthing ⁇ switch and the first insulator column and the second insulator column each about its longitudinal axis are rotatably gela ⁇ siege, so that the contact elements are movable by rotations of the first insulator column and the second insulator column between the two switching positions.
  • This further embodiment of the invention therefore provides for an indirect movement of the two contact elements by rotation of the insulator pillars connected to them.
  • both insulator columns can advantageously be moved by a common drive, so that no two separate drives are required and the movement of the contact elements can be synchronized in a simple manner.
  • a transformer according to the invention comprises an inventive electrical protection device with the above already ge ⁇ called advantages.
  • FIG. 5 shows a transformer with an electrical protection device.
  • the protective device 1 shows a first embodiment of a electrical ⁇ rule protection device 1 in a side view.
  • the protective device 1 comprises a grounding switch 3, a surge arrester 5, a current transformer 50 and a spark gap 56 arranged between the current transformer 50 and the surge arrester 5.
  • the earthing switch 3 has two electricalticiananschlüs ⁇ se 7, 9 and a movable contact element 11 for producing an electrical switching contact between the contact terminals 7, 9.
  • a first contact terminal 7 is fixedly arranged on a first insulator column 15.
  • Theschreibele ⁇ ment 11 is fixedly connected to a second insulator column 17 and formed as an electrically conductive contact arm, which at an angle of for example 90 degrees to a
  • the insulator columns 15, 17 are spaced from each other on a support 19, wherein the longitudinal axes of the Isola ⁇ torciclen 15, 17 are parallel to each other.
  • the carrier 19 is mounted on a support 21.
  • the second insulator column 17 is rotatably mounted about its longitudinal axis, so that the contact element 11 is movable by rotations of the second insulator column between two switching positions. In a first switching position shown in Figure 1, the contact element 11 connects the twomaschineanschlüs ⁇ se 7, 9 together and thereby provides an electrical switching contact between the contact terminals 7, 9 ago.
  • the second insulator column 17 is rotated relative to the first switching position about its longitudinal axis, for example by about 90 degrees, so that the contact ⁇ element 11 does not touch the first contact terminal 7 and the switching contact between the contact terminals 7, 9 interrupts.
  • the rotation of the second insulator column 17 and thus also the movement of the contact element 11 is effected by a motor drive 23.
  • the motor drive 23 comprises a fixed to the support 21 electric motor 25, a drive rod 27 and a gear 29.
  • the motor 25 sets the drive rod 27 in rotation about its longitudinal axis, which are translated by the gear 29 in rotations of the second insulator column 17 about its longitudinal axis.
  • the first contact terminal 7 has, for example, a groove for receiving one end of the contact element 11.
  • the protection device 1 driving is applied to the first contact terminal 7, for example via a first connection cable 31, typically a high voltage, while the switching contact between the contact terminals 7, 9 is not closed.
  • the second contact terminal 9 is permanently electrically connected to the Kunststoffele ⁇ element 11 and arranged for example directly on the contact element. 11 Is applied to the second contact terminal 9, for example via a second Noiseka ⁇ bel 33, a ground potential, so that the firsttechnisch ⁇ circuit 7 can be grounded through the preparation of the switching contact with the two ⁇ th contact terminal.
  • the surge arrester 5 is integrated with the grounding switch 3 in that the first insulator pillar 15 of the grounding scarf ⁇ ters 3 also forms a trap body of the surge arrester. 5 Furthermore, the first electrical contact terminal 7 of the grounding switch 3 is also a surge arrester of the surge arrester 5.
  • the current transformer 50 is arranged on the carrier 19.
  • the spark gap 56 between the current transformer 50 and the surge arresters 5 is a discharge space between two electrodes 52, 54, wherein a first electrode 52 with the ers ⁇ th electrical contact terminal 7 and above with the surge arresters 5 is connected and the second electrode 54 is connected to the current transformer 50.
  • Figure 2 shows a second embodiment of an electrical ⁇ rule protection device 1 in a side view.
  • the protective device 1 comprises a grounding switch 3, an overvoltage arrester 5, a current transformer 50 and a spark gap 56 arranged between the current transformer 50 and the surge arrester 5.
  • the earthing switch 3 has two electrical contact terminals 7, 9 and a movable contact element 11 for producing an electrical switching contact between the contact terminals 7, 9.
  • a first contact terminal 7 is fixedly arranged on a first insulator column 15.
  • the Kunststoffele ⁇ ment 11 is pivotally mounted on a second insulator column 17 of the earthing switch 5 and formed as an electrically leitfähi ⁇ ger contact.
  • the second insulator column 17 is fixedly arranged on a carrier 19.
  • the first insulator ⁇ column 15 is disposed over the second insulating column 17, wherein the longitudinal axes of the insulator pillars 15, 17 on an overall raden lie.
  • the carrier 19 is mounted on a support 21.
  • the second contact terminal 9 is permanently connected to the contact ⁇ element 11 electrically connected.
  • the contact element 11 and the contact terminal 9 are pivotable between two switching positions. In a first switching position, the contact element 11 connects the two contact terminals 7, 9 with each other and thereby establishes an electrical switching contact between the contact terminals 7, 9, wherein the longitudinal axis of the
  • Contact element 11 is completely or almost parallel to the longitudinal axes of the insulator columns 15, 17.
  • the contact element 11 is in ei ⁇ nem angle of for example 90 degrees to the longitudinal axis of the second insulator column 17 from the second insulator column 17, so that the contact element 11 does not touch the first contact terminal 7 and the switching contact between themaschinean ⁇ circuits 7, underbicht. 9
  • the contact element 11 is supported by a support insulator 35.
  • the pivoting of the contact element 11 is effected by a motor ⁇ drive 23.
  • the motor drive 23 includes a fixed on the support 21 electric motor 25, a drive rod 27 and a gear 29 for pivoting the Kunststoffele- ments 11 of the motor rotates 25, the drive rod 27 in Dre ⁇ relationships about its longitudinal axis, which in through the gearbox 29 Swivels of the contact element 11 are translated.
  • a high voltage is typically present at the first contact terminal 7, for example via a first terminal box 31, as long as the switching contact between the contact terminals 7, 9 is not closed.
  • a ground potential is typically present at the second contact terminal 9, for example, via a second connecting cable 33, so that the first contact terminal 7 by manufacturing the
  • Switching contact with the second contact terminal 9 can be grounded.
  • the surge arrester 5 is integrated in the grounding switch 3 in that the first insulator pillar 15 of the grounding scarf ⁇ ters 3 also forms a trap body of the surge arrester. 5 Further, the first electrical contact terminal 7 of the grounding switch 3, a surge arrester of the surge arrester 5.
  • the current transformer 50 is arranged on the carrier 19.
  • the spark gap 56 between the current transformer 50 and the surge arresters 5 is a discharge space between two electrodes 52, 54, wherein a first electrode 52 with the ers ⁇ th electrical contact terminal 7 and above with the surge arresters 5 is connected and the second electrode 54 is connected to the current transformer 50.
  • Figure 3 shows a third embodiment of an electrical ⁇ rule protection device 1 in a side view.
  • the protective device 1 comprises a grounding switch 3, an overvoltage arrester 5, a current transformer 50 and a spark gap 56 arranged between the current transformer 50 and the surge arrester 5.
  • the grounding switch 3 has two electrical contact terminals 7, 9 and two movable contact elements 11, 13 for producing an electrical switching contact between the contact terminals 7, 9.
  • a first contact element 11 is fixedly connected to a first insulator column 15.
  • the second contact element 13 is fixedly connected to a second insulator column 17.
  • the first contact element 11 is permanently connected electrically to a first contact connection 7, and the second contact element 13 is permanently connected to the second contact connection 9.
  • Each Jardinele ⁇ ment 11, 13 is formed as an electrically conductive contact arm which protrudes at an angle of, for example, 90 degrees to a longitudinal axis of the respective insulator column 15, 17 thereof.
  • the insulator columns 15, 17 are spaced from each other on a support 19, wherein the longitudinal ⁇ axes of the insulator columns 15, 17 are parallel to each other.
