GB390922A - Improvements in or relating to electric protective relays - Google Patents

Improvements in or relating to electric protective relays

Info

Publication number
GB390922A
GB390922A GB4221/32A GB422132A GB390922A GB 390922 A GB390922 A GB 390922A GB 4221/32 A GB4221/32 A GB 4221/32A GB 422132 A GB422132 A GB 422132A GB 390922 A GB390922 A GB 390922A
Authority
GB
United Kingdom
Prior art keywords
contact
time
tripping
current
controlled
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
GB4221/32A
Other languages
English (en)
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 Schuckertwerke AG
Siemens Corp
Original Assignee
Siemens Schuckertwerke AG
Siemens Corp
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 Schuckertwerke AG, Siemens Corp filed Critical Siemens Schuckertwerke AG
Publication of GB390922A publication Critical patent/GB390922A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/30—Staggered disconnection
    • 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
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay

Landscapes

  • Emergency Protection Circuit Devices (AREA)
GB4221/32A 1931-02-12 1932-02-12 Improvements in or relating to electric protective relays Expired GB390922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE390922X 1931-02-12

Publications (1)

Publication Number Publication Date
GB390922A true GB390922A (en) 1933-04-20

Family

ID=6376841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4221/32A Expired GB390922A (en) 1931-02-12 1932-02-12 Improvements in or relating to electric protective relays

Country Status (2)

Country Link
GB (1) GB390922A (enrdf_load_stackoverflow)
NL (2) NL34033C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752539A (en) * 1952-03-05 1956-06-26 Westinghouse Electric Corp Induction-type alternating-current relays

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752539A (en) * 1952-03-05 1956-06-26 Westinghouse Electric Corp Induction-type alternating-current relays

Also Published As

Publication number Publication date
NL34033C (enrdf_load_stackoverflow)
NL34035C (enrdf_load_stackoverflow)

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