US3256408A - Fuse having an auxiliary arctransfer electrode - Google Patents

Fuse having an auxiliary arctransfer electrode Download PDF

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Publication number
US3256408A
US3256408A US289939A US28993963A US3256408A US 3256408 A US3256408 A US 3256408A US 289939 A US289939 A US 289939A US 28993963 A US28993963 A US 28993963A US 3256408 A US3256408 A US 3256408A
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United States
Prior art keywords
fuse
fuse conductor
conductor
auxiliary electrode
electrodes
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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
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US289939A
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English (en)
Inventor
Stumpe August Christian
Steimel Karl
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Licentia Patent Verwaltungs GmbH
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Licentia Patent Verwaltungs GmbH
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Publication date
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Publication of US3256408A publication Critical patent/US3256408A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/38—Means for extinguishing or suppressing arc

Definitions

  • the period of time during which the are continues to conduct the excess current may be as long as the duration of the fusing time or even a multiple thereof.
  • the so-called fuse integral fi dt which is proportional to the heat developed governs the fusing of the fuse conductor.
  • This fuse integral is nearly constant in the region of high excess currents and short fusing time.
  • the total value of the integral over the square of the excess current which is allowed to pass through the fuse increases considerably with higher excess currents because of the current conducting time of the fuse which is prolonged by the arc.
  • a device for protecting sensitive electrical devices as well as for protecting semiconductor elements is known in the art in which, when there is a disturbance, the component to be protected or the operating voltage source is bridged by a mechanical contact which may be termed a short-circuiter, so that the excess current is commutated into a side path and the component is thus bypassed by means of the short-circuiter. Also, with this device overloading with respect to the voltage of components which ice may be connected in parallel is avoided.
  • short-circuiters have a larger amount of inertia with respect to their responses as compared to safety fuses, and they require a larger amount of circuitry for their operation.
  • Another object of the invention is to provide a fuse device which, upon overload, operates quickly to prevent current flow to the device to be protected.
  • a fuse element for protecting sensitive electrical components or devices are preferably semiconductor elements, is constructed to have one or more fuse conductors.
  • the fuse element is provided with at least three electrodes and the fuse conductor or conductors are connected between two of these electrodes.
  • the other auxiliary electrode or electrodes are disposed at a distance which is spaced from the fuse conductor so that in normal operation there is no direct galvanic connection between the auxiliary electrodes and the fuse conductor.
  • FIGURE 1 is a diagrammatic view of the fuse device of the present invention.
  • FIGURE 2 is a circuit diagram indicating a circuit connection for the present invention.
  • FIGURE 3 is a diagrammatic view of another embodiment of the fuse device. I
  • FIGURE 4 is a diagrammatic view of a further embodiment of the fuse device.
  • FIGURE 5 is a diagrammatic view of still another embodiment wherein an annular auxiliary electrode is used.
  • FIG- URE 1 shows a fuse device wherein two electrodes-1 and 3 .are provided and a fuse conductor 2 is connected therebetween.
  • An auxiliary electrode 4 is arranged close to but spaced from the fuse conductor.
  • the two electrodes 1 and 3 connect the fuse conductor 2 into the circuit and in series with the electrical component 5 which is to be protected as well as with a source of electrical power and a load such as a resistance.
  • the auxiliary electrode 4 is connected with the portion of the element to be protected which faces away from the fuse conductor in such a manner that the conductor or circuit loop provided by the fuse conductor, the element to be protected, and the auxiliary electrode as well as'the connecting lines associated therewith provides an inductance which is as low as possible.
  • the fuse conductor 2 responds and melts or fuses so that an arc occurs between the two electrodes 1 and 3 or between the ends of the residual fuse conductor portions. Because of the different potentials occurring at electrodes 1 and 3 and at the auxiliary electrode 4 and the forces thereby created, a transfer of the arc onto the auxiliary electrode .4 is provided.
  • the conductor loop which includes the electrode corwhich is to be-protected, the auxiliary electrode 4, and
  • connection lines associated therewith has only a very small inductance and therefore only very little electrical energy can be stored in this conductor loop. Because of this the are between the electrode 3 facing the electrical component to be protected and the auxiliary electrode 4 is extinguished at substantially the same time as transfer of the arc occurs. Thus, the circuit including the component to be protected is already interrupted and the excess current is commutated by means of the auxiliary electrode 4 into the parallel circuit and thus, the component to be protected is bypassed. The are continues between the electrode facing away from the component to be protected, for example, the electrode 1 and the auxiliary electrode until the voltage necessary for maintaining the arc is no longer present.
  • a particularly definitive or abrupt response of the fuse conductor and thus an abrupt fusing can be provided by forming, as shown in FIGURE 3, one or more narrow portions or constrictions 6, 6, along the fuse conductor.
  • one or more auxiliary electrodes 4, 4" can be spaced in correspondence with one or several of the constrictions.
  • an advantageous structure is provided if the fuse conductor has constrictions with different fusing characteristics and in this situation an exceedingly advantageous commutation of the arc and thus of theexcess current can be provided if the auxiliary electrode or electrodes correspond to the constriction having the smallest cross section.
  • the fuse conductor may be embedded in sand or into a similar temperature constant and insulating material with the exception of the fuse conductor portion which is to cooperate with the auxiliary electrode or electrodes.
  • the fuse conductor may be arranged so that it is provided with two constrictions 6, 6' disposed parallel to one another and with one or more auxiliary electrodes 4- disposed therebetween, the magnetic forces created by current flow provide a particularly fast commutation of the two arcs which occur when both constrictions are fused or melted.
  • each deflection of the are created when the fuse conductor responds and melts can be utilized in an advantageous manner for commutating the are if, as shown in FIGURE 5, the auxiliary electrode 4a surrounds the fuse conductor so that it may be annular in form to completely encircle the conductor.
  • a fuse device for the protection of sensitive electrical components or devices and preferably for use in protecting semiconductor elements comprising, in com-- of constrictions having different fusing characteristics;
  • said fuse conductor being connected between two of said electrodes, at least one other electrode being an auxiliary electrode which is disposed to cooperate with the most sensitive constriction and being spaced from said fuse conductor thereby to prevent a direct galvanic connection-between the auxiliary electrode and the fuse conductor during normal operation, and to transfer the current from one electrode connected with the fuse conductor to the auxiliary electrode which acts as a base for the are which is created when the fuse conductor melts.
  • thermo constant insulating material is sand.
  • a fuse device for the production of sensitive electrical components or devices and preferably for use in protecting semiconductor elements comprising, in combination:
  • said fuse conductor being connected between two of said electrodes, the
  • auxiliary electrode which is disposed adjacent to and between two adjacent constrictions and which is spaced from said fuse conductor thereby to prevent a direct galvanic connection between the auxiliary electrode and the fuse conductor during normal operation, and to transfer the current from one electrode connected with the fuse conduct-or to the auxiliary electrode which acts as a base for the are which is created when the fuse conductor melts.
  • said two adjacent constrictions are provided on either side of the fuse conductor.

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  • Fuses (AREA)
US289939A 1962-06-22 1963-06-24 Fuse having an auxiliary arctransfer electrode Expired - Lifetime US3256408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL42288A DE1299356B (de) 1962-06-22 1962-06-22 Sicherungselement

Publications (1)

Publication Number Publication Date
US3256408A true US3256408A (en) 1966-06-14

Family

ID=7269815

Family Applications (1)

Application Number Title Priority Date Filing Date
US289939A Expired - Lifetime US3256408A (en) 1962-06-22 1963-06-24 Fuse having an auxiliary arctransfer electrode

Country Status (7)

Country Link
US (1) US3256408A (enrdf_load_stackoverflow)
AT (1) AT249779B (enrdf_load_stackoverflow)
CH (1) CH410137A (enrdf_load_stackoverflow)
DE (1) DE1299356B (enrdf_load_stackoverflow)
GB (1) GB1029395A (enrdf_load_stackoverflow)
NL (1) NL294395A (enrdf_load_stackoverflow)
SE (1) SE313363B (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334288A (en) * 1963-05-14 1967-08-01 Int Standard Electric Corp Fusing arrangement for a transistoregulated power supply
US3539961A (en) * 1969-04-11 1970-11-10 James F Worthington Isolator
US3813627A (en) * 1973-06-11 1974-05-28 Gen Electric Current limiting fuse having improved low current interrupting capability
EP0274893A3 (en) * 1987-01-10 1990-01-24 Y. S. Securities Limited Alternating current power circuit and fuse therefor
DE102014215279A1 (de) * 2014-08-04 2016-02-04 Phoenix Contact Gmbh & Co. Kg Schmelzsicherung für eine zu schützende Einrichtung
CN106887822A (zh) * 2015-12-16 2017-06-23 菲尼克斯电气公司 一种过压保护装置
US11201027B2 (en) 2017-02-01 2021-12-14 Dehn Se + Co Kg Triggered fuse for low-voltage applications

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9007239U1 (de) * 1990-06-30 1991-10-31 Wickmann-Werke GmbH, 5810 Witten Elektrische Sicherung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US685766A (en) * 1901-03-25 1901-11-05 Noble Jones Magnetic fuse cut-out.
GB190212292A (en) * 1902-05-29 1903-05-14 General Electric Co. Improvements in Electrical Cut-outs or Fuses
GB190503616A (en) * 1905-02-21 1906-02-21 Ernest Francis Moy Improvements in Fuses for Electric Current Circuits
US1055877A (en) * 1911-10-12 1913-03-11 Gen Electric Fuse cut-out.
GB104257A (en) * 1916-04-25 1917-03-01 Switchgear & Cowans Ltd Improvements in or relating to Magnetic Blow-out Fuses.
US2247084A (en) * 1938-12-02 1941-06-24 Gen Electric Sealing closure for fuses or the like
US2351969A (en) * 1942-10-24 1944-06-20 Westinghouse Electric & Mfg Co Protective device for electrical apparatus
US2400408A (en) * 1941-10-01 1946-05-14 Gardy Particip App Electrical circuit breaking fuse of the controlled operation type
US2488454A (en) * 1946-05-10 1949-11-15 Westinghouse Electric Corp Protection of parallel-connected condensers
US2504804A (en) * 1948-12-11 1950-04-18 Northern Electric Co Electrical protective apparatus
US2816989A (en) * 1954-05-05 1957-12-17 Parmiter Hope & Sugden Ltd Electric fuses

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092547B (de) * 1954-01-21 1960-11-10 Emil Lange Elektrische Hochleistungssicherung

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US685766A (en) * 1901-03-25 1901-11-05 Noble Jones Magnetic fuse cut-out.
GB190212292A (en) * 1902-05-29 1903-05-14 General Electric Co. Improvements in Electrical Cut-outs or Fuses
GB190503616A (en) * 1905-02-21 1906-02-21 Ernest Francis Moy Improvements in Fuses for Electric Current Circuits
US1055877A (en) * 1911-10-12 1913-03-11 Gen Electric Fuse cut-out.
GB104257A (en) * 1916-04-25 1917-03-01 Switchgear & Cowans Ltd Improvements in or relating to Magnetic Blow-out Fuses.
US2247084A (en) * 1938-12-02 1941-06-24 Gen Electric Sealing closure for fuses or the like
US2400408A (en) * 1941-10-01 1946-05-14 Gardy Particip App Electrical circuit breaking fuse of the controlled operation type
US2351969A (en) * 1942-10-24 1944-06-20 Westinghouse Electric & Mfg Co Protective device for electrical apparatus
US2488454A (en) * 1946-05-10 1949-11-15 Westinghouse Electric Corp Protection of parallel-connected condensers
US2504804A (en) * 1948-12-11 1950-04-18 Northern Electric Co Electrical protective apparatus
US2816989A (en) * 1954-05-05 1957-12-17 Parmiter Hope & Sugden Ltd Electric fuses

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334288A (en) * 1963-05-14 1967-08-01 Int Standard Electric Corp Fusing arrangement for a transistoregulated power supply
US3539961A (en) * 1969-04-11 1970-11-10 James F Worthington Isolator
US3813627A (en) * 1973-06-11 1974-05-28 Gen Electric Current limiting fuse having improved low current interrupting capability
EP0274893A3 (en) * 1987-01-10 1990-01-24 Y. S. Securities Limited Alternating current power circuit and fuse therefor
DE102014215279A1 (de) * 2014-08-04 2016-02-04 Phoenix Contact Gmbh & Co. Kg Schmelzsicherung für eine zu schützende Einrichtung
US10134555B2 (en) 2014-08-04 2018-11-20 Phoenix Contact Gmbh & Co. Kg Fuse for a device to be protected
CN106887822A (zh) * 2015-12-16 2017-06-23 菲尼克斯电气公司 一种过压保护装置
EP3188197A1 (de) * 2015-12-16 2017-07-05 PHOENIX CONTACT GmbH & Co. KG Überspannungsschutzgerät vom typ ii
CN106887822B (zh) * 2015-12-16 2019-01-15 菲尼克斯电气公司 一种过压保护装置
US11201027B2 (en) 2017-02-01 2021-12-14 Dehn Se + Co Kg Triggered fuse for low-voltage applications
US11764025B2 (en) 2017-02-01 2023-09-19 Dehn Se Triggered fuse for low-voltage applications

Also Published As

Publication number Publication date
CH410137A (de) 1966-03-31
AT249779B (de) 1966-10-10
SE313363B (enrdf_load_stackoverflow) 1969-08-11
GB1029395A (en) 1966-05-11
NL294395A (enrdf_load_stackoverflow)
DE1299356B (de) 1969-07-17

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