CA2133213A1 - Earthing switch for metal-clad high-voltage switchgear insulated with compressed gas - Google Patents
Earthing switch for metal-clad high-voltage switchgear insulated with compressed gasInfo
- Publication number
- CA2133213A1 CA2133213A1 CA002133213A CA2133213A CA2133213A1 CA 2133213 A1 CA2133213 A1 CA 2133213A1 CA 002133213 A CA002133213 A CA 002133213A CA 2133213 A CA2133213 A CA 2133213A CA 2133213 A1 CA2133213 A1 CA 2133213A1
- Authority
- CA
- Canada
- Prior art keywords
- contact
- earthing
- cladding
- insulated
- mobile
- 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.)
- Abandoned
Links
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
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
Abstract of the Disclosure EARTHING SWITCH FOR METAL-CLAD, HIGH-VOLTAGE SWITCHGEAR
INSULATED WITH COMPRESS GAS
In the case of an earthing switch for a metal-clad, high-voltage switchgear insulated with compressed gas, the mobile earthing contact (3, 11) is arranged so as to be insulated from the earthed cladding (1) for measuring purposes. This insulation arrangement of the earthing contact (3, 11) is bypassed by an electrical connection, preferably outside of the cladding (1), for the function of earthing switching device. The electrical connection is released [disconnected] when the earthing contact (3, 11) is connected in the closed position to a measuring device. In accordance with the invention, an additional contact arrangement (7, 7a, 8, 8a) is provided, which is forced to electrically bypass the insulation arrangement and which connects the mobile earthing contact (3, 11) to the earthed cladding outside of the closed and open position in the course of the switching motion between these two positions.
By this means, overvoltage resulting from discharge occurrences on the insulation arrangement and, if indicated, damage to measuring instruments connected to the earthing switches are reliably avoided.
FIG. 2
INSULATED WITH COMPRESS GAS
In the case of an earthing switch for a metal-clad, high-voltage switchgear insulated with compressed gas, the mobile earthing contact (3, 11) is arranged so as to be insulated from the earthed cladding (1) for measuring purposes. This insulation arrangement of the earthing contact (3, 11) is bypassed by an electrical connection, preferably outside of the cladding (1), for the function of earthing switching device. The electrical connection is released [disconnected] when the earthing contact (3, 11) is connected in the closed position to a measuring device. In accordance with the invention, an additional contact arrangement (7, 7a, 8, 8a) is provided, which is forced to electrically bypass the insulation arrangement and which connects the mobile earthing contact (3, 11) to the earthed cladding outside of the closed and open position in the course of the switching motion between these two positions.
By this means, overvoltage resulting from discharge occurrences on the insulation arrangement and, if indicated, damage to measuring instruments connected to the earthing switches are reliably avoided.
FIG. 2
Description
SEF ~-1994 1:~17 FRCrl KENrc~ 3 KE~IYol~ T0 ~9Z~033~11E13 3294494 D.93 ~iLE~. ~i THIS ~It~D
a~TPIA~-iSLATiON
The imr~ion ~olat~ to aYl aa~hin~ ~wi~ r a m~t~l-cla~L, hi~b voltag~ switchgear insulatRd With S co~npr~:sad ~as havin~ a mobil~ a~rthing conta¢t, wh~ch i~ a~x~ged BO a~s 1;o be in~ul~ed :~r~ ~e ~arthea cladding, and having ar~ el~ ri~l connec~lo~ t~sat bypa~ a in~nllA~iqn arr~ng~ o~ ts~ ~eLrthins;
contac~, as~ need.~.
~arthing ~ ch~æ of this Jc~nd, a~ disclo~ed, S~;r :
~x~mpl~ y the ~P-A o 075 922, are ~3~d 2~0t only to ~r~n~r ~e e~rth ~clter.~ial to ~ onductor o~ ~e ~wit~hgsar ~arrying ~e hig~ voltage, ~ut al~ or ~ea~uring purpoæ~ du~ing nclr~al op~ration, in :~
15 particular out~ids o~ the tr~nsf ~r o~ the elec:~ric energy. Th~ in~ula~ion arrange~Qen~, whic~ is by~?a~ed by th~ Ql~ctr1cal GorJnection for th~ functio~ o~
transi~erring th~ aaxth poten~ial, Dlu~ be~ ctive : , ~a~tiv~ for th~ measuring ~unction, i.e. ~ bypas~
20 mu3t ba r~lea~2d ~disa~nnec~d~
E~[aW2VI!~I:', such an ~r~ing swit:h is ~ eopardiz d l~y pr~-ar~ing ~e~ the mQbile ea~t:~ing Gon~a~:t in t~e a:l:`Da~. 0 th~ insll~lation ar~anq~m~nt when ~e ~arthlnq swi~ch i5 mov~ ~c, th~ clo~d po~ition~ In the cou:r:;e o~ the . :: .
25 clo$irlg ~ovQlhan~ charg~s o~ considerable~ v~1tas~e~
still ba pr~sent on the conductor ~f ~cSIe a~~bly, w~ch could abruptly l~aad ~eo a ~p~r~cover ~arc-over~ ~:hortly be~ore ~h~ ea~thlng con~act comos~ in ga1vani~- cor~aa~
3'~
SEP-~3-1~94 i0:17 FRO~ KEN~'ON ~ KENYON TO ~9~07,3#1613232~440~ P.04 ~ith ~ conductor. Such a ~parXo~ Cau~;es tranf~ient over~rol~a~es ~sur~Q~, which can o~rload the insulation arra~gl-mænt r~t,lad Qnly ~o~ volt~e of ~ew kY.
Th~ U.S. Patent 4,413,166 di~close~ a di3conn~ct 5 switt:h, in t~e ~Yas~ o~ wn$c~ in th~ open conditi~nr one~
of ~h~ [pair of ~ ~lsctrod~ a~ is ~epa~a~-~d f s:o~ t~ j ot:her l~s forced to ~ke galv~rlic contact with the ~aarth po~enti~l T~e ~ A-0 100 S10 discloses an e~arthing switch, 10 wh~.ch c~t~hli~he~ an ear~hir~ contact by way of ~ .
re~ or. No provis1on is ~nade therein ~or a tamporary dir~ct groundlng of~ on~ trode o~ th~ ~a~hing ~wi~ch to pro~sct fro~ transient o~ rvolt~g~s.
Th~ object o~ the inv~2ntion is to ~Qliably avoid lS ov~r~olt~g~ r~sulti~:g frcm discharg~ occ~rr~nc:~s on the insula~i~n ar~anye~en~ indica~ed, da~age tc~ I
~n~ suriIlg in~t~n1:~ cor~n~c~d q harQto.
In acc:ordance w~ h~ i~v~n~ on, t:his cbiecti~e i:~
~olved in that an additional con~ct arrangem-nt i~s 20 provide~d, whlch i~ ~orc~d t~ tric~lly bypa~s 'ch~
in~ulatioJ~ arra~g~m4nt and wh~ch co~mects; th~ mobil~
aa~hi~ on1~ct to th~ ea:~'eh~d cladding out~ide o~ the clo~0d and op~n po~ition in th6~ cour~e o~ the switc2~in~
motioJ~ ween t;h~ two positions.
a~TPIA~-iSLATiON
The imr~ion ~olat~ to aYl aa~hin~ ~wi~ r a m~t~l-cla~L, hi~b voltag~ switchgear insulatRd With S co~npr~:sad ~as havin~ a mobil~ a~rthing conta¢t, wh~ch i~ a~x~ged BO a~s 1;o be in~ul~ed :~r~ ~e ~arthea cladding, and having ar~ el~ ri~l connec~lo~ t~sat bypa~ a in~nllA~iqn arr~ng~ o~ ts~ ~eLrthins;
contac~, as~ need.~.
~arthing ~ ch~æ of this Jc~nd, a~ disclo~ed, S~;r :
~x~mpl~ y the ~P-A o 075 922, are ~3~d 2~0t only to ~r~n~r ~e e~rth ~clter.~ial to ~ onductor o~ ~e ~wit~hgsar ~arrying ~e hig~ voltage, ~ut al~ or ~ea~uring purpoæ~ du~ing nclr~al op~ration, in :~
15 particular out~ids o~ the tr~nsf ~r o~ the elec:~ric energy. Th~ in~ula~ion arrange~Qen~, whic~ is by~?a~ed by th~ Ql~ctr1cal GorJnection for th~ functio~ o~
transi~erring th~ aaxth poten~ial, Dlu~ be~ ctive : , ~a~tiv~ for th~ measuring ~unction, i.e. ~ bypas~
20 mu3t ba r~lea~2d ~disa~nnec~d~
E~[aW2VI!~I:', such an ~r~ing swit:h is ~ eopardiz d l~y pr~-ar~ing ~e~ the mQbile ea~t:~ing Gon~a~:t in t~e a:l:`Da~. 0 th~ insll~lation ar~anq~m~nt when ~e ~arthlnq swi~ch i5 mov~ ~c, th~ clo~d po~ition~ In the cou:r:;e o~ the . :: .
25 clo$irlg ~ovQlhan~ charg~s o~ considerable~ v~1tas~e~
still ba pr~sent on the conductor ~f ~cSIe a~~bly, w~ch could abruptly l~aad ~eo a ~p~r~cover ~arc-over~ ~:hortly be~ore ~h~ ea~thlng con~act comos~ in ga1vani~- cor~aa~
3'~
SEP-~3-1~94 i0:17 FRO~ KEN~'ON ~ KENYON TO ~9~07,3#1613232~440~ P.04 ~ith ~ conductor. Such a ~parXo~ Cau~;es tranf~ient over~rol~a~es ~sur~Q~, which can o~rload the insulation arra~gl-mænt r~t,lad Qnly ~o~ volt~e of ~ew kY.
Th~ U.S. Patent 4,413,166 di~close~ a di3conn~ct 5 switt:h, in t~e ~Yas~ o~ wn$c~ in th~ open conditi~nr one~
of ~h~ [pair of ~ ~lsctrod~ a~ is ~epa~a~-~d f s:o~ t~ j ot:her l~s forced to ~ke galv~rlic contact with the ~aarth po~enti~l T~e ~ A-0 100 S10 discloses an e~arthing switch, 10 wh~.ch c~t~hli~he~ an ear~hir~ contact by way of ~ .
re~ or. No provis1on is ~nade therein ~or a tamporary dir~ct groundlng of~ on~ trode o~ th~ ~a~hing ~wi~ch to pro~sct fro~ transient o~ rvolt~g~s.
Th~ object o~ the inv~2ntion is to ~Qliably avoid lS ov~r~olt~g~ r~sulti~:g frcm discharg~ occ~rr~nc:~s on the insula~i~n ar~anye~en~ indica~ed, da~age tc~ I
~n~ suriIlg in~t~n1:~ cor~n~c~d q harQto.
In acc:ordance w~ h~ i~v~n~ on, t:his cbiecti~e i:~
~olved in that an additional con~ct arrangem-nt i~s 20 provide~d, whlch i~ ~orc~d t~ tric~lly bypa~s 'ch~
in~ulatioJ~ arra~g~m4nt and wh~ch co~mects; th~ mobil~
aa~hi~ on1~ct to th~ ea:~'eh~d cladding out~ide o~ the clo~0d and op~n po~ition in th6~ cour~e o~ the switc2~in~
motioJ~ ween t;h~ two positions.
2~ q~hrou~h applic~tion of ths i~ve~tio:~, it 1~; ~n~ur2d that s~iven a r21~a~3ed ~disconn~c~ed~ electracal conn~ction, t~e in~ula~ion ~rrange~ent and ~ ~easuring d~vic~ connect~d to tne e~rthing contact ilrQ
automatically pro~ect~d in i~n ar~3a o~ closing 30 [making~ ~ov~ment of the ~arthing ~ontact, in which pre a~cil~ t~k~ plac~.
In ~ ~as~ o~ a first ~xemplary em~odimen~ o~ ~n rthing ~witch accordi2~g to th~ in~esntion, th~3 mnbil~
hlng ~ontact 1 g ~àvan~ageously a blad~ switching 35 contact ar~anqed ~n a rotatably driven sh~t, ~hi~:h i~
capablQ o~ ~ing conn~cted to a sliding~ac:ta~rl contaa st~ip oS th6~ claddLng arranged conc~ntrically around th~
2 133~13 ,.~, .
SEP-2a-1~1 LEI~ FROrl KEI"IYON ~ ~EN'~ON TO ~924E~33#1613232a440# P. 05 shaft ~Jia a sprln~ contact ~hat 1~ ~ovable a~ right ~rlql~ to the ~ha:~t.
In t~ ca~e of ~nothar ACIYantag~o~& ~p~Ci~i~
di~nt oS tl~e i~v~nt~va id~, it is pro~rid~sd ~or th~
mobile ear~ g contact to be i movabl~ contact p$rJ, which ha~ a straight li~a di~pla~ n~ and i~
conne¢tible to a slidiny-ac:tion sontac~ ~urf ace OL~ tl~
~laddin~ nnlng parallel to ~ 1Xi5~ via a spring contact suppor~e~ a~ righ~ angl~ to ~he con~act pin.
Two exe~npl~ry em~od~ncn~s o~ n e~r~hing switcll ror a met~l-cla~, high-voltag~ swit~hqclar insulated with co~npr~ od ga~ according t~ thæ in~r~ntion ar~ d~scri~ecl an t~lla~ balBi8 O~ 3 drawing, andl the m~ hod o~ op~ration i~ cla~i~ied. -:
In crosssec~ion, Figures 1 thr~ugh 3 schema~i~ally d~pict an ear'chinq ~wi~r~h in tnree di~eren~ pwi ions ~tw~ closed zmd open position du~ing tha ~ nce o~ mo~i~n ~ mc3:$1~ ea~ con~ac~O j Pi~ s 4 and S show ano~he~ plar5~ e~bo~l~ent I ~:
2 ~ o~ an ea~hing s~itch accordiDg~ to th~ invention ~ 1 In ~e c~ thR ea~}~in~ swit~h d~pic~c~d in ::
Figu~e 1, a conducto~ 2 ca;~ying a high vol~a~e i5 provided in~ide the ~r~al cladding 1, which ~onductD~ 2 :~
is able to b~ moved into a q~lvanic connection wlth a~l ¦
2 5 earthinS~ ~ontact design~ a l~}~â~ cont~ 3 . ~or this purpos~ e ~lade contact 3 is seatf3d in a tor~3i4nally r~gid ~art~angement~ on a drive sha~t 4, which i~ a~le ~o bo s~t in xo~a~y moltion ~y a drivq situ~d ou~side o~ the ear~hed cladding 1~ F~ ~he sake a~ ~implicity, thi~ drive will not b~ de~t:rib~d in ~ter~ detail. I ~
~h~ b~ring 5 suppo~ting the sha~t ~ i5 pro~rid~d ~ . :
wlth an in~ulation ~rrang~ment ~ated :~cr voltag~6 o~
~w kv, whi~h is ahle t:D be by-p~sed ou1:side of the ~ :
3S cladding 1 ~y flex~blQ conductor or the li~k~ tha~ ¦
conn~ct~ thi~ eladding ~o t~ ~haft 4. In the cours6! of the cl~s-n-v r~ovemene, the ~lAde contact :lov~s oue c~ th ~ :~ 3 '~ 2 1 3 SEP-213-1~19'1 10:13 FRCll`1 KENYON ~ KENYON TO `~9:~4E~33(~1613Z32E1~140~: P.06 , .
posi~io~ 6 ~of the opeIl positiort) c~a~wn with a dotted lin~ i~to th~ p~36ition shown, in w~ich ~ spring-lo~aded pin 7 o~ an additi~nal contact arran~ament ha~ not y~t ~de c:c~ntact wlth a ~lifiin~action cont~c~ s~rip 8.
~ 2n th~ ~rthinq ~wi~n ~ ved ~ er ~nto ~he clo~ po~ition, th~ blade conl:act 3 ar rlve~; in po~:tion appar~nt ~ro~ Fig~r~ 2~ in whic~ th~ pin 7 T~kes cc~nta~ wit~ the sl id~g-action cont:a~t ~tsip and, conse~uently, is compelled to trans~e~ th~ ~ar'c2 pot~ntial of th~ cladding 1 tc th~ blade cont;~ot 3.
a r~sult, thQ bladla contact 3 i~ additionally ground~d ~o wi~hstand the ex~na1 ~1e~:~ri~a1 ~-~nnection betw~en ~hR ~ha~t 4 and the cladclinq 1, so tha~ in ~his stat~
~positlon], overvoltages are kept away ~ron~ th~ !
insu1a~ion a~r~ngement of bearing 5. '' ~nen th~ ear'ching s~itch is ~oved ~urther into th~ ¦
clo~ed po~ition, as ~hown in P'$ 3ur e 3 t the blad~ nt2l~t comef3 into gal~anic contact w1th th~ corldu~or ~ . It ~s apparen~ here ~at, in ~ po~i~ion, ~he ~in 7 i~ l 2U dis~ngagRd fxom the slid~g-ac~ion con~ac~ s~rip 8~ i In a pa~tially cut-o~ w a~d i~ a correspondl~
sea~ o~, Figuro~ 4 and 5 i11uotrat~ anoth~: oxemplary 0ml;0dim~nt o~ an earthin~ switch accordin~ to th~ ~
invention, in t~e case of whiah th2 same part~ ar~ giv~n 1`
a 5 th~ s,~e r~r~nc~ symbols a~s in F~ure~ 1 ~hrou~h 3 .
T~e earthing contzlct i5 a ~:onta~:t pin 11, which i~ I
di~placeabl~ in a s~raight line 3:~y means ~ c~ntact ro11~rs ~ an~ bar guid~s 10 and i~ op0rab1~ by a roll~-1~v~ ao~uata~ 12. H~r~, Fiyu~ 4 shnw~ the open 3 0 po~it~ on. In the course o~ ~he switching motion in th~ ¦
~$rection o~ ~h~ arrow 13, a~ the line o~ int~rs~ction A-B ~how~ i n Fi~ 5, ~ pin 7a, which i~ ~uided wit~ ¦
~pring action at right angles to ~ contact pin 11; i3 pr~as~d aS~ain~t ~ ~liding-~cti~n ~:o~ta~t ~ a¢~ ~a, w th~t, in addi~ion, ~he ~arth po~ntial oX th~ c1a~din~ 1 i~ co~pu1so~i1y trans:~erred to th~ contact pin 11~ In the ~lo-led and op-n po~ition, th~. pin 7a doel~ not ~321~
SE''--213-1~9'1 10: 1~ FRUrl KEN'~ON ~ KEN`tON TO ~92~0'3t:1bl32328440el P.07 aontaci~ t~Q alidin~-a~:tion contact ~ ao~ 8a, ~o ~at 1' th2 e~in~ $wi'ta~ in thi:~ vers~on can ~e us~d ~or ;~easuri~g pu:rpo ~5 ~he~ ext~rrtal el~ctr~cal conn~ction ~not showrl ~ur~er) b~twe~n th~ claddin~ 1 ~nd the contac:~ pin 11 i ~ r~l~a~6~d ~di~con~el-ted~ to ~xt~rrYIly ~y-p~=s tho inYulaticn .l~rarlge=ent.
21~3~3 "~, ,.
SEF- 1994 10: ZEI FROM KEI`IYON & KENYON TO *9Z4E133~tl613232844EltJ P. 10 . I
Re~or~3nc~ Symbol Li~t e~ dd:Lng 2 Cwlductor 3 ~rth~ng cont~c~
automatically pro~ect~d in i~n ar~3a o~ closing 30 [making~ ~ov~ment of the ~arthing ~ontact, in which pre a~cil~ t~k~ plac~.
In ~ ~as~ o~ a first ~xemplary em~odimen~ o~ ~n rthing ~witch accordi2~g to th~ in~esntion, th~3 mnbil~
hlng ~ontact 1 g ~àvan~ageously a blad~ switching 35 contact ar~anqed ~n a rotatably driven sh~t, ~hi~:h i~
capablQ o~ ~ing conn~cted to a sliding~ac:ta~rl contaa st~ip oS th6~ claddLng arranged conc~ntrically around th~
2 133~13 ,.~, .
SEP-2a-1~1 LEI~ FROrl KEI"IYON ~ ~EN'~ON TO ~924E~33#1613232a440# P. 05 shaft ~Jia a sprln~ contact ~hat 1~ ~ovable a~ right ~rlql~ to the ~ha:~t.
In t~ ca~e of ~nothar ACIYantag~o~& ~p~Ci~i~
di~nt oS tl~e i~v~nt~va id~, it is pro~rid~sd ~or th~
mobile ear~ g contact to be i movabl~ contact p$rJ, which ha~ a straight li~a di~pla~ n~ and i~
conne¢tible to a slidiny-ac:tion sontac~ ~urf ace OL~ tl~
~laddin~ nnlng parallel to ~ 1Xi5~ via a spring contact suppor~e~ a~ righ~ angl~ to ~he con~act pin.
Two exe~npl~ry em~od~ncn~s o~ n e~r~hing switcll ror a met~l-cla~, high-voltag~ swit~hqclar insulated with co~npr~ od ga~ according t~ thæ in~r~ntion ar~ d~scri~ecl an t~lla~ balBi8 O~ 3 drawing, andl the m~ hod o~ op~ration i~ cla~i~ied. -:
In crosssec~ion, Figures 1 thr~ugh 3 schema~i~ally d~pict an ear'chinq ~wi~r~h in tnree di~eren~ pwi ions ~tw~ closed zmd open position du~ing tha ~ nce o~ mo~i~n ~ mc3:$1~ ea~ con~ac~O j Pi~ s 4 and S show ano~he~ plar5~ e~bo~l~ent I ~:
2 ~ o~ an ea~hing s~itch accordiDg~ to th~ invention ~ 1 In ~e c~ thR ea~}~in~ swit~h d~pic~c~d in ::
Figu~e 1, a conducto~ 2 ca;~ying a high vol~a~e i5 provided in~ide the ~r~al cladding 1, which ~onductD~ 2 :~
is able to b~ moved into a q~lvanic connection wlth a~l ¦
2 5 earthinS~ ~ontact design~ a l~}~â~ cont~ 3 . ~or this purpos~ e ~lade contact 3 is seatf3d in a tor~3i4nally r~gid ~art~angement~ on a drive sha~t 4, which i~ a~le ~o bo s~t in xo~a~y moltion ~y a drivq situ~d ou~side o~ the ear~hed cladding 1~ F~ ~he sake a~ ~implicity, thi~ drive will not b~ de~t:rib~d in ~ter~ detail. I ~
~h~ b~ring 5 suppo~ting the sha~t ~ i5 pro~rid~d ~ . :
wlth an in~ulation ~rrang~ment ~ated :~cr voltag~6 o~
~w kv, whi~h is ahle t:D be by-p~sed ou1:side of the ~ :
3S cladding 1 ~y flex~blQ conductor or the li~k~ tha~ ¦
conn~ct~ thi~ eladding ~o t~ ~haft 4. In the cours6! of the cl~s-n-v r~ovemene, the ~lAde contact :lov~s oue c~ th ~ :~ 3 '~ 2 1 3 SEP-213-1~19'1 10:13 FRCll`1 KENYON ~ KENYON TO `~9:~4E~33(~1613Z32E1~140~: P.06 , .
posi~io~ 6 ~of the opeIl positiort) c~a~wn with a dotted lin~ i~to th~ p~36ition shown, in w~ich ~ spring-lo~aded pin 7 o~ an additi~nal contact arran~ament ha~ not y~t ~de c:c~ntact wlth a ~lifiin~action cont~c~ s~rip 8.
~ 2n th~ ~rthinq ~wi~n ~ ved ~ er ~nto ~he clo~ po~ition, th~ blade conl:act 3 ar rlve~; in po~:tion appar~nt ~ro~ Fig~r~ 2~ in whic~ th~ pin 7 T~kes cc~nta~ wit~ the sl id~g-action cont:a~t ~tsip and, conse~uently, is compelled to trans~e~ th~ ~ar'c2 pot~ntial of th~ cladding 1 tc th~ blade cont;~ot 3.
a r~sult, thQ bladla contact 3 i~ additionally ground~d ~o wi~hstand the ex~na1 ~1e~:~ri~a1 ~-~nnection betw~en ~hR ~ha~t 4 and the cladclinq 1, so tha~ in ~his stat~
~positlon], overvoltages are kept away ~ron~ th~ !
insu1a~ion a~r~ngement of bearing 5. '' ~nen th~ ear'ching s~itch is ~oved ~urther into th~ ¦
clo~ed po~ition, as ~hown in P'$ 3ur e 3 t the blad~ nt2l~t comef3 into gal~anic contact w1th th~ corldu~or ~ . It ~s apparen~ here ~at, in ~ po~i~ion, ~he ~in 7 i~ l 2U dis~ngagRd fxom the slid~g-ac~ion con~ac~ s~rip 8~ i In a pa~tially cut-o~ w a~d i~ a correspondl~
sea~ o~, Figuro~ 4 and 5 i11uotrat~ anoth~: oxemplary 0ml;0dim~nt o~ an earthin~ switch accordin~ to th~ ~
invention, in t~e case of whiah th2 same part~ ar~ giv~n 1`
a 5 th~ s,~e r~r~nc~ symbols a~s in F~ure~ 1 ~hrou~h 3 .
T~e earthing contzlct i5 a ~:onta~:t pin 11, which i~ I
di~placeabl~ in a s~raight line 3:~y means ~ c~ntact ro11~rs ~ an~ bar guid~s 10 and i~ op0rab1~ by a roll~-1~v~ ao~uata~ 12. H~r~, Fiyu~ 4 shnw~ the open 3 0 po~it~ on. In the course o~ ~he switching motion in th~ ¦
~$rection o~ ~h~ arrow 13, a~ the line o~ int~rs~ction A-B ~how~ i n Fi~ 5, ~ pin 7a, which i~ ~uided wit~ ¦
~pring action at right angles to ~ contact pin 11; i3 pr~as~d aS~ain~t ~ ~liding-~cti~n ~:o~ta~t ~ a¢~ ~a, w th~t, in addi~ion, ~he ~arth po~ntial oX th~ c1a~din~ 1 i~ co~pu1so~i1y trans:~erred to th~ contact pin 11~ In the ~lo-led and op-n po~ition, th~. pin 7a doel~ not ~321~
SE''--213-1~9'1 10: 1~ FRUrl KEN'~ON ~ KEN`tON TO ~92~0'3t:1bl32328440el P.07 aontaci~ t~Q alidin~-a~:tion contact ~ ao~ 8a, ~o ~at 1' th2 e~in~ $wi'ta~ in thi:~ vers~on can ~e us~d ~or ;~easuri~g pu:rpo ~5 ~he~ ext~rrtal el~ctr~cal conn~ction ~not showrl ~ur~er) b~twe~n th~ claddin~ 1 ~nd the contac:~ pin 11 i ~ r~l~a~6~d ~di~con~el-ted~ to ~xt~rrYIly ~y-p~=s tho inYulaticn .l~rarlge=ent.
21~3~3 "~, ,.
SEF- 1994 10: ZEI FROM KEI`IYON & KENYON TO *9Z4E133~tl613232844EltJ P. 10 . I
Re~or~3nc~ Symbol Li~t e~ dd:Lng 2 Cwlductor 3 ~rth~ng cont~c~
4 I;ri~ s~aft B~aring j-6 Position (open po~ition~
7 Pin 7a Pin 8 Sliding-~cl~ion con~act E;~cri};~ ~
~a 91iding-ac:~ion contact ~ ac6l~ i Contact rollRrs~ ¦
~0 l~ar guid~s 11 ~ont~: pin 12 ~oller-lev~r ac uat~r , 1~ ~ow dir~:c~ion A Pin s-ctio:l ~
I
'
7 Pin 7a Pin 8 Sliding-~cl~ion con~act E;~cri};~ ~
~a 91iding-ac:~ion contact ~ ac6l~ i Contact rollRrs~ ¦
~0 l~ar guid~s 11 ~ont~: pin 12 ~oller-lev~r ac uat~r , 1~ ~ow dir~:c~ion A Pin s-ctio:l ~
I
'
Claims (3)
1. An earthing switch for a metal-clad, high-voltage switchgear insulated with compressed gas having a mobile earthing contact (3), which is arranged so as to be insulated from the earthed cladding (1), and having an electrical connection that bypasses the insulation arrangement of the earthing contact (3), as needed, c h a r a c t e r i z e d i n t h a t an additional contact arrangement (7, 7a, 8, 8a) is provided, which is forced to electrically bypass the insulation arrangement and which connects the mobile earthing contact (3, 11) to the earthed cladding (1) outside of the closed and open position in the course of the switching motion between these two position.
2. The earthing switch according to claim 1, c h a r a c t e r i z e d i n t h a t the mobile earthing contact (3) is a blade switching contact (3) arranged on a rotatably driven shaft (4), which is capable of being connected to a sliding-action contact strip (8) of the cladding (1) arranged concentrically around said shaft (4) via a flexible pin (7) that is movable at right angles to said shaft (4).
3. The earthing switch according to claim 1, c h a r a c t e r i z e d i n t h a t the mobile earthing contact is a movable contact pin (11), which has a straight line displacement and is connectible to a sliding-action contact surface (8a) of the cladding (1) running parallel to the axis, via flexible pin (7a) movably supported at right angles to said contact pin (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4211157.9 | 1992-03-31 | ||
| DE4211157A DE4211157A1 (en) | 1992-03-31 | 1992-03-31 | Earthing switch for a gas-insulated, metal-enclosed high-voltage switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2133213A1 true CA2133213A1 (en) | 1993-10-14 |
Family
ID=6455949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002133213A Abandoned CA2133213A1 (en) | 1992-03-31 | 1993-02-26 | Earthing switch for metal-clad high-voltage switchgear insulated with compressed gas |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0634063B1 (en) |
| AT (1) | ATE140826T1 (en) |
| CA (1) | CA2133213A1 (en) |
| DE (2) | DE4211157A1 (en) |
| WO (1) | WO1993020606A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005017939A1 (en) * | 2005-04-18 | 2006-10-19 | Abb Technology Ag | Electrical switching system has shielding plate with number of slots corresponding to number of earth blades through which earth blades can be pivoted into earthing position |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4413166A (en) * | 1981-03-19 | 1983-11-01 | Westinghouse Electric Corp. | Disconnect switch |
| JPS5920928A (en) * | 1982-07-26 | 1984-02-02 | 株式会社日立製作所 | Ground switch |
| DE8915427U1 (en) * | 1989-09-27 | 1990-07-19 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
| DE4023847A1 (en) * | 1990-07-27 | 1992-01-30 | Sachsenwerk Ag | TESTING DEVICE FOR THE INSULATING CAPACITY OF METAL-ENCLOSED SWITCHGEARS FILLED WITH AN INSULATING GAS |
-
1992
- 1992-03-31 DE DE4211157A patent/DE4211157A1/en not_active Withdrawn
-
1993
- 1993-02-26 AT AT93905153T patent/ATE140826T1/en not_active IP Right Cessation
- 1993-02-26 WO PCT/DE1993/000189 patent/WO1993020606A1/en active IP Right Grant
- 1993-02-26 DE DE59303328T patent/DE59303328D1/en not_active Expired - Fee Related
- 1993-02-26 CA CA002133213A patent/CA2133213A1/en not_active Abandoned
- 1993-02-26 EP EP93905153A patent/EP0634063B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0634063B1 (en) | 1996-07-24 |
| WO1993020606A1 (en) | 1993-10-14 |
| ATE140826T1 (en) | 1996-08-15 |
| EP0634063A1 (en) | 1995-01-18 |
| DE59303328D1 (en) | 1996-08-29 |
| DE4211157A1 (en) | 1993-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |