CA1092693A - Three - phase tap-changing switching device - Google Patents
Three - phase tap-changing switching deviceInfo
- Publication number
- CA1092693A CA1092693A CA299,431A CA299431A CA1092693A CA 1092693 A CA1092693 A CA 1092693A CA 299431 A CA299431 A CA 299431A CA 1092693 A CA1092693 A CA 1092693A
- Authority
- CA
- Canada
- Prior art keywords
- switching device
- housing
- transformer
- tap
- oil
- 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.)
- Expired
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
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
Abstract of Disclosure A three-phase tap-changing switching device immersed in a body of oil separate from the body of oil in which the trans-former is immersed that is connected to, and cooperates with, the switching device. The tap-changing switching device in-cludes an oil-tight substantially cylindrical sub-housing effecting a separation of the oil space of the transformer from the oil space o f the switching device. Said sub-housing is arranged within ? housing proper having a flanged lateral opening that contains a lattice structure supporting the ends of the conductors conductively interconnecting said transformer and the terminal o f said tap-changing switching device.
Description
~ ?~
Back~round of the Invention This invention relates to three-phase tap-chang1ng switching devices. Such switching devices are generally oil imrnersed.
They are affixed by a flanged member to the oil tank of a trans-former which is provided with a similar flanged member. Both flanged members are adapted to cooperate and to provide passage-ways for conductively interconnecting the tap-changing swit~hing device with the transformer whose winding is, or whose windings are, tapped. In such a composite device including a tapped trans-former winding under oil, and a switching device which is oilimmersed, the body of oil of the transformer must be separate from the body of oil of the switching device since the latter is gradually co~taminated by products of arcing. The separation ~, o~ the oil space of the transformer from that of the switching device is generally effected by an insulating plate arranged between the oil tank of the transformer and the oil tank housing the switchiQg device- The insulating plate is affixed to the aforementioned flanged member of the oil tank of the switching device~ It forms part of a bushi~g structure for interconnecting the tra~sformer a~d the switching device. The insulating plate for separating the body of oil of a transformer ~rom the body of oil of a switching device must meet high standards. It must be mechanically strong, oil-tight, and have a high dielectric strength to avoid electrical breakdowns between adjacent con-ductors. To this end the insulating plates separating the oil ; spaces o~ the transformer and o~ the switching device may be provided with collars surrounding the terminal members thereo~O
The separation of the body of oil of the transformer and the body of oil of the tap-changing switching device is more fully 30 described in U.S.Patent 3,805,205 to Alexander Bleibtreu ~or MEANS FOR SEPARATING THE BODY OF OIL OF A TRANSFORMER AND THE
~ BODY OF OI~ OF A TAP-C~ANGING SWITCH, issued on April 16,19740 ': ;
Back~round of the Invention This invention relates to three-phase tap-chang1ng switching devices. Such switching devices are generally oil imrnersed.
They are affixed by a flanged member to the oil tank of a trans-former which is provided with a similar flanged member. Both flanged members are adapted to cooperate and to provide passage-ways for conductively interconnecting the tap-changing swit~hing device with the transformer whose winding is, or whose windings are, tapped. In such a composite device including a tapped trans-former winding under oil, and a switching device which is oilimmersed, the body of oil of the transformer must be separate from the body of oil of the switching device since the latter is gradually co~taminated by products of arcing. The separation ~, o~ the oil space of the transformer from that of the switching device is generally effected by an insulating plate arranged between the oil tank of the transformer and the oil tank housing the switchiQg device- The insulating plate is affixed to the aforementioned flanged member of the oil tank of the switching device~ It forms part of a bushi~g structure for interconnecting the tra~sformer a~d the switching device. The insulating plate for separating the body of oil of a transformer ~rom the body of oil of a switching device must meet high standards. It must be mechanically strong, oil-tight, and have a high dielectric strength to avoid electrical breakdowns between adjacent con-ductors. To this end the insulating plates separating the oil ; spaces o~ the transformer and o~ the switching device may be provided with collars surrounding the terminal members thereo~O
The separation of the body of oil of the transformer and the body of oil of the tap-changing switching device is more fully 30 described in U.S.Patent 3,805,205 to Alexander Bleibtreu ~or MEANS FOR SEPARATING THE BODY OF OIL OF A TRANSFORMER AND THE
~ BODY OF OI~ OF A TAP-C~ANGING SWITCH, issued on April 16,19740 ': ;
-2-, .
.
.D'~ 3 Reference may ~e had to this patent in regard to the prior art to be superseded by the present invention.
Summar~__f the_Invention . _ .
According to this invention the prior art insulating plate is dispensed with. The tap-changing switching device includes an oil-tight substantially cylindrical sub-housing effecting a separation of the oil space of the transformer from the oil space of the switching device. Said sub-housing is arranged within a housing proper having a flanged lateral opening that containS a lattice structure supporting the ends of conductors conductively interconnecting said transformer and the terminals of said swi~ching device.
Brief Description of the Drawings Fig.l is a schemati~ slde elevation of a three-phase tap-changing switehing device according to the present invention;
Figo2 is substantially an end view of the structure of Fig.l seen in the direction of the arrow R; and -;
Fig.3 is a schematic horizontal section of the structure shown in Fig. lo Descrip~ion of Preferred Embodiment , _ _ . . .
As shown in the drawi~gs, the switching device is enclosed in a~ oil-tight cylindrical sub-housiag 3 which, in turn, is -arranged i~ a housing 1 proper which is semi-cylindrical, ousing 1 is provided with a flanged lateral opening 2 co-operating with the flanged lateral opening 7 in the trans~ormer tankO Su~-housing 3 contains the tap-changing switching device ~ --which may be designed substantially as disclosed in U.S.PateQt
.
.D'~ 3 Reference may ~e had to this patent in regard to the prior art to be superseded by the present invention.
Summar~__f the_Invention . _ .
According to this invention the prior art insulating plate is dispensed with. The tap-changing switching device includes an oil-tight substantially cylindrical sub-housing effecting a separation of the oil space of the transformer from the oil space of the switching device. Said sub-housing is arranged within a housing proper having a flanged lateral opening that containS a lattice structure supporting the ends of conductors conductively interconnecting said transformer and the terminals of said swi~ching device.
Brief Description of the Drawings Fig.l is a schemati~ slde elevation of a three-phase tap-changing switehing device according to the present invention;
Figo2 is substantially an end view of the structure of Fig.l seen in the direction of the arrow R; and -;
Fig.3 is a schematic horizontal section of the structure shown in Fig. lo Descrip~ion of Preferred Embodiment , _ _ . . .
As shown in the drawi~gs, the switching device is enclosed in a~ oil-tight cylindrical sub-housiag 3 which, in turn, is -arranged i~ a housing 1 proper which is semi-cylindrical, ousing 1 is provided with a flanged lateral opening 2 co-operating with the flanged lateral opening 7 in the trans~ormer tankO Su~-housing 3 contains the tap-changing switching device ~ --which may be designed substantially as disclosed in U.S.PateQt
3,67I,687 to Alexander Bleibtreu for TRANSFER SWITCH FOR TAP-CiHANGING REGULATING TRANSFOi~MERS INCLUDING LOST MOTION INTER~
CONNECTION DRIVING MECi~i~NISM, issued Ju~e ~0,1972, or in U.S.
Patent 3,739,111 to Georg Wittenzeller et al for TRANSFER
SWITCH FOR TAP-CH~NGING REGULATING TRANSFORMERS WITH IMPROVED ~ ~.
~ .
CONTACT STP~UCTU~E~ issued June 12,19730 The tap-changing switching device enclosed in sub-housing 3 Is attached to a switch head 4 which, in turn, is suspended in housing 1. Re-~erence numeral 5 has been applied to indicate a motor drive af~ixed by a flange to housing 1. The drive gear for operating the tap-changing switching device has not been shown in the drawing, except for a coupling 6 interposed between motor drive 5 and switch head 4, since such drive gears are well known in the artO
The opening 2 in the flanged portion of tank 1 and the ~; opening 7 in the flanged portion of the transformer tank are o~
equal size and register when housing 1 is aEfixed to the trans-former tank~ The opening 2 in housing 1 proper contains a lattice struc~ure including three horizontal cable supports 8.
The lattice structure supports the ends of conductors or cables conductively intercon~ecting the transformer and the tap-changi~g switching device inside of sub-housing 3. The lattice structure inside of opening 2 includes three horizontal cable - : supports, one for each o the three phases, Each cable support 8 is provided with a plurality of notches 10 for receiving cables conductively interconnecting the transformer and the stationary - terminals 9 of the switching device inside o~ sub-housing 30 . Cables 12 connected to terminals 9 are inserted lnto notches 10.
Reference numerals 11 have beeo applied to indicate the ends of cables 12 projecting beyond supports 80 These ends are in-sulated and provided with squashed sleeve members 13 receiving the ends of the corresponding cables coming from the transformerO
This makes it possible to conductively connect cables 12 with . corresponding cables c~ing from the transformer by simple squashing operations of sleeve members 13.
. The switching device inside of oil-tight sub-housing 3 may be suppor~ed, as mentioned above, by switch head 4, which is . ~_ .:
the conventional way of support.ing the switching device. As an alternative, the bottom 14 o~ houslng 1 may be provided with an opening 15 and support s.ub-housing 3. Opening 15 may be normally closed by a cover 16. This facilitates the maintenance of the tap-changing switch, which may be rendered accessible from the bottom as well as from the top of the switch structure~
We claim as our invention:
~.' ' .
.
. .. .
;.
~, : ~
:' ~ ;', ,' ' ' , ,~.....
_5_
CONNECTION DRIVING MECi~i~NISM, issued Ju~e ~0,1972, or in U.S.
Patent 3,739,111 to Georg Wittenzeller et al for TRANSFER
SWITCH FOR TAP-CH~NGING REGULATING TRANSFORMERS WITH IMPROVED ~ ~.
~ .
CONTACT STP~UCTU~E~ issued June 12,19730 The tap-changing switching device enclosed in sub-housing 3 Is attached to a switch head 4 which, in turn, is suspended in housing 1. Re-~erence numeral 5 has been applied to indicate a motor drive af~ixed by a flange to housing 1. The drive gear for operating the tap-changing switching device has not been shown in the drawing, except for a coupling 6 interposed between motor drive 5 and switch head 4, since such drive gears are well known in the artO
The opening 2 in the flanged portion of tank 1 and the ~; opening 7 in the flanged portion of the transformer tank are o~
equal size and register when housing 1 is aEfixed to the trans-former tank~ The opening 2 in housing 1 proper contains a lattice struc~ure including three horizontal cable supports 8.
The lattice structure supports the ends of conductors or cables conductively intercon~ecting the transformer and the tap-changi~g switching device inside of sub-housing 3. The lattice structure inside of opening 2 includes three horizontal cable - : supports, one for each o the three phases, Each cable support 8 is provided with a plurality of notches 10 for receiving cables conductively interconnecting the transformer and the stationary - terminals 9 of the switching device inside o~ sub-housing 30 . Cables 12 connected to terminals 9 are inserted lnto notches 10.
Reference numerals 11 have beeo applied to indicate the ends of cables 12 projecting beyond supports 80 These ends are in-sulated and provided with squashed sleeve members 13 receiving the ends of the corresponding cables coming from the transformerO
This makes it possible to conductively connect cables 12 with . corresponding cables c~ing from the transformer by simple squashing operations of sleeve members 13.
. The switching device inside of oil-tight sub-housing 3 may be suppor~ed, as mentioned above, by switch head 4, which is . ~_ .:
the conventional way of support.ing the switching device. As an alternative, the bottom 14 o~ houslng 1 may be provided with an opening 15 and support s.ub-housing 3. Opening 15 may be normally closed by a cover 16. This facilitates the maintenance of the tap-changing switch, which may be rendered accessible from the bottom as well as from the top of the switch structure~
We claim as our invention:
~.' ' .
.
. .. .
;.
~, : ~
:' ~ ;', ,' ' ' , ,~.....
_5_
Claims (4)
1. A three-phase tap-changing switching device arranged in a housing having a flanged lateral connecting member adapted to cooperate with a corresponding flanged lateral opening in the housing of a tapped three-phase transformer to allow electrical connections to be established between said tap-changing switch-ing mechanism and said transformer wherein (a) said tap-changing switching device is arranged inside of an oil-tight substantially cylindrical sub-housing effecting a separation of the oil space of said transformer and the oil space of said switching device, and dispensing with solid in-sulating means for separating said oil space of said transformer from the oil space of said switching device; and wherein (b) said sub-housing is arranged within a housing proper having a flanged lateral opening that contains a lattice struc-ture supporting the ends of the conductors conductively inter-connecting said transformer and the terminals of said switching device.
2. A three-phase tap-changing switching device as specified in claim 1 wherein said flanged lateral opening is provided with a horizontal cable support for each of the three phases, each of said cable support having a plurality of notches for receiving cables conductively interconnecting said transformer and the stationary terminals of said switching device.
3. A three-phase switching device as specified in claim 2 wherein the ends of said cables are insulated and provided with squashed sleeve members.
4. A three-phase switching device as specified in claim 1 where-in said sub-housing rests on the bottom of said housing proper, and wherein the bottom of said housing proper is provided with a cover for getting access to said switching device from the lower end thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2712484.1 | 1977-03-22 | ||
| DE19772712484 DE2712484A1 (en) | 1977-03-22 | 1977-03-22 | BUILT-ON TICKET SWITCHES FOR STEPPED TRANSFORMERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1092693A true CA1092693A (en) | 1980-12-30 |
Family
ID=6004310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA299,431A Expired CA1092693A (en) | 1977-03-22 | 1978-03-21 | Three - phase tap-changing switching device |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS53117712A (en) |
| AU (1) | AU515962B2 (en) |
| BE (1) | BE865155A (en) |
| CA (1) | CA1092693A (en) |
| DE (1) | DE2712484A1 (en) |
| FR (1) | FR2385201A1 (en) |
| GB (1) | GB1576786A (en) |
| IN (1) | IN148169B (en) |
| NL (1) | NL7802925A (en) |
| SE (1) | SE415810B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4216034C1 (en) * | 1992-05-15 | 1993-12-09 | Reinhausen Maschf Scheubeck | Step switch for a preferably cast-resin-insulated step transformer |
| DE4237242A1 (en) * | 1992-05-15 | 1994-05-05 | Reinhausen Maschf Scheubeck | Step switch for a preferably cast-resin-insulated step transformer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB339400A (en) * | 1929-09-30 | 1930-12-11 | Harold Diggle | Improvements in electric tapping switches |
| GB350087A (en) * | 1930-03-22 | 1931-06-11 | Henleys Telegraph Works Co Ltd | Improvements in means for supporting electric cables |
| FR1389208A (en) * | 1963-03-18 | 1965-02-12 | Ass Elect Ind | Enhancements to take-charge changeover switches |
| US3327176A (en) * | 1965-01-04 | 1967-06-20 | Westinghouse Electric Corp | Electric switchgear apparatus with improved terminal means |
| GB1114868A (en) * | 1965-10-21 | 1968-05-22 | Ass Elect Ind | Improvements in or relating to electrical on-load tap-changers |
| US3764891A (en) * | 1972-07-06 | 1973-10-09 | Westinghouse Electric Corp | Tap changing apparatus with prevention of floating tapped winding |
| DE2523915A1 (en) * | 1975-05-30 | 1976-12-09 | Siemens Ag | Multiple wire clamping strip - is L-shaped in cross section and flexible, so that slots open for insertion of wires when bent |
-
1977
- 1977-03-22 DE DE19772712484 patent/DE2712484A1/en not_active Ceased
-
1978
- 1978-03-08 IN IN178/DEL/78A patent/IN148169B/en unknown
- 1978-03-16 GB GB10396/78A patent/GB1576786A/en not_active Expired
- 1978-03-17 NL NL7802925A patent/NL7802925A/en not_active Application Discontinuation
- 1978-03-17 AU AU34237/78A patent/AU515962B2/en not_active Expired
- 1978-03-20 SE SE7803151A patent/SE415810B/en unknown
- 1978-03-20 JP JP3118678A patent/JPS53117712A/en active Pending
- 1978-03-21 BE BE186152A patent/BE865155A/en not_active IP Right Cessation
- 1978-03-21 CA CA299,431A patent/CA1092693A/en not_active Expired
- 1978-03-22 FR FR7808410A patent/FR2385201A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB1576786A (en) | 1980-10-15 |
| FR2385201B1 (en) | 1985-03-22 |
| SE7803151L (en) | 1978-09-23 |
| AU3423778A (en) | 1979-09-20 |
| SE415810B (en) | 1980-10-27 |
| DE2712484A1 (en) | 1978-09-28 |
| AU515962B2 (en) | 1981-05-14 |
| FR2385201A1 (en) | 1978-10-20 |
| BE865155A (en) | 1978-07-17 |
| IN148169B (en) | 1980-11-22 |
| JPS53117712A (en) | 1978-10-14 |
| NL7802925A (en) | 1978-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |