US2570567A - Electric circuit controlling device - Google Patents

Electric circuit controlling device Download PDF

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Publication number
US2570567A
US2570567A US26316A US2631648A US2570567A US 2570567 A US2570567 A US 2570567A US 26316 A US26316 A US 26316A US 2631648 A US2631648 A US 2631648A US 2570567 A US2570567 A US 2570567A
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United States
Prior art keywords
contact
arc
outlet
pin
chamber
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Expired - Lifetime
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US26316A
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English (en)
Inventor
Lange Emil
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Individual
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Individual
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Publication of US2570567A publication Critical patent/US2570567A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/128—Load break switches comprising a separate circuit breaker being operated by a separate mechanism interlocked with the sectionalising mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/167—Impedances connected with contacts the impedance being inserted only while opening the switch

Definitions

  • This invention relates to electric circuit controlling devices ofthe -kind in which 'an arc is employed to produce a stream of quenching medium by causing a rise of pressure in a chamber containing quenching medium whilst circuitbreaking is in progress.
  • Some forms of -the device according to the invention are 'particularly suitable for use as circuit-breakers, and other forms are suitable for use as switches.
  • One object of the invention is 'to provide an improved electric circuit controlling ⁇ devicewhich is simple, economical Ain manufacture, and etlicient in use.
  • Another object of the invention is to Vprovide an electric circuit controlling device in which during the action of breaking the circuit there is formed an arc producing ⁇ pressure in a chamber containing quenching medium, and Vthis pressure-producing arc is extinguished Vby short circuiting it or by-.passing it when it has 'caused a sufficient rise of pressure, and the quenching medium streams out ofthe chamber and is used to quench the second arc.
  • Yet another object is to provide simple means for obturating the outlet of the quenching medium chamber until a stream of quenching medium is required to quench the newly drawn second arc.
  • a still further object is to provide simple 'means for introducing a resistance-or an impedance or other current-resisting means into 'the circuit so as to reduce the amount of current in the second arc.
  • an elcctric-circuit-breaker or switch of the,kind in which an arc is employed to produce a stream of quenching medium by causing a rise of pressure in a chamber containing quenching medium, is so arranged that during the action of breaking a circuit a pressure-reducing arc is formed and this pressure-producing arc vis extinguished by short-circuiting it or lay-passing it when it has caused a suflicient rise of pressure inthe charnber and thestream of quenching medium is ⁇ used to quench a second arc.
  • the device may be -so arranged that after the pressure-producing arc has been extinguished a new .arc is struck by the point of a switch ⁇ pin in the outlet of thepressure rchamber and simultaneously the 4outlet is :freed so that the newly struck'arc is extinguished by Vthe ⁇ quench ing medium streaming from the pressure chamber.
  • kthe pressure-*producing are is Ystruck in one Iposition kanda second arc to be extinguished Aby the quenching medium is subsequently struck in -another position.
  • a conducting lelement is mounted on but 'insulated from a movable switch pin, and whilst the circuit is closed current "ows through the said conducting element.
  • circuit-breaking 'the ⁇ pressure-producing -arc is struck between the saidconducting element and a xed contact, and the current for the second arc flows 'through aresistance or the 4like so that the current which flows in the second arc is less than the current which ilows in the pressureproducing arc.
  • circuitbreaking means which 'form and extinguish a pressure-producing arc 'and a second arc, are operatively connected to 4a knifeeswitch or the like in ⁇ series therewith vso that during circuitbreaking ⁇ the knife-'switch is automatically opened after the circuit-'breaking means breaks the circuit.
  • Figure 2 a similar view of a second device kprovided with two sets of contacts
  • Figures 3 and 4 similar views of devices provided with resistances'or ⁇ the like, and
  • the lower part of the switch pin ⁇ 3 4 comprises an insulating tube 5 inwhich is mountedaconducting point I3 electrically connected through resistance material I5 to the conducting-body of the pin 3.
  • vI In the upper part of the chamber vI is v'a piston 1 loaded by a spring'awhich urges it'down.- wards, and the space 9 above the piston Icommunicateswith the'chamb'er "II through openings I0.
