US3818400A - Filter choke for high electrical voltages and large outputs - Google Patents

Filter choke for high electrical voltages and large outputs Download PDF

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Publication number
US3818400A
US3818400A US00348090A US34809073A US3818400A US 3818400 A US3818400 A US 3818400A US 00348090 A US00348090 A US 00348090A US 34809073 A US34809073 A US 34809073A US 3818400 A US3818400 A US 3818400A
Authority
US
United States
Prior art keywords
selector switch
winding
tank
filter choke
closure
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 - Lifetime
Application number
US00348090A
Other languages
English (en)
Inventor
H Linnert
W Mueller
G Weigel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Transformatoren Union AG
Original Assignee
Transformatoren Union AG
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 Transformatoren Union AG filed Critical Transformatoren Union AG
Application granted granted Critical
Publication of US3818400A publication Critical patent/US3818400A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • H01F37/005—Fixed inductances not covered by group H01F17/00 without magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/002—Arrangements provided on the transformer facilitating its transport
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • 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

Definitions

  • a filter choke is formed of a magnetically unshielded winding, a step selector switch electrically connected I to the winding and a load selector switch electrically connected to the step selector switch.
  • the two switches aredisposed side-by-side in a tank which includes a top closure provided with an opening vertically above the step selector switch.
  • the winding is secured externally to the closure above the opening and is surrounded by a bushing insulator made of an electrically insulating material.
  • the bushing insulator is supported by the closure and is in axial alignment with the closure opening.
  • a load selector switch and a step selector switch are mounted side-byside in a tank which is closed by a top closure.
  • a bushing insulator made of a solid insulating material and arranged above the step selector on the closure.
  • the bushing insulator surrounds the magnetically unshielded winding of the filter choke.
  • the inner spaces enclosed by the tank and by the bushing insulator are connected to one another by means of an opening which is provided in the closure and which is coaxial with the bushing insulator.
  • the filter choke arrangement according to the invention is very advantageous in that both a magnetic shielding and a main electrical insulation for the winding may be omitted.
  • a voltage control is accomplished along the surface of the bushing insulator which, in conventional devices, could be accomplished only by means of a complex controlled duct, such as a condensator duct.
  • the stepping switch according to the invention is divided into sideby-side disposed two structural groups, that is, a load selector switch and a step selector switch so that by virtue of the reduced overall structural height of the filter choke the high-voltage duct may remain in place on the tank even during shipment of the device.
  • FIG. 1 is a schematic side elevational sectional view of a preferred embodiment of the invention.
  • FIG. 2 is a plan view of the same embodiment.
  • the axes of the step selector switch 5 and the load selector switch 6 are parallel to one another and normal to the base 8.
  • an opening 9a In the closure 9 vertically above the step selector switch 5 and in axial alignment therewith there is provided an opening 9a.
  • a bushing insulator or insulating hood 2 On the closure 9 externally of the tank 4 and in axial alignment with the opening 9a there is disposed a bushing insulator or insulating hood 2 which is made preferably of porcelain.
  • a coreless winding 1 designed as a tubular winding and made of disc coils is arranged concentrically with respect to the bushing insulator '9 and is disposed on insulating rings 10 above the opening 9a of the closure 9.
  • the axially aligned winding 1, bushing insulator 2 and step selector switch 5 are situated at one end of the tank 4.
  • an external terminal post 3 which is electrically connected with the upper terminals of the winding 1 and to which there is coupled an external high-voltage line (not shown).
  • the electric conductors 10a required for an electrical connection between the step selector switch 5 and the winding 1 pass through the opening 9a.
  • the inner spaces enclosed by the tank 4 and the bushing insulator 2 are completely filled with a cooling and insulating liquid, such as transformer oil which, as it heats up during operation, is withdrawn from the upper part of the bushing insulator 2 through a conduit 7 that projects upwardly beyond the winding 1 and a suction conduit 12.
  • the conduit 7 is made of a nonmagnetic insulating material; Subsequent to cooling, the oil is reintroduced into the tank 4 through a coupling nipple 11 (FIG. 2).
  • a gas dome 13 Adjacent the bushing insulator 2, at the other end of the tank 4 above the load selector switch 6 and an opening 9b provided in the closure 9, thereis provided a gas dome 13 which receives the gases generated during switching for preventing these gases from penetrating into the space surrounding the winding 1.
  • a stepping switch-operating device 14 To the outer wall face of the tank 4 adjacent the load selector switch 6 there is secured a stepping switch-operating device 14 which is mechanically connected to the load selector switch 6 and the step selector switch 5 as symbolically indicated by the dash-dot line 14a.
  • the lateral tank wall further supports a low voltage terminal 15.
  • the high voltage is practically linearly decreasing from the top downwardly within the bushing insulator 2.
  • a step selector switch electrically connected to said winding and disposed in said tank vertically below said bushing insulator e. a load selector switch electrically connected to said step selector switch and disposed in said tank in a side-by-side relationship with said step selector switch;
  • a filter choke as defined in claim 1 said winding having an upper end and a lower end, the improvement further comprising a stepped winding constituting said lower end, said stepped winding having taps electrically connected to said step selector switch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Transformer Cooling (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
US00348090A 1972-04-05 1973-04-05 Filter choke for high electrical voltages and large outputs Expired - Lifetime US3818400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2216325A DE2216325C3 (de) 1972-04-05 1972-04-05 Filterdrossel für hohe elektrische Spannungen und große Leistungen

Publications (1)

Publication Number Publication Date
US3818400A true US3818400A (en) 1974-06-18

Family

ID=5841045

Family Applications (1)

Application Number Title Priority Date Filing Date
US00348090A Expired - Lifetime US3818400A (en) 1972-04-05 1973-04-05 Filter choke for high electrical voltages and large outputs

Country Status (11)

Country Link
US (1) US3818400A (da)
BE (1) BE797652A (da)
CA (1) CA999048A (da)
CH (1) CH551080A (da)
DE (1) DE2216325C3 (da)
DK (1) DK142095C (da)
FR (1) FR2179067B1 (da)
GB (1) GB1424696A (da)
NL (1) NL7304658A (da)
NO (1) NO131106C (da)
SE (1) SE381949B (da)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949337A (en) * 1973-11-28 1976-04-06 Elphiac Self-induction device for generating harmonics
EP1895550A1 (en) * 2006-08-30 2008-03-05 Abb Research Ltd. A device for suppressing high frequency current or/and voltage components
US20160329168A1 (en) * 2014-01-28 2016-11-10 Maschinenfabrik Reinhausen Gmbh On-load tap changer according to the reactor switching principle
US20200203066A1 (en) * 2017-09-04 2020-06-25 Siemens Aktiengesellschaft Assembly for connection to a high-voltage system with adjustable impedance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2845463C3 (de) * 1978-10-19 1982-02-25 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Lastwähler für Stufentransformatoren
DE102012101988B4 (de) * 2012-03-09 2014-07-17 Maschinenfabrik Reinhausen Gmbh Anordnung einer Luft-Drosselspule und eines Umschalters sowie Verfahren zur Herstellung einer solchen Anordnung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1859969A (en) * 1929-05-18 1932-05-24 Condit Electrical Mfg Corp Unitary transforming and circuit interrupting apparatus
US2294712A (en) * 1939-08-04 1942-09-01 Gen Electric Transformer tap changer arrangement
US2668274A (en) * 1950-03-28 1954-02-02 Oerlikon Maschf Voltage transformer for hightension mains
US3175148A (en) * 1959-01-30 1965-03-23 Mc Graw Edison Co Stationary induction apparatus unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912366C (de) * 1941-05-06 1954-05-28 Aeg Regeltransformator
US2560002A (en) * 1945-07-27 1951-07-10 Allis Chalmers Mfg Co Voltage regulating control and apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1859969A (en) * 1929-05-18 1932-05-24 Condit Electrical Mfg Corp Unitary transforming and circuit interrupting apparatus
US2294712A (en) * 1939-08-04 1942-09-01 Gen Electric Transformer tap changer arrangement
US2668274A (en) * 1950-03-28 1954-02-02 Oerlikon Maschf Voltage transformer for hightension mains
US3175148A (en) * 1959-01-30 1965-03-23 Mc Graw Edison Co Stationary induction apparatus unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949337A (en) * 1973-11-28 1976-04-06 Elphiac Self-induction device for generating harmonics
EP1895550A1 (en) * 2006-08-30 2008-03-05 Abb Research Ltd. A device for suppressing high frequency current or/and voltage components
WO2008025424A1 (en) * 2006-08-30 2008-03-06 Abb Research Ltd A device for suppressing high frequency current or/and voltage components
US20160329168A1 (en) * 2014-01-28 2016-11-10 Maschinenfabrik Reinhausen Gmbh On-load tap changer according to the reactor switching principle
US10147563B2 (en) * 2014-01-28 2018-12-04 Maschinenfabrik Reinhausen Gmbh On-load tap changer according to the reactor switching principle
US20200203066A1 (en) * 2017-09-04 2020-06-25 Siemens Aktiengesellschaft Assembly for connection to a high-voltage system with adjustable impedance
US11594368B2 (en) * 2017-09-04 2023-02-28 Siemens Energy Global GmbH & Co. KG Assembly for connection to a high-voltage system with adjustable impedance

Also Published As

Publication number Publication date
NL7304658A (da) 1973-10-09
FR2179067A1 (da) 1973-11-16
CA999048A (en) 1976-10-26
DE2216325B2 (de) 1974-06-27
FR2179067B1 (da) 1978-06-30
CH551080A (de) 1974-06-28
BE797652A (fr) 1973-07-31
NO131106B (da) 1974-12-23
DK142095B (da) 1980-08-25
GB1424696A (en) 1976-02-11
DE2216325A1 (de) 1973-11-08
SE381949B (sv) 1975-12-22
DE2216325C3 (de) 1975-02-13
DK142095C (da) 1981-01-19
NO131106C (da) 1975-04-02

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