NL1017797C2 - Een- of meerfasenschakelinrichting in een omhullende behuizing. - Google Patents

Een- of meerfasenschakelinrichting in een omhullende behuizing. Download PDF

Info

Publication number: NL1017797C2
Authority: NL; Netherlands
Prior art keywords: switching device; housing; moisture; air; switches
Prior art date: 2001-04-09

Application number

NL1017797A

Other languages

English (en)

Dutch (nl)

Inventor

Arend Jan Willem Lammers

Original Assignee

Holec Holland Nv

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.)

2001-04-09

Filing date

2001-04-09

Publication date

2002-10-10

2001-04-09 Priority to NL1017797A priority Critical patent/NL1017797C2/nl

2001-04-09 Application filed by Holec Holland Nv filed Critical Holec Holland Nv

2002-04-09 Priority to PCT/NL2002/000227 priority patent/WO2002082606A1/en

2002-04-09 Priority to NZ528730A priority patent/NZ528730A/en

2002-04-09 Priority to ES02722965T priority patent/ES2276932T3/es

2002-04-09 Priority to DK02722965T priority patent/DK1378040T3/da

2002-04-09 Priority to CZ20032726A priority patent/CZ20032726A3/cs

2002-04-09 Priority to HU0303852A priority patent/HUP0303852A2/hu

2002-04-09 Priority to BR0208760-0A priority patent/BR0208760A/pt

2002-04-09 Priority to JP2002580456A priority patent/JP2004522396A/ja

2002-04-09 Priority to DE60216435T priority patent/DE60216435T2/de

2002-04-09 Priority to CNB028115937A priority patent/CN100358199C/zh

2002-04-09 Priority to US10/474,372 priority patent/US7158369B2/en

2002-04-09 Priority to AU2002253710A priority patent/AU2002253710B2/en

2002-04-09 Priority to HRP20030814 priority patent/HRP20030814A2/xx

2002-04-09 Priority to CA002443803A priority patent/CA2443803A1/en

2002-04-09 Priority to AT02722965T priority patent/ATE347188T1/de

2002-04-09 Priority to EP02722965A priority patent/EP1378040B1/en

2002-04-09 Priority to PT02722965T priority patent/PT1378040E/pt

2002-04-09 Priority to EEP200300493A priority patent/EE200300493A/xx

2002-04-09 Priority to PL366369A priority patent/PL202714B1/pl

2002-04-09 Priority to YUP-879/03A priority patent/YU87903A/sr

2002-10-10 Application granted granted Critical

2002-10-10 Publication of NL1017797C2 publication Critical patent/NL1017797C2/nl

2003-10-08 Priority to NO20034501A priority patent/NO325499B1/no

Links

238000009413 insulation Methods 0.000 claims abstract description 17
239000003570 air Substances 0.000 claims description 36
230000004888 barrier function Effects 0.000 claims description 14
238000009434 installation Methods 0.000 claims description 10
238000005192 partition Methods 0.000 claims description 6
230000000149 penetrating effect Effects 0.000 claims description 6
238000002955 isolation Methods 0.000 claims description 5
239000000463 material Substances 0.000 claims description 5
238000004519 manufacturing process Methods 0.000 claims description 3
230000002745 absorbent Effects 0.000 claims description 2
239000002250 absorbent Substances 0.000 claims description 2
239000012080 ambient air Substances 0.000 claims description 2
239000002274 desiccant Substances 0.000 claims description 2
238000010292 electrical insulation Methods 0.000 claims 2
239000007787 solid Substances 0.000 abstract description 3
239000007789 gas Substances 0.000 description 13
239000006096 absorbing agent Substances 0.000 description 8
230000007246 mechanism Effects 0.000 description 8
229910018503 SF6 Inorganic materials 0.000 description 7
SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 7
238000009833 condensation Methods 0.000 description 4
230000005494 condensation Effects 0.000 description 4
238000010276 construction Methods 0.000 description 4
239000000428 dust Substances 0.000 description 4
238000005538 encapsulation Methods 0.000 description 4
230000007257 malfunction Effects 0.000 description 4
229960000909 sulfur hexafluoride Drugs 0.000 description 4
230000007613 environmental effect Effects 0.000 description 3
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
230000008901 benefit Effects 0.000 description 2
238000005266 casting Methods 0.000 description 2
230000015556 catabolic process Effects 0.000 description 2
238000011109 contamination Methods 0.000 description 2
238000000354 decomposition reaction Methods 0.000 description 2
230000000694 effects Effects 0.000 description 2
238000004880 explosion Methods 0.000 description 2
230000002349 favourable effect Effects 0.000 description 2
239000012774 insulation material Substances 0.000 description 2
230000007774 longterm Effects 0.000 description 2
238000012423 maintenance Methods 0.000 description 2
239000002184 metal Substances 0.000 description 2
231100000331 toxic Toxicity 0.000 description 2
230000002588 toxic effect Effects 0.000 description 2
101000856246 Arabidopsis thaliana Cleavage stimulation factor subunit 77 Proteins 0.000 description 1