  • the fixed'contact 2 is mounted upon ametal block 6 which is fitted with a tapered insulating tube I4 to form the outlet passage 4.
  • the device is arranged in a circuit so that the pin 3 is electrically connected to one pole and the block 6 with the contact 2 are electrically connected to the other pole.
  • circuit-breaking the device acts as follows.
  • circuit-breaking commences, the device is in the position shown in Figure 1 in which the pin 3 is in contact with the contact 2 and substantially closes the outlet 4.
  • the pin 3 is moved upwards, manually or by suitable mechanical means, as rapidly as is convenient.
  • this pressure is sufficiently great to overcome the force of the spring 8 the piston 1 moves upwards and so the volume o the space under pressure is increased.
  • the quenching of the arcs is erlicient because the rst arc is extinguished by bypassing it and the second arc is subjected to the action of an adequate quantity of quenching medium whilst it is still newly formed and small and of reduced intensity because of the resistance material l5.
  • the insulating tube I4 ensures that an arc is not prematurely formed between the point I3 and the block 6.
  • the device illustrated in Figure 2 comprises a chamber 2
  • is formed by a base-plate 43 to which the one pole of the electric supply is connected and which carries xed contacts 22 and 23.
  • In the base-plate 43 s formed an outlet 24.
  • is secured a guide plate 46 having slots 40 and 4
  • In the guide plate 46 are secured bolts 38 and 39 for determining the end positions of the lever 34.
  • the pivot pin 32 secures a switch pin 21 to the lever 34.
  • the pivot pin 33 is secured in the head 28 of a second switch pin comprising an insulating tube 29 filled with resistance material 3
  • the pin 21, member 35, and pin 28 are connected to each other by a cable 31.
  • the device is in the current carrying position, the current path being from contact 42 through member 35, cable 31, pin 21, contact 22, and base-plate 43.
  • the member 35 is moved upwards in any suitable manner. This withdraws the pin 21 from the contact 22 so that an arc is formed and produces pressure in a gaseous or other quenching medium in the chamber 2
  • the tip 30 touches the contact 23 and so the are formed by pin 21 is by-passed, the current now flowing from member 35 through cable 31, pin head 28, resistance material 3
  • the tip 30 moves upwards from the contact 23 it forms a second arc which is of reduced strength and is immediately subjected to a stream of quenching medium passing out of the chamber 2
  • the device illustrated in Figure 3 comprises a mounting plate 5
  • the uppermost pillar carries a chamber 53 containing quenching medium.
  • In the top of the chamber 53 is an annular fixed contact 55 connected to a supply terminal 56.
  • the lower two pillars 52 carry a slotted guide plate 54 in which are fixed contacts 65 and 61.
  • a resistance 10 or the like is corniected between the contacts 65 and 61.
  • An insulation plate 12 is arranged behind the resistance 10.
  • Slidably mounted in the contacts 65 and 61 is a switch pin 60, the upper part of which is reduced and surrounded by insulation 1
  • the switch pin 60 can be moved up and down by an actuating lever 59 which acts upon a trunnion 53 guided in a slot 6
  • the poles of an electric circuit are connected to the terminals 56 and 66.
  • Figure 4 shows a device generally similar to that of Figure 3, but it is inverted and the chamber 53 is lled with liquid quenching medium and is surrounded by a store chamber 18 with which it communicates by apertures 19.
  • the chamber 18 has a terminal base plate 11 to which the iixed contact 55 is connected.
  • the device functions in a manner similar to that of Figure 3.
  • Figure 5 shows a switch in which circuit-breaking means and a knife-switch for circuit-making are arranged in series with each other.
  • the device comprises a casing 10
  • 02 carries a chamber
  • 04 carry a guide pla-te
  • 03 also carries a contact
  • 01 may be moved up and down by an actuating lever
  • 06 is secured to a driving shaft
  • 0 carries a cam disc with a cam lobe
  • 0 is a secondary shaft 'ia-,sagst 5
  • the arm I2I has ⁇ anabutment i
  • 22 iscoi-rnected by a spring H11 to 4the pivot 113.
  • 23 is arranged to limit movement 4of the larm
  • -8 is a notched disc
  • the arm 'H9 is connected vby a link 12d to the Aknife-switchblade ⁇ 2.
  • An insulating tube il is secured Anear the top of the switch pin
  • ⁇ Figure shows the normal current carrying position of the device.
  • Current ⁇ 'enters through the supply ⁇ terminal land passes through-contact -
  • ⁇ In 'order to break the circuit the ⁇ driving vshaft -
  • 67 moves downwards-andthelower edge of the insulating tube rlili passes -the lower'edge of thecontact t28 anarc is formed-and produces pressure within the chamber
  • the push rod I l5 engages 'the abuti ment lSl and rotates the secondary shaft H8 so that through the arm lH9 and the link
  • a spring-loaded piston or the like may be omitted from a device like that shown in Figure 1 or included in devices like those shown in the other figures.
  • an impedance or other current resisting means maybe used in accordance with the nature of the current for lowering the energy of the second arc.
  • Devices according to the invention may befadapted to make use of gaseous or liquid quenching media or materials which form gases when subjected to the heat of an arc.
  • An electric circuit controlling device comprising a chamber capable of containing quenching medium and having an outlet, ra first fixed contact adjacent to said outlet, arnovabl'es'witch lpin capable of 'projecting 'through and lthereby bbturating said outlet and of contacting said first hxed jcontact, a conducting member insulatedly ymounted on said switch pin and capable of contacting said Vrst fixed contact, a second xed contact contacting said conducting member, a third fixed contact contacting said switch pin, and electric current resisting means connected between said second and third fixed contacts, the arrangement being such that during circuitbreaking said conducting member withdraws from Jsaid lirst fixed contact thereby forming a -irstarc producing pressure within said chamber, then said switchpin contacts 4said first fixed contact thereby completing a current path from said second fixed contact through said current resisting means to said third vfixed contact, thence through said switch pin to said rst fixed contact, then said switch pin withdraws from said
  • a device as claimed in claim l comprising also a quenching medium container in communication with and capable of supplying quenching medium to and receiving quenching medium from said chamber.
  • An electric circuit controlling device comprising in combination a quenching medium receptacle having an outlet, a xed contact adjacent to said outlet, a partly insulated movable switch pin capable of projecting through and thereby obturating said outlet and of contacting said 'fixed contact, an actuating lever connected to and capable of actuating said switch pin, a driving shaft carrying said actuating lever, and knife-switch means in series with said switch pin and operatively connected with said driving shaft, the arrangement being such that during circuit-breaking said switch pin draws from said xed contact a first arc producing pressure within said receptacle, said switch pin then contacts said xed contact thereby by-passing said first arc, said switch pin then withdraws from said xed contact and from said receptacle outlet thereby drawing a second arc in the path of quenching medium leaving said receptacle, said second arc is quenched, and said knife switch means is then Opened.
  • a device as claimed in claim 3, comprising' a secondary shaft mounted for control by said driving'shaft a push-rod capable of transmitting motion in one direction to said secondary shaft vfrom said driving shaft and of permitting motion.
  • a detent mechanism operated by said driving shaft and capable. of holding said secondary shaft in a position of rest, and resilient means acting on said secondary shaft and tending to move said secondary shaft in a direction opposite to that of the motion transmitted to rsaid secondary shaft by said pushrod.
  • An electric circuit-breaker comprising a quenching-medium receptacle having an outlet
  • An electric circuit-breaker comprising a quenching-medium receptacle having an outlet, a stationary contact close to said outlet, a movable Contact consisting of a conducting body and a conducting tip secured by insulation to said body and electrically connected through resistance material to said body, a loaded piston within said receptacle and dividing said receptacle into two compartments, and a quenching medium storage vessel in communication with both of said compartments, said movable contact moving during circuit-breaking to form between said body and said stationary contact a iirst arc producing pressure in said receptacle between said piston and said outlet and to by-pass said iirst arc by forming a second arc between said tip and said stationary contact and in the path of quenching medium leaving said receptacle through said outlet.
  • An electric switch comprising a quenchingmedium receptacle having an outlet, a stationary contact at said outlet, and a movable contact which can pass partly through and thereby obstruct said outlet and can slide in contact with and withdraw from said stationary contact and can withdraw from said outlet, and an insulating shield on said movable contact whereby electrical Contact between said movable contact and said stationary contact is interrupted during part of the movement of said movable contact whereby as said movable contact moves during circuitbreaking a first arc producing pressure in said receptacle is drawn between said movable contact and said stationary contact while said movable Contact obstructs said outlet, and later said rst arc is by-passed when said movable contact comes into electrical connection with said stationary contact, and still later said movable contact withdraws from said stationary contact and said outlet whereby said outlet is cleared and a second arc is drawn out in the path of quenching medium leaving said receptacle through said outlet.
  • an electric circuit controlling device comprising a quenching-medium receptacle having an outlet, a substantially annular stationary contact defining part of the path of quenching medium passing out through said outlet, and a movable contact member capable of obstructing said outlet and contacting said stationary contact and of drawing from said stationary contact during circuit-breaking an arc producing pressure in said receptacle and of bypassing said arc by coming into electrical connection with said stationary contact and of clearing said outlet and drawing from said stationary contact a second arc in the path of quenching 6 medium passing out through said outlet.
  • An electric circuit controlling device cornprising in combination a chamber capable of containing quenching medium and having an outlet, means for forming during circuit-breaking a first arc producing pressure within said chamber, at least one fixed contact, at least one movable conductor capable of coming into electrical connection with said iixed contact and thereby bypassing and so extinguishing said first arc after it has produced pressure within said chamber, and circuit-breaking means forming after the by-passing of said first arc a second arc in the path of quenching medium passing out of said chamber through said outlet.
  • An electric circuit controlling device comprising in combination a chamber capable of con taining quenching medium and having an outlet, a fixed contact adjacent to said outlet, a movable compound pin capable of projecting through said outlet, means in mechanical connection with said movable compound pin for forming during circuit breaking a iirst arc producing pressure within said chamber, said compound pin having a conducting portion which comes into electrical connection with said iixed contact and thereby bypasses said first arc after it has produced pressure within said chamber and then withdraws from said iiXed contact drawing out a second arc in the path of quenching medium passing out of said chamber through said outlet.
  • An electric circuit controlling device comprising in combination a chamber capable of containing quenching medium and having an outlet, a iixed contact adjacent to said outlet, a movable compound pin capable of projecting through said outlet, separable contactors drawing out during circuitl breaking a first arc which produces pressure within said chamber', an insulating sleeve on said compound pin permitting said compound pin to make an initial movement without coming into electrical connection with said fixed Contact, and a conducting tip on said compound pin which comes into electrical connection with said iixed contact and thereby by-passes said iirst arc after it has produced pressure within said chamber and then withdraws from said iixed contact drawing out a second arc in the path of quenching medium passing out of said chamber through said outlet.
  • An electric circuit controlling device comprising a chamber capable of containing quenching medium and having an outlet, a first fixed contact within said chamber, a iirst switch pin having an end movable within said chamber and capable of contacting and withdrawing from said iirst fixed contact, a second fixed contact adjacent to said outlet, a second switch pin capable of contacting and withdrawing from said second fixed contact, said second switch pin consisting of a body, an insulating sleeve secured to said body, a switch pin point mounted in said sleeve, and resistance material electrically connecting said point to said body, mechanical means connected to and co-ordinating movements of said switch pins, and circuit means connected to said switch pins and contacts, the arrangement being such that during circuit-breaking said iirst switch pin forms a first arc producing pressure within said chamber, then said point of said second switch pin comes into electrical connection with said second iixed contact thereby by-passing said first arc, and then said switch pin point withdraws from said second xe
  • An electric circuit controlling device comprising in combination a chamber capable of containing quenching medium and having an outlet, a iixed contact adjacent to said outlet, a movable compound pin capable of projecting through said outlet, separable contactors drawing out during circuit breaking a first arc which produces pressure Within said chamber, an insulating sleeve on said compound pin permitting said compound pin to make an initial movement without coming into electrical connection with said xed Contact, and a conducting tip on said compound pin which comes into electrical connection with said fixed contact and thereby by-passes said rst arc after it has produced pressure within said chamber and then withdraws from said xed contact drawing out a second arc in the path of quenching medium passing out of said chamber through said outlet, and switch means in series with said compound pin and operatively connected with said compound pin whereby said switch means is automatically opened after said compound pin has operated for breaking a circuit.

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  • Circuit Breakers (AREA)
US26316A 1947-06-24 1948-05-11 Electric circuit controlling device Expired - Lifetime US2570567A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1005243T 1947-06-24
FR1004808T 1947-06-24

Publications (1)

Publication Number Publication Date
US2570567A true US2570567A (en) 1951-10-09

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Application Number Title Priority Date Filing Date
US26316A Expired - Lifetime US2570567A (en) 1947-06-24 1948-05-11 Electric circuit controlling device

Country Status (6)

Country Link
US (1) US2570567A (fr)
BE (1) BE482527A (fr)
CH (1) CH280301A (fr)
FR (3) FR1004809A (fr)
GB (1) GB647177A (fr)
NL (1) NL77942C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675446A (en) * 1951-07-07 1954-04-13 Pacific Electric Mfg Corp Circuit-breaker structure
US2677740A (en) * 1951-01-29 1954-05-04 Allard Christian Joseph-Marie Arc-extinguishing oil-poor circuit-breaker
DE2811510A1 (de) * 1977-03-24 1978-09-28 Mitsubishi Electric Corp Stromkreisunterbrecher

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968281C (de) * 1952-10-23 1958-01-30 Voigt & Haeffner Ag Fluessigkeitsschalter mit einer durch den Schaltstift betaetigten Pumpeinrichtung fuer die Loeschfluessigkeit
DE1082650B (de) * 1955-07-23 1960-06-02 Sachsenwerk Licht & Kraft Ag Fluessigkeitsarmer elektrischer Leistungsschalter mit Stufenwiderstand
DE3675152D1 (de) * 1985-11-08 1990-11-29 Wolle & Seide Veb K Elektrisch leitfaehiger kombinationszwirn sowie daraus hergestelltes textiles gewebe.
CN112614730B (zh) * 2020-12-09 2023-03-31 平高集团有限公司 双动灭弧室传动结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222719A (en) * 1939-07-08 1940-11-26 Gen Electric Air blast circuit breaker
US2387589A (en) * 1937-07-19 1945-10-23 Kesselring Fritz Circuit breaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2387589A (en) * 1937-07-19 1945-10-23 Kesselring Fritz Circuit breaker
US2222719A (en) * 1939-07-08 1940-11-26 Gen Electric Air blast circuit breaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677740A (en) * 1951-01-29 1954-05-04 Allard Christian Joseph-Marie Arc-extinguishing oil-poor circuit-breaker
US2675446A (en) * 1951-07-07 1954-04-13 Pacific Electric Mfg Corp Circuit-breaker structure
DE2811510A1 (de) * 1977-03-24 1978-09-28 Mitsubishi Electric Corp Stromkreisunterbrecher

Also Published As

Publication number Publication date
FR1004809A (fr) 1952-04-03
FR1004808A (fr) 1952-04-03
FR1005243A (fr) 1952-04-08
BE482527A (fr) 1948-06-15
GB647177A (en) 1950-12-06
NL77942C (fr) 1955-05-16
CH280301A (de) 1952-01-15

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