  • the carrier 19 is mounted on a support 21.
  • Each insulator column 15, 17 is rotatably mounted about its longitudinal axis ge ⁇ , so that the contact elements 11, 13 by rotations the insulator columns 15, 17 are movable between two switching positions.
  • a first switching position shown in Figure 3 the ends of the contact elements 11, 13 and connect the two contact terminals 7, 9 electrically to each other and thereby provide an electrical switching contact between the contact terminals 7, 9 ago.
  • each insulator column 15, 17 is rotated relative to the first switching position about its longitudinal axis, for example, ⁇ about 90 degrees, so that the contact elements 11, 13 do not touch and break the switching contact between the terminals ⁇ 7, 9.
  • the rotations of the two insulator columns 15, 17 are effected by a common motor drive 23.
  • the motor drive 23 comprises an electric motor 25 fastened to the support 21, a drive rod 27 and a gear 29.
  • the motor 25 rotates the drive rod 27 in rotation about its longitudinal axis Rotations of the insulator columns 15, 17 are translated.
  • One end of the first contact element 11 has, for example, a groove for receiving one end of the second contact element 13.
  • the protection device 1 a high voltage is applied to the first contact terminal 7, for example via a first connection cable 31 to ⁇ , typically on while the switching contact between the contact terminals 7, 9 is not closed.
  • a Erdpoten- is applied to the second contact terminal 9, wherein ⁇ play, via a second connecting cable 33, TiAl, so that the first contact terminal 7 can be grounded through herstel ⁇ development of the switching contact with said second contact terminal.
  • the surge arrester 5 is integrated in the grounding switch 3 in that the first insulator pillar 15 of the grounding scarf ⁇ ters 3 also forms a trap body of the surge arrester. 5 Further, the first electrical contact terminal 7 of the grounding switch 3, a surge arrester of the surge arrester 5.
  • the current transformer 50 is arranged on the carrier 19.
  • the spark gap 56 between the current transformer 50 and the surge arresters 5 is a discharge space between two electrodes 52, 54, wherein a first electrode 52 with the ers ⁇ th electrical contact terminal 7 and above with the surge arresters 5 is connected and the second electrode 54 is connected to the current transformer 50.
  • Figure 4 shows a fourth embodiment of an electrical protection device 1 ⁇ rule with an earthing switch 3 and a surge arrester 5 in a side view.
  • This embodiment differs from the embodiment shown in Figure 3 essentially only in that the two insulator columns 15, 17 are arranged in a V-shape on the support 19, ie, the longitudinal axes of the Isola ⁇ torciclen 15, 17 form a non-vanishing angle with each other and the ends of the insulator columns 15, 17 facing away from the carrier 19 have a greater distance from one another than the ends facing the carrier 19.
  • the embodiment shown in Figure 4 corresponds to the embodiment shown in Figure 3.
  • the grounding switch 3 has two movable contact elements 11, 13 for producing an electrical switching contact between two contact terminals 7, 9, wherein each contact element 11, 13 is fixedly connected to an insulator column 15, 17, which is rotatable about its longitudinal axis by a motor drive 23 , Further, the surge absorber 5 is integrated in the grounding switch 3, a first insulating column 15 of the 7 of the He is ⁇ dung switch 3, a trap body of the surge ⁇ abieiters 5 forms, and a first contact terminal He ⁇ dung switch 3, a Ableiteran gleich the surge nungsableiters. 5
  • Figure 5 shows schematically an embodiment of a
  • Transformers 37 with an electrical protection device. 1 based on a circuit diagram.
  • the transformer 37 of this Auspar ⁇ tion example is three-phase with three primary windings 39.1 to 39.3, three secondary windings 41.1 to 41.3 and a transformer core 43 to which the primary windings 39.1 to 39.3 and secondary windings 41.1 to 41.3 are wound formed.
  • the primary windings 39.1 to 39.3 are interconnected by a delta connection.
  • the secondary windings 41.1 to 41.3 are interconnected by a star connection.
  • the protective device 1 can be designed as any of the embodiments described in Figures 1 to 4.
  • the first contact terminal 7 of the protection from ⁇ device 1 is electrically connected to a neutral point 45 of the star connection of the secondary windings 41.1 to 41.3.
  • the second contact terminal 9 is at a ground potential.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

L'invention concerne un dispositif de protection (1) électrique. Ce dispositif de protection (1) comprend un commutateur de mise à la terre (3) qui comprend deux bornes de contact (7, 9) électriques et au moins un élément de contact (11, 13) mobile pour établir un contact de commutation électrique entre les bornes de contact (7, 9), un dispositif de protection contre les surtensions (5) comprenant un boîtier électriquement isolant, un transformateur de courant (50) et un éclateur (56) agencé entre le transformateur de courant (50) et le dispositif de protection contre les surtensions (5). Le boîtier du dispositif de protection contre les surtensions constitue une première colonne isolante (15) du commutateur de mise à la terre (3).
PCT/EP2017/057911 2016-04-28 2017-04-04 Dispositif de protection électrique WO2017186456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207292.7 2016-04-28
DE102016207292.7A DE102016207292B4 (de) 2016-04-28 2016-04-28 Elektrische Schutzvorrichtung und Transformator mit einer solchen

Publications (1)

Publication Number Publication Date
WO2017186456A1 true WO2017186456A1 (fr) 2017-11-02

Family

ID=58489326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/057911 WO2017186456A1 (fr) 2016-04-28 2017-04-04 Dispositif de protection électrique

Country Status (2)

Country Link
DE (1) DE102016207292B4 (fr)
WO (1) WO2017186456A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114188864A (zh) * 2021-12-16 2022-03-15 深圳供电局有限公司 放电装置及变电站

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114203475A (zh) * 2021-12-03 2022-03-18 北京中车赛德铁道电气科技有限公司 一种带增强绝缘的动静触头结构的接地开关

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312796A (en) * 1965-06-11 1967-04-04 Ite Circuit Breaker Ltd Split corona shield for ground switch entry
EP0682393A2 (fr) * 1994-03-18 1995-11-15 Hitachi, Ltd. Installation de commutation à isolation par gaz comprimé
WO1997032317A1 (fr) * 1996-03-01 1997-09-04 Cooper Industries, Inc. Limiteur de surtension avec cloche isolante polymere, et procede associe
US20130092517A1 (en) * 2011-10-18 2013-04-18 Alstom Technology Ltd. Lightweight Conductor For Electrical Equipment And Electrical Equipment Including At Least One Such Conductor
WO2015067297A1 (fr) * 2013-11-05 2015-05-14 Abb Technology Ltd Parasurtenseur à ailettes moulées et appareil de moulage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001651A (en) 1975-05-05 1977-01-04 Mcgraw-Edison Company Station lightning arrester with dual rupture diaphragms for gas pressure release
JP2011166915A (ja) 2010-02-08 2011-08-25 Toshiba Corp 発変電所設備及び雷サージ吸収装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312796A (en) * 1965-06-11 1967-04-04 Ite Circuit Breaker Ltd Split corona shield for ground switch entry
EP0682393A2 (fr) * 1994-03-18 1995-11-15 Hitachi, Ltd. Installation de commutation à isolation par gaz comprimé
WO1997032317A1 (fr) * 1996-03-01 1997-09-04 Cooper Industries, Inc. Limiteur de surtension avec cloche isolante polymere, et procede associe
US20130092517A1 (en) * 2011-10-18 2013-04-18 Alstom Technology Ltd. Lightweight Conductor For Electrical Equipment And Electrical Equipment Including At Least One Such Conductor
WO2015067297A1 (fr) * 2013-11-05 2015-05-14 Abb Technology Ltd Parasurtenseur à ailettes moulées et appareil de moulage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114188864A (zh) * 2021-12-16 2022-03-15 深圳供电局有限公司 放电装置及变电站
CN114188864B (zh) * 2021-12-16 2023-09-19 深圳供电局有限公司 放电装置及变电站

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DE102016207292B4 (de) 2019-10-17

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