235000010724 Wisteria floribunda Nutrition 0.000 description 1
230000002411 adverse Effects 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
239000003086 colorant Substances 0.000 description 1
230000001143 conditioned effect Effects 0.000 description 1
238000001816 cooling Methods 0.000 description 1
230000007797 corrosion Effects 0.000 description 1
238000005260 corrosion Methods 0.000 description 1
BPFZRKQDXVZTFD-UHFFFAOYSA-N disulfur decafluoride Chemical compound FS(F)(F)(F)(F)S(F)(F)(F)(F)F BPFZRKQDXVZTFD-UHFFFAOYSA-N 0.000 description 1
230000005684 electric field Effects 0.000 description 1
238000010348 incorporation Methods 0.000 description 1
239000011810 insulating material Substances 0.000 description 1
239000004033 plastic Substances 0.000 description 1
230000003449 preventive effect Effects 0.000 description 1
230000001681 protective effect Effects 0.000 description 1
230000009467 reduction Effects 0.000 description 1
230000008439 repair process Effects 0.000 description 1
230000004044 response Effects 0.000 description 1
239000011343 solid material Substances 0.000 description 1
229910052717 sulfur Inorganic materials 0.000 description 1
OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical compound FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 description 1
LSJNBGSOIVSBBR-UHFFFAOYSA-N thionyl fluoride Chemical compound FS(F)=O LSJNBGSOIVSBBR-UHFFFAOYSA-N 0.000 description 1

Classifications

- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/01—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with resin casing
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/22—Selection of fluids for arc-extinguishing
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H2033/566—Avoiding the use of SF6
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H33/562—Means for avoiding liquefaction or for disposing of liquefaction products

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Patch Boards (AREA)
Switch Cases, Indication, And Locking (AREA)
Gas-Insulated Switchgears (AREA)
Details Of Indoor Wiring (AREA)
Non-Insulated Conductors (AREA)
Electronic Switches (AREA)
Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

NL1017797A 2001-04-09 2001-04-09 Een- of meerfasenschakelinrichting in een omhullende behuizing. NL1017797C2 (nl)

Priority Applications (22)

Application Number	Priority Date	Filing Date	Title
NL1017797A NL1017797C2 (nl)	2001-04-09	2001-04-09	Een- of meerfasenschakelinrichting in een omhullende behuizing.
US10/474,372 US7158369B2 (en)	2001-04-09	2002-04-09	Single phase or polyphase switchgear in an enveloping housing
ES02722965T ES2276932T3 (es)	2001-04-09	2002-04-09	Aparato de conmutacion monofasico o polifasico en un alojamiento envolvente.
DK02722965T DK1378040T3 (da)	2001-04-09	2002-04-09	Enkeltfaset eller flerfaset koblingsanlæg i et omsluttende hus
CZ20032726A CZ20032726A3 (cs)	2001-04-09	2002-04-09	Jednofázová nebo vícefázová rozvodna zapouzdřené skříni
HU0303852A HUP0303852A2 (hu)	2001-04-09	2002-04-09	Egyfázisú vagy többfázisú teljesítménykapcsoló megfelelő burkolatban elhelyezve
BR0208760-0A BR0208760A (pt)	2001-04-09	2002-04-09	Aparelho de comutação de uma fase ou polifásico e equipamento de distribuição
HRP20030814 HRP20030814A2 (en)	2001-04-09	2002-04-09	Single phase or polyphase switchgear in an enveloping housing
NZ528730A NZ528730A (en)	2001-04-09	2002-04-09	Single phase or polyphase switchgear in an enveloping housing
CNB028115937A CN100358199C (zh)	2001-04-09	2002-04-09	在密封壳体内的单相或多相开关装置
PCT/NL2002/000227 WO2002082606A1 (en)	2001-04-09	2002-04-09	Single phase or polyphase switchgear in an enveloping housing
DE60216435T DE60216435T2 (de)	2001-04-09	2002-04-09	Einphasige oder mehrphasige schaltanlage in einem umhüllenden gehäuse
JP2002580456A JP2004522396A (ja)	2001-04-09	2002-04-09	包囲ハウジング内に収容された単相または多相開閉装置
CA002443803A CA2443803A1 (en)	2001-04-09	2002-04-09	Single phase or polyphase switchgear in an enveloping housing
AT02722965T ATE347188T1 (de)	2001-04-09	2002-04-09	Einphasige oder mehrphasige schaltanlage in einem umhüllenden gehäuse
EP02722965A EP1378040B1 (en)	2001-04-09	2002-04-09	Single phase or polyphase switchgear in an enveloping housing
PT02722965T PT1378040E (pt)	2001-04-09	2002-04-09	Aparelho de comutação monofásico ou polifásico encapsulado numa caixa
EEP200300493A EE200300493A (et)	2001-04-09	2002-04-09	Kestaga ümbritsetud ühe- või mitmefaasiline jaotusseade
PL366369A PL202714B1 (pl)	2001-04-09	2002-04-09	Jednofazowa lub wielofazowa rozdzielnica
YUP-879/03A YU87903A (sh)	2001-04-09	2002-04-09	Jednofazni ili vi[efazni razvodni ure\aj u ku]i[tuen :single phase or polyphase switchgear in an enveloping housing
AU2002253710A AU2002253710B2 (en)	2001-04-09	2002-04-09	Single phase or polyphase switchgear in an enveloping housing
NO20034501A NO325499B1 (no)	2001-04-09	2003-10-08	Enfaset eller flerfaset koplingsinnretning i et omsluttende hus

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
NL1017797A NL1017797C2 (nl)	2001-04-09	2001-04-09	Een- of meerfasenschakelinrichting in een omhullende behuizing.
NL1017797		2001-04-09

Publications (1)

Publication Number	Publication Date
NL1017797C2 true NL1017797C2 (nl)	2002-10-10

Family

ID=19773205

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL1017797A NL1017797C2 (nl)	2001-04-09	2001-04-09	Een- of meerfasenschakelinrichting in een omhullende behuizing.

Country Status (22)

Country	Link
US (1)	US7158369B2 (cs)
EP (1)	EP1378040B1 (cs)
JP (1)	JP2004522396A (cs)
CN (1)	CN100358199C (cs)
AT (1)	ATE347188T1 (cs)
AU (1)	AU2002253710B2 (cs)
BR (1)	BR0208760A (cs)
CA (1)	CA2443803A1 (cs)
CZ (1)	CZ20032726A3 (cs)
DE (1)	DE60216435T2 (cs)
DK (1)	DK1378040T3 (cs)
EE (1)	EE200300493A (cs)
ES (1)	ES2276932T3 (cs)
HR (1)	HRP20030814A2 (cs)
HU (1)	HUP0303852A2 (cs)
NL (1)	NL1017797C2 (cs)
NO (1)	NO325499B1 (cs)
NZ (1)	NZ528730A (cs)
PL (1)	PL202714B1 (cs)
PT (1)	PT1378040E (cs)
WO (1)	WO2002082606A1 (cs)
YU (1)	YU87903A (cs)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
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JP4637708B2 (ja) *	2005-09-30	2011-02-23	三菱電機株式会社	ガス絶縁開閉装置の絶縁ガス封入方法及びガス絶縁開閉装置の製造方法
US7932466B2 (en) *	2006-02-04	2011-04-26	Dean Sanders	Nautilus self pressurizing equipment enclosure
WO2008006915A1 (es)	2006-07-13	2008-01-17	Ormazabal Y Cia, S.A.	Equipo eléctrico encapsulado modular para redes de distribución eléctrica
EP2075817A1 (en)	2007-12-27	2009-07-01	Ormazabal Y Cia., S.A.	Actuation transmission system for electrical equipment
US20090185332A1 (en) *	2008-01-23	2009-07-23	Coomer Jarrod L	Cassette assembly and panel assembly therefor
US7974078B2 (en) *	2008-01-23	2011-07-05	Eaton Corporation	Electrical enclosure assembly having venting system
CN101854036B (zh) *	2009-03-31	2012-06-06	青岛特锐德电气股份有限公司	空气开关柜
CN102484360B (zh) *	2009-10-29	2014-08-27	三菱电机株式会社	电气开关装置
CN101789565B (zh) *	2010-03-25	2012-01-04	北京双杰电气股份有限公司	24kv固体绝缘全封闭开关绝缘罩
JP5181003B2 (ja) *	2010-08-23	2013-04-10	株式会社日立製作所	スイッチギヤ
DE102011004426A1 (de) *	2011-02-18	2012-08-23	Schneider Electric Sachsenwerk Gmbh	Elektrische Schaltanlage, insbesondere Mittelspannungsschaltanlage
CN102315605B (zh) *	2011-05-13	2014-09-10	常州森隆电力科技有限公司	正压力全密封固体绝缘开关特种设备
KR101279894B1 (ko) *	2012-04-03	2013-06-28	엘에스산전 주식회사	고체 절연 스위치기어용 개폐기
WO2014053661A1 (en) *	2012-10-05	2014-04-10	Abb Technology Ag	Apparatus containing a dielectric insulation gas comprising an organofluorine compound
US10978256B1 (en)	2013-03-15	2021-04-13	Innovative Switchgear IP, LLC	Electrical switching device
US10325738B2 (en)	2017-10-10	2019-06-18	Eaton Intelligent Power Limited	Gas-insulated switchgear with sealed operating mechanisms
ES1276579Y (es)	2021-03-23	2021-11-15	Ormazabal Y Cia S L U	Aparamenta eléctrica aislada en gas para redes de distribución eléctrica de media y alta tensión
US20240429689A1 (en) *	2021-05-18	2024-12-26	Abb Schweiz Ag	Switchgear
ES1295907Y (es)	2022-06-15	2023-03-14	Ormazabal Y Cia S L U	Dispositivo de interconexión eléctrica

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2702763A1 (de) *	1977-01-24	1978-07-27	Bbc Brown Boveri & Cie	Drucklufterzeugungsanlage fuer elektrische schaltanlagen
EP1054493A1 (en) *	1999-05-21	2000-11-22	Mitsubishi Denki Kabushiki Kaisha	Gas-insulated switchgear

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Publication number	Priority date	Publication date	Assignee	Title
US2425250A (en) *	1945-01-31	1947-08-05	Weston Electrical Instr Corp	Encased electrical device
NL6711574A (cs) *	1967-08-23	1969-02-25
DE2702767C2 (de) *	1977-01-24	1982-09-09	Brown, Boveri & Cie Ag, 6800 Mannheim	Verfahren zum Trocknen von Druckluft für elektrische Schaltzwecke und Trockenvorrichtung zur Durchführung des Verfahrens
CN1027024C (zh) *	1985-04-15	1994-12-14	株式会社日立制作所	气体绝缘电气设备
FR2596576B1 (fr) *	1986-03-26	1988-05-27	Merlin Gerin	Disjoncteur electrique a autosoufflage a tenue dielectrique amelioree
NL8900709A (nl) *	1989-03-22	1990-10-16	Holec Syst & Componenten	Een of meerfasige middenspannings-schakelinrichting en een hiermee samengestelde middenspannings-verdeelinrichting.
DE9420193U1 (de) *	1994-12-05	1995-02-09	Siemens AG, 80333 München	Gasisolierte Leistungsschalter-Anlage

2001
- 2001-04-09 NL NL1017797A patent/NL1017797C2/nl not_active IP Right Cessation
2002
- 2002-04-09 WO PCT/NL2002/000227 patent/WO2002082606A1/en not_active Ceased
- 2002-04-09 CN CNB028115937A patent/CN100358199C/zh not_active Expired - Lifetime
- 2002-04-09 CA CA002443803A patent/CA2443803A1/en not_active Abandoned
- 2002-04-09 CZ CZ20032726A patent/CZ20032726A3/cs unknown
- 2002-04-09 AU AU2002253710A patent/AU2002253710B2/en not_active Ceased
- 2002-04-09 EP EP02722965A patent/EP1378040B1/en not_active Expired - Lifetime
- 2002-04-09 EE EEP200300493A patent/EE200300493A/xx unknown
- 2002-04-09 HR HRP20030814 patent/HRP20030814A2/xx not_active Application Discontinuation
- 2002-04-09 DE DE60216435T patent/DE60216435T2/de not_active Expired - Lifetime
- 2002-04-09 ES ES02722965T patent/ES2276932T3/es not_active Expired - Lifetime
- 2002-04-09 NZ NZ528730A patent/NZ528730A/en not_active IP Right Cessation
- 2002-04-09 PT PT02722965T patent/PT1378040E/pt unknown
- 2002-04-09 HU HU0303852A patent/HUP0303852A2/hu unknown
- 2002-04-09 JP JP2002580456A patent/JP2004522396A/ja active Pending
- 2002-04-09 YU YUP-879/03A patent/YU87903A/sr unknown
- 2002-04-09 DK DK02722965T patent/DK1378040T3/da active
- 2002-04-09 PL PL366369A patent/PL202714B1/pl unknown
- 2002-04-09 AT AT02722965T patent/ATE347188T1/de not_active IP Right Cessation
- 2002-04-09 BR BR0208760-0A patent/BR0208760A/pt not_active IP Right Cessation
- 2002-04-09 US US10/474,372 patent/US7158369B2/en not_active Expired - Fee Related
2003
- 2003-10-08 NO NO20034501A patent/NO325499B1/no not_active IP Right Cessation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2702763A1 (de) *	1977-01-24	1978-07-27	Bbc Brown Boveri & Cie	Drucklufterzeugungsanlage fuer elektrische schaltanlagen
EP1054493A1 (en) *	1999-05-21	2000-11-22	Mitsubishi Denki Kabushiki Kaisha	Gas-insulated switchgear

Also Published As

Publication number	Publication date
EE200300493A (et)	2003-12-15
BR0208760A (pt)	2004-05-11
CA2443803A1 (en)	2002-10-17
PL366369A1 (en)	2005-01-24
US7158369B2 (en)	2007-01-02
PT1378040E (pt)	2007-02-28
NO20034501D0 (no)	2003-10-08
CZ20032726A3 (cs)	2004-03-17
DK1378040T3 (da)	2007-04-16
CN1515054A (zh)	2004-07-21
DE60216435T2 (de)	2007-09-20
ATE347188T1 (de)	2006-12-15
AU2002253710B2 (en)	2006-10-26
EP1378040A1 (en)	2004-01-07
CN100358199C (zh)	2007-12-26
PL202714B1 (pl)	2009-07-31
HUP0303852A2 (hu)	2004-03-01
NO325499B1 (no)	2008-05-19
NO20034501L (no)	2003-12-08
YU87903A (sh)	2006-03-03
DE60216435D1 (de)	2007-01-11
ES2276932T3 (es)	2007-07-01
US20040130858A1 (en)	2004-07-08
WO2002082606A1 (en)	2002-10-17
EP1378040B1 (en)	2006-11-29
NZ528730A (en)	2005-04-29
HRP20030814A2 (en)	2004-12-31
JP2004522396A (ja)	2004-07-22

Legal Events

Date	Code	Title	Description
2002-12-02	PD2B	A search report has been drawn up
2004-05-03	SD	Assignments of patents	Owner name: EATON ELECTRIC N.V. Owner name: EATON HOLDING INTERNATIONAL I BV
2007-01-02	VD1	Lapsed due to non-payment of the annual fee	Effective date: 20061101
2010-01-04	VD1	Lapsed due to non-payment of the annual fee	Effective date: 20091101

Publication	Publication Date	Title
NL1017797C2 (nl)	2002-10-10	Een- of meerfasenschakelinrichting in een omhullende behuizing.
AU2002253710A1 (en)	2003-04-10	Single phase or polyphase switchgear in an enveloping housing
US8576545B2 (en)	2013-11-05	Switchgear
JP2504696B2 (ja)	1996-06-05	絶縁用サ―キットブレ―カ、該絶縁用サ―キットブレ―カを含む中電圧ベイ及び接触器ベイ、並びに該絶縁用サ―キットブレ―カを収容する中電圧ステ―ション
JP4237591B2 (ja)	2009-03-11	ガス絶縁開閉装置
US5661280A (en)	1997-08-26	Combination of a gas-filled interrupter and oil-filled transformer
KR20020039244A (ko)	2002-05-25	가스절연개폐장치
US6195253B1 (en)	2001-02-27	Substation
KR930020796A (ko)	1993-10-20	고전압 스위치패널
Arora et al.	2005	Design features of GIS
GB2471925A (en)	2011-01-19	Electrical switchgear
JP4373393B2 (ja)	2009-11-25	ガス絶縁開閉装置
KR20070075278A (ko)	2007-07-18	가스절연 전기기기
CZ280697B6 (cs)	1996-04-17	Zapouzdřené spínací zařízení plněné plynem
JP4377517B2 (ja)	2009-12-02	スイッチギヤ
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