GB1322836A - Thermal relays - Google Patents

Thermal relays

Info

Publication number
GB1322836A
GB1322836A GB3661171A GB1322836DA GB1322836A GB 1322836 A GB1322836 A GB 1322836A GB 3661171 A GB3661171 A GB 3661171A GB 1322836D A GB1322836D A GB 1322836DA GB 1322836 A GB1322836 A GB 1322836A
Authority
GB
United Kingdom
Prior art keywords
bimetals
shaft
sleeve
latch
acting
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
GB3661171A
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.)
Kheifits E B
Original Assignee
Kheifits E B
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 Kheifits E B filed Critical Kheifits E B
Publication of GB1322836A publication Critical patent/GB1322836A/en
Expired legal-status Critical Current

Links

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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature
    • 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

Landscapes

  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

1322836 Thermal relays E B KHEIFITS B Z VAINSHTEIN G K POCHKHUA Z G KHANIASHVILI and B D TORTLADZE 4 Aug 1971 36611/71 Heading H1N A thermal relay for protection against overcurrent and phase failure in a polyphase system comprises a plurality of bimetals 3 sensing the respective phase currents and acting upon a shaft 1 capable of movement both axially and rotatably and coupled to a contact arrangement through a connection 5, 6 which transmits only the rotary motion. The shaft 1 has a square section which slides freely in a square bore in a sleeve 6 whch is rotatable in a bearing 5. An arm 7 attached to sleeve 6 carries a latch 13 normaly holding the contacts closed. Offset from the axis of shaft 1 is a notched portion 2 co-operating through cam surfaces 12 with the bimetals 3. On heating due to normal phase currents the bimetals move the portion 2 towards a stop formed by a compensating bimetal 11, the square section sliding through the sleeve 6. Subsequent movement of the bimetals either due to overload current or phase failure causes rotation of shaft 1 due to the bimetals acting on the sloping surfaces 12, thus releasing the latch 13 to open the contacts 9, 10. A push button 14 is provided for resetting.
GB3661171A 1971-07-19 1971-08-04 Thermal relays Expired GB1322836A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT626371A AT312086B (en) 1971-07-19 1971-07-19 Bimetal relay
GB3661171 1971-08-04
DE2139808A DE2139808A1 (en) 1971-07-19 1971-08-09 THERMAL RELAY
FR717130862A FR2150243B1 (en) 1971-07-19 1971-08-25

Publications (1)

Publication Number Publication Date
GB1322836A true GB1322836A (en) 1973-07-11

Family

ID=27422168

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3661171A Expired GB1322836A (en) 1971-07-19 1971-08-04 Thermal relays

Country Status (4)

Country Link
AT (1) AT312086B (en)
DE (1) DE2139808A1 (en)
FR (1) FR2150243B1 (en)
GB (1) GB1322836A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143022B1 (en) * 1983-10-21 1988-06-01 Merlin Gerin Thermal and magnetic circuit breaker tripping mechanism
CN103489719B (en) * 2013-09-11 2016-09-21 国家电网公司 A kind of thermorelay

Also Published As

Publication number Publication date
FR2150243A1 (en) 1973-04-06
AT312086B (en) 1973-12-10
DE2139808A1 (en) 1973-02-22
FR2150243B1 (en) 1974-06-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee