EP0017813B1 - Auslöser für ein thermisches Schutzrelais - Google Patents

Auslöser für ein thermisches Schutzrelais Download PDF

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Publication number
EP0017813B1
EP0017813B1 EP80101602A EP80101602A EP0017813B1 EP 0017813 B1 EP0017813 B1 EP 0017813B1 EP 80101602 A EP80101602 A EP 80101602A EP 80101602 A EP80101602 A EP 80101602A EP 0017813 B1 EP0017813 B1 EP 0017813B1
Authority
EP
European Patent Office
Prior art keywords
bearing bracket
protective relay
bearing
tripping lever
lever
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
Application number
EP80101602A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0017813A1 (de
Inventor
Albert Warnest
Friedrich Ebnet
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0017813A1 publication Critical patent/EP0017813A1/de
Application granted granted Critical
Publication of EP0017813B1 publication Critical patent/EP0017813B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H71/7445—Poly-phase adjustment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements

Definitions

  • the invention relates to a trigger for a thermal protection relay with a pivotally mounted, U-shaped bearing bracket for an adjustable via an adjusting cam, a contact set acting release lever which is connected to a temperature compensation strip.
  • the mounting and holding of the bearing bracket is simplified if the bearing bracket on the web has an elastic tongue bent out towards the legs, which engages behind an undercut of the bearing pin.
  • a compact unit that can be accommodated in the smallest space is obtained if the release lever and temperature compensation strips are fastened next to one another in the longitudinal direction of the bearing bracket. With relatively little effort without significant frictional losses can be used if the release lever is an angle lever and the direction of action of the thermal sensor on the lever is substantially parallel to the longitudinal direction of the leg of the bearing bracket.
  • the protective relay shown in FIG. 1 consists of the housing 1, in the lower part of which the bimetallic strips 2, which represent the sensors, are fastened and act on differential trigger slides 3.
  • the differential trigger slide 3 are operatively connected to the trigger lever 5 via the differential lever 4 (FIG. 3).
  • the release lever 5 is designed as an angle lever and is pivotably mounted on the pin 6 in the U-shaped bearing bracket 7.
  • the direction of action of the differential lever 4 on the arm 8 of the release lever 5 runs practically parallel to the connection point of the longitudinal axis of the pin 6 and the longitudinal axis of the bearing pin 9 for the U-shaped bearing bracket 7.
  • the bearing points are located in the legs 10 of the bearing bracket, whereas on Web 11 of the bracket 7, the end 12 of the U-shaped bent temperature compensation strip 13 is welded.
  • the end 14 of the temperature compensation strip is supported on the cams 15 of the adjusting eccentric 16 at least when the bistable 2 is deflected.
  • the bearing bracket 7 is in the most extended position possible and the trigger lever comes into engagement with the arm 17 with the dead center spring 18 for the contact arrangement 19.
  • a sheet metal bracket 21 is adjustably arranged on the arm 17 via an adjusting screw 20.
  • Another adjusting screw 22 is used to adjust the position for the dead center spring 18.
  • temperature compensation strips 13 and release lever 5 lie next to one another in the web direction of the bearing bracket.
  • the bearing pin 9 for the bearing bracket 7 can be seen with an undercut 23, behind which a punched-out tongue 24 snaps onto the web 11 of the bearing bracket 10 after the bearing bracket has been fitted, so that no further holding means for the bearing bracket 7 are required.
  • the trigger mechanism can be inserted as a prefabricated unit into the housing 1, which furthermore particularly affects the manufacturing process Simplified in terms of automation.
  • the drawing shows that in the subject of the invention without the use of additional springs, the end 14 of the temperature compensation strip 13 is in contact with the adjusting cam 15, provided that the differential slides 3 move in the direction of tripping.
  • the fact that the temperature compensation strip 13 is U-shaped and encompasses both bearing points 6 and 9 results in a compact design, so that the protective relay can be accommodated in a relatively small housing.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
EP80101602A 1979-04-11 1980-03-26 Auslöser für ein thermisches Schutzrelais Expired EP0017813B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2914776A DE2914776C2 (de) 1979-04-11 1979-04-11 Auslöser für ein thermisches Schutzrelais
DE2914776 1979-04-11

Publications (2)

Publication Number Publication Date
EP0017813A1 EP0017813A1 (de) 1980-10-29
EP0017813B1 true EP0017813B1 (de) 1983-01-26

Family

ID=6068130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101602A Expired EP0017813B1 (de) 1979-04-11 1980-03-26 Auslöser für ein thermisches Schutzrelais

Country Status (8)

Country Link
US (1) US4321573A (enrdf_load_stackoverflow)
EP (1) EP0017813B1 (enrdf_load_stackoverflow)
JP (1) JPS5929939B2 (enrdf_load_stackoverflow)
AR (1) AR218199A1 (enrdf_load_stackoverflow)
BR (1) BR8002178A (enrdf_load_stackoverflow)
DE (1) DE2914776C2 (enrdf_load_stackoverflow)
ES (1) ES8101316A1 (enrdf_load_stackoverflow)
IN (1) IN153469B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904539C1 (de) * 1999-02-04 2000-03-09 Siemens Ag Totpunktschalter

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56100853U (enrdf_load_stackoverflow) * 1979-12-29 1981-08-08
EP0097344B1 (de) * 1982-06-22 1991-04-17 Licentia Patent-Verwaltungs-GmbH Thermisches Überstromrelais
JPS61121133U (enrdf_load_stackoverflow) * 1985-01-14 1986-07-30
US4806897A (en) * 1987-12-17 1989-02-21 Eaton Corporation Overload relay having adaptive differential mechanism
JPH03106951U (enrdf_load_stackoverflow) * 1990-02-19 1991-11-05
DE29615688U1 (de) * 1996-09-09 1996-10-31 Siemens AG, 80333 München Einsteckbarer Schnappmechanismus
KR100550732B1 (ko) * 1999-04-02 2006-02-08 후지 덴키 가부시끼가이샤 회로 차단기의 열동형 과부하 트리핑 장치
KR100400779B1 (ko) * 2001-11-12 2003-10-08 엘지산전 주식회사 열동형 과부하 계전기의 오동작 방지구조
JP5152102B2 (ja) * 2009-03-27 2013-02-27 富士電機機器制御株式会社 熱動形過負荷継電器
JP4798243B2 (ja) * 2009-03-27 2011-10-19 富士電機機器制御株式会社 熱動形過負荷継電器
JP4978681B2 (ja) * 2009-10-23 2012-07-18 富士電機機器制御株式会社 熱動形過負荷継電器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB543192A (en) * 1940-08-12 1942-02-13 Crabtree & Co Ltd J A Improvements in and connected with automatically released electric switches
FR1354107A (fr) * 1961-03-07 1964-03-06 Perfectionnements aux relais différentiels thermiques de protection électrique
FR1370075A (fr) * 1963-07-08 1964-08-21 Comp Generale Electricite Relais différentiel
GB1399401A (en) * 1972-01-11 1975-07-02 Cutler Hammer Inc Electric switches
US4047140A (en) * 1975-12-23 1977-09-06 Westinghouse Electric Corporation Thermal overload relay
US4147999A (en) * 1977-12-19 1979-04-03 Westinghouse Electric Corp. Circuit breaker
JPS5942927B2 (ja) * 1977-12-29 1984-10-18 富士電機株式会社 熱動形過負荷継電器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904539C1 (de) * 1999-02-04 2000-03-09 Siemens Ag Totpunktschalter
DE19904539C2 (de) * 1999-02-04 2002-02-07 Siemens Ag Totpunktschalter

Also Published As

Publication number Publication date
EP0017813A1 (de) 1980-10-29
US4321573A (en) 1982-03-23
AR218199A1 (es) 1980-05-15
DE2914776C2 (de) 1981-07-02
IN153469B (enrdf_load_stackoverflow) 1984-07-21
ES490434A0 (es) 1980-12-01
JPS55146833A (en) 1980-11-15
BR8002178A (pt) 1980-11-25
DE2914776B1 (de) 1980-07-17
ES8101316A1 (es) 1980-12-01
JPS5929939B2 (ja) 1984-07-24

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