US3702421A - Choke unit - Google Patents

Choke unit Download PDF

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Publication number
US3702421A
US3702421A US186286A US3702421DA US3702421A US 3702421 A US3702421 A US 3702421A US 186286 A US186286 A US 186286A US 3702421D A US3702421D A US 3702421DA US 3702421 A US3702421 A US 3702421A
Authority
US
United States
Prior art keywords
choke
housing
electric
unit according
sealing compound
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
US186286A
Other languages
English (en)
Inventor
Andries Theodorus Grul
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.)
FERGUSON TRANSFORMERS Pty Ltd
Original Assignee
FERGUSON TRANSFORMERS Pty Ltd
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 FERGUSON TRANSFORMERS Pty Ltd filed Critical FERGUSON TRANSFORMERS Pty Ltd
Application granted granted Critical
Publication of US3702421A publication Critical patent/US3702421A/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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • 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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings

Definitions

  • the casing was, then either suspended on the lamp pole or secured within a cavity'or recess of such a pole.
  • an electric choke unit comprising ahousing, an electric choke embedded in a sealing compound filling a portion of said housing a support member fixed in the core of. said choke and extending beyond said sealing compound, and ancillary equipment mounted on said support member, said housing forming aheat sink for said choke.
  • FIGS. 1 to 3 show three different views of an electric choke unit according to embodiment of the invention.
  • FIG. 4 is the circuit diagram of the unit shown in' 2 used as a cover or shield for the choke 4-itself and a top part 3 forming a cover for the ancillary components.
  • the housing l- may be spun fromaluminum to keep its weight as low as possible and the top part 3 has a rim 5 of slightly greater diameter than the bottom part 2 to fit over the bottom part 2, being secured thereto by wing nuts 6 or other suitable fixing means which permit easy removal of the top part 3.
  • a sealing ring 7 inserted between the top part 3 and bottom part 2 makes the joint watertight.
  • the choke 4 is secured in the bottom part 2 of the housing by brackets 8 fixed to the core 9 of the choke 4 and heldagainst the housing wall by means of screws l0 passing through the housing wall and an external bracket 11 designed to mount the choke unit ona pole or the like.
  • the bottom part 2 of the housing 1 is filled with a suitable compound 12, for example in epoxy resin, which completely encloses the choke 4 with its core 9 to exclude any air.
  • Conduit inlets 13 are provided on opposite sides of the housing bottom part 2 just above the level of the epoxy resin 12 to pass the connections from the power supply and the lamp into the housing 1.
  • suitable apertures 14 are provided in the bottom 2 of the housing and conduits are inserted through the'apertures passing along the choke and throughthe sealing compound. and being held in position'thereby.
  • the ancillary equipment is mounted on a metal support 15 consisting of a metal plate which is inserted with one end between the laminations of the core 9 of the choke 4and secured therein by screws (not shown) passing through the laminations.
  • The'support 15 extends upwardly into the top part 3 of the housing 1 so that on removal of the top part 3 all components mounted on the support 15 are easily accessible.
  • the metal plate of the support l5 can have an overlay .of insulating material 16 on the side on which the additional equipment is mounted.
  • the support 15 carries only a fuse-holder 17 with fuse, a terminal block .18 for connection with 'tappings on the choke, a terminal block 19 mounted on an angle bracket 20 for connection to the lamp and power supply respectively and an earth terminal 21.
  • the earth terminal 21 is metallically connected to the support plate which inturn is in metallic contact with the choke core, and as this core is connected by metal brackets .to the housing and the external mounting bracket, connection of the terminal with earth will at the same time connect earth to all metal parts of the choke unit.
  • the leads from the choke itself, passing through the epoxy resin, are connected in normal manner with the terminal block and fuse holder respectively.
  • this latter capacitor-22 can be mounted on the rear of the support plate 15 within the top part 3 of the housing.
  • the choke 4 is provided with tappings whichare connected with the terminal block 18 to "make the unit adaptableto different supply voltages.
  • the power leads A and N are connected to the terminalblock 19 which is also designed to accept the connections from a lamp 23.
  • the fuse 17 is connectable to any of the tappings on terminal block 18, and the capacitor 22 is connected between the fuse l7 and the power supply if a correction of the power factor is required.
  • FIG. 5 The modification shown in FIG. 5 is designed for cases where the housing 1 is to be supported by a bracket 24.
  • the socket for lamp 23 (FIG. 4) can be mounted directly on the bottom of housing 1.
  • FIG. 7 shows an arrangement in which the housing 1 has no outside mounting bracket but has a recess25 at part and being releasably secured thereto, and a sealing ring interposed between said parts.
  • An electric choke unit according to claim 1 wherein the ancillary equipment comprises terminal blocks, a fuse holder incorporating a fuse, and an earth terminal.
  • An electric choke unit according to claim 1 wherein the choke has choke brackets secured to its core, said brackets contacting the inner surface of said housing, a choke unit mounting bracket being provided at the outer surface of said housing, said mounting bracket being fixed to said choke brackets through apertures in said housing.
  • An electric choke unit according to claim 1 wherein the housing is provided with cable inlet openings on opposite sides thereof and above said sealing compound.
  • An. electric'choke unit according to claim 1 wherein cable inlet channels are provided adjacent the a choke and passing through the sealing compound and the corresponding end of the housing.
  • An electric choke unit comprising a housing having two cylindrical parts spun from aluminum, one part over-lapping the other part and being releasably secured thereto, an electric choke embedded in a sealing compound filling a portion of said housing, a support member fixed in the core of said choke and extending beyond said sealing compound, choke brackets secured to said core, said brackets contacting the inner surface of said housing, a choke unit mounting bracket at the outer surface of said housing and being fixed to said choke brackets through apertures in said housing,
  • said ancillary equipment comprising terminal blocks, a condenser, a fuse holder and an earth terminal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuses (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
US186286A 1970-10-06 1971-10-05 Choke unit Expired - Lifetime US3702421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPA276470 1970-10-06

Publications (1)

Publication Number Publication Date
US3702421A true US3702421A (en) 1972-11-07

Family

ID=3764710

Family Applications (1)

Application Number Title Priority Date Filing Date
US186286A Expired - Lifetime US3702421A (en) 1970-10-06 1971-10-05 Choke unit

Country Status (6)

Country Link
US (1) US3702421A (it)
DE (1) DE2148780A1 (it)
FR (1) FR2111060A5 (it)
GB (1) GB1308879A (it)
IT (1) IT939507B (it)
ZA (1) ZA716635B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6144562A (en) * 1998-10-06 2000-11-07 Daktronics, Inc. Component mounting bracket system
WO2009015066A2 (en) * 2007-07-20 2009-01-29 Diversified Technology, Inc. Modular vehicle power system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9104298U1 (de) * 1991-04-09 1991-07-18 Zumtobel Ag, Dornbirn Erdungsteil
DE9314421U1 (de) * 1993-09-23 1993-12-16 Patra Patent Treuhand Betriebsgerät für elektrische Lampen
DE19813292A1 (de) * 1998-03-26 1999-09-30 Hella Kg Hueck & Co Anordnung zur hochspannungsfesten Isolierung mindestens eines Bauteiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740905A (en) * 1954-01-04 1956-04-03 Gen Electric Reactive device
US3160836A (en) * 1960-07-01 1964-12-08 Guerin Engineering Inc Electrohydraulic actuator
US3516040A (en) * 1968-08-05 1970-06-02 Micron Sealing Corp Transformer structure
US3646401A (en) * 1971-01-29 1972-02-29 Advance Transformer Co Weatherproof unpotted ballast construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740905A (en) * 1954-01-04 1956-04-03 Gen Electric Reactive device
US3160836A (en) * 1960-07-01 1964-12-08 Guerin Engineering Inc Electrohydraulic actuator
US3516040A (en) * 1968-08-05 1970-06-02 Micron Sealing Corp Transformer structure
US3646401A (en) * 1971-01-29 1972-02-29 Advance Transformer Co Weatherproof unpotted ballast construction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6144562A (en) * 1998-10-06 2000-11-07 Daktronics, Inc. Component mounting bracket system
WO2009015066A2 (en) * 2007-07-20 2009-01-29 Diversified Technology, Inc. Modular vehicle power system
US20090097292A1 (en) * 2007-07-20 2009-04-16 Diversified Technology, Inc. On-board vehicle power
WO2009015066A3 (en) * 2007-07-20 2009-12-17 Diversified Technology, Inc. Modular vehicle power system
US7952225B2 (en) 2007-07-20 2011-05-31 Diversified Technology, Inc. Modular vehicle power system

Also Published As

Publication number Publication date
DE2148780A1 (de) 1972-06-29
GB1308879A (en) 1973-03-07
IT939507B (it) 1973-02-10
ZA716635B (en) 1972-06-28
FR2111060A5 (it) 1972-06-02

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