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GB2028034B - Time delay relay systems - Google Patents

Time delay relay systems

Info

Publication number
GB2028034B
GB2028034B GB7925912A GB7925912A GB2028034B GB 2028034 B GB2028034 B GB 2028034B GB 7925912 A GB7925912 A GB 7925912A GB 7925912 A GB7925912 A GB 7925912A GB 2028034 B GB2028034 B GB 2028034B
Authority
GB
United Kingdom
Prior art keywords
time delay
delay relay
relay systems
systems
time
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
GB7925912A
Other versions
GB2028034A (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.)
General Electric Company PLC
Original Assignee
General Electric Company PLC
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 General Electric Company PLC filed Critical General Electric Company PLC
Priority to GB7925912A priority Critical patent/GB2028034B/en
Publication of GB2028034A publication Critical patent/GB2028034A/en
Application granted granted Critical
Publication of GB2028034B publication Critical patent/GB2028034B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
    • H02H3/0935—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means the timing being determined by numerical means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
GB7925912A 1978-08-09 1979-07-25 Time delay relay systems Expired GB2028034B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7925912A GB2028034B (en) 1978-08-09 1979-07-25 Time delay relay systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7832685 1978-08-09
GB7925912A GB2028034B (en) 1978-08-09 1979-07-25 Time delay relay systems

Publications (2)

Publication Number Publication Date
GB2028034A GB2028034A (en) 1980-02-27
GB2028034B true GB2028034B (en) 1982-06-23

Family

ID=26268485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7925912A Expired GB2028034B (en) 1978-08-09 1979-07-25 Time delay relay systems

Country Status (1)

Country Link
GB (1) GB2028034B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58172928A (en) * 1982-04-01 1983-10-11 株式会社大隈鐵工所 Device for monitoring motor
JPH04364316A (en) * 1991-06-11 1992-12-16 Toyota Autom Loom Works Ltd Overcurrent detecting system
EP0669691B1 (en) * 1994-02-23 1997-05-14 SAIA-Burgess Electronics AG Circuit for devices for measuring and monitoring electrical currents

Also Published As

Publication number Publication date
GB2028034A (en) 1980-02-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee