FR2405574A1 - Faulty current protective switch with summation current transformer - has constant current control circuit of Zener diode and transistor, and resistor between diode and transistor resistor - Google Patents

Faulty current protective switch with summation current transformer - has constant current control circuit of Zener diode and transistor, and resistor between diode and transistor resistor

Info

Publication number
FR2405574A1
FR2405574A1 FR7814567A FR7814567A FR2405574A1 FR 2405574 A1 FR2405574 A1 FR 2405574A1 FR 7814567 A FR7814567 A FR 7814567A FR 7814567 A FR7814567 A FR 7814567A FR 2405574 A1 FR2405574 A1 FR 2405574A1
Authority
FR
France
Prior art keywords
transistor
resistor
zener diode
diode
control circuit
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.)
Withdrawn
Application number
FR7814567A
Other languages
French (fr)
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk 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 Felten and Guilleaume Carlswerk AG filed Critical Felten and Guilleaume Carlswerk AG
Publication of FR2405574A1 publication Critical patent/FR2405574A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02H3/34—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 of a three-phase system
    • H02H3/347—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 of a three-phase system using summation current transformers
    • 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
    • H02H3/02—Details
    • H02H3/027—Details with automatic disconnection after a predetermined time

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The switch has a trip, a latching mechanism with contacts, rectifier bridge circuit connected to the transformer secondary via an attenuation element, and a delay capacitor in parallel with the trip. The rectifier circuit has a charge capacitor connected to its output terminals. A constant current control circuit consists of a Zener diode (5) and a transistor (6). The transistor base-emitter path contains a variable resistor (11) between the Zener diode and the emitter. The delay capacitor (7) is connected to the transistor collector and its other end is coupled both to the charge capacitor (10), thus forming a parallel connection to the charge capacitor. The Zener diode and the capacitor (10) are in parallel. A further resistor (12) at the transistor base forms a common connecting point.
FR7814567A 1977-10-08 1978-05-17 Faulty current protective switch with summation current transformer - has constant current control circuit of Zener diode and transistor, and resistor between diode and transistor resistor Withdrawn FR2405574A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2745464A DE2745464B1 (en) 1977-10-08 1977-10-08 Residual current circuit breaker

Publications (1)

Publication Number Publication Date
FR2405574A1 true FR2405574A1 (en) 1979-05-04

Family

ID=6021067

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814567A Withdrawn FR2405574A1 (en) 1977-10-08 1978-05-17 Faulty current protective switch with summation current transformer - has constant current control circuit of Zener diode and transistor, and resistor between diode and transistor resistor

Country Status (5)

Country Link
AT (1) AT357219B (en)
DE (1) DE2745464B1 (en)
ES (1) ES470020A1 (en)
FR (1) FR2405574A1 (en)
IT (1) IT1095016B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATA426180A (en) * 1980-08-21 1982-08-15 Biegelmeier Gottfried Fault current protection switch
FR2502393B1 (en) * 1981-03-19 1986-08-08 Etude Et Realisa De Disjoncteu FAULT CURRENT DETECTION DEVICE
FR2622368B1 (en) * 1987-10-23 1993-04-30 Serd Soc Et Realisa Disjonct SELECTIVE DIFFERENTIAL SWITCH WITH FAULT CURRENT
FR2653610B1 (en) * 1989-10-25 1991-12-27 Etude Realisa Disjoncteurs SELECTIVE DIFFERENTIAL SWITCH WITH FAULT CURRENT.
DE19833829A1 (en) * 1998-07-28 2000-02-03 Abb Patent Gmbh Tripping device for a residual current circuit breaker and circuit arrangement for controlling the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2044475A5 (en) * 1969-05-22 1971-02-19 Landis & Gyr Ag

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2044475A5 (en) * 1969-05-22 1971-02-19 Landis & Gyr Ag

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/68 *

Also Published As

Publication number Publication date
IT1095016B (en) 1985-08-10
IT7822773A0 (en) 1978-04-27
AT357219B (en) 1980-06-25
DE2745464B1 (en) 1979-01-25
ATA224778A (en) 1979-11-15
ES470020A1 (en) 1979-08-16

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse