ZA713119B - Threshold temporising device - Google Patents

Threshold temporising device

Info

Publication number
ZA713119B
ZA713119B ZA713119A ZA713119A ZA713119B ZA 713119 B ZA713119 B ZA 713119B ZA 713119 A ZA713119 A ZA 713119A ZA 713119 A ZA713119 A ZA 713119A ZA 713119 B ZA713119 B ZA 713119B
Authority
ZA
South Africa
Prior art keywords
temporising
threshold
threshold temporising
temporising device
Prior art date
Application number
ZA713119A
Inventor
J Morin
Original Assignee
Saparel
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 Saparel filed Critical Saparel
Publication of ZA713119B publication Critical patent/ZA713119B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • 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
    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Direct Current Feeding And Distribution (AREA)
ZA713119A 1970-05-13 1971-05-13 Threshold temporising device ZA713119B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7017431A FR2087280A5 (en) 1970-05-13 1970-05-13

Publications (1)

Publication Number Publication Date
ZA713119B true ZA713119B (en) 1972-01-26

Family

ID=9055461

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA713119A ZA713119B (en) 1970-05-13 1971-05-13 Threshold temporising device

Country Status (7)

Country Link
AR (1) AR193033A1 (en)
BE (1) BE766908A (en)
DE (1) DE2123849A1 (en)
ES (1) ES391121A1 (en)
FR (1) FR2087280A5 (en)
NL (1) NL7106498A (en)
ZA (1) ZA713119B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191319B1 (en) * 1972-06-29 1976-03-12 Radiotechnique Compelec
FR2442525A1 (en) * 1978-11-21 1980-06-20 App Electr Differential transformer for detecting earth currents - controls biassed relay with parallel diode for short-circuiting HF parasitic signals
FR2481851A1 (en) * 1980-04-30 1981-11-06 Merlin Gerin DEVICE FOR DIFFERENTIAL PROTECTION SENSITIVE TO A UNIDIRECTIONAL CURRENT
FR2530864B1 (en) * 1982-07-26 1986-07-25 Serd Soc Et Realisa Disjonct METHOD FOR DELAYING THE OPERATION OF AN AUTOMATIC EARTH SWITCH WITH DIFFERENTIAL DEVICE AND AUTOMATIC EARTH SWITCH WITH DIFFERENTIAL DEVICE COMPRISING THE APPLICATION OF THE METHOD
FR2646570B2 (en) * 1987-10-23 1991-08-09 Serd Sa DIFFERENTIAL FAULT CURRENT SWITCH, WITH ENERGY ACCUMULATION
NL1007165C2 (en) * 1997-09-30 1999-03-31 Holec Holland Nv Earth fault detection circuit with minimum delay for large fault currents.

Also Published As

Publication number Publication date
BE766908A (en) 1971-11-10
ES391121A1 (en) 1974-08-01
DE2123849A1 (en) 1971-11-25
FR2087280A5 (en) 1971-12-31
AR193033A1 (en) 1973-03-30
NL7106498A (en) 1971-11-16

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