EP0113025B1 - Disjoncteur de protection contre les courants de défaut - Google Patents

Disjoncteur de protection contre les courants de défaut Download PDF

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Publication number
EP0113025B1
EP0113025B1 EP83111737A EP83111737A EP0113025B1 EP 0113025 B1 EP0113025 B1 EP 0113025B1 EP 83111737 A EP83111737 A EP 83111737A EP 83111737 A EP83111737 A EP 83111737A EP 0113025 B1 EP0113025 B1 EP 0113025B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
earth leakage
current circuit
frequency
residual
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
EP83111737A
Other languages
German (de)
English (en)
Other versions
EP0113025A1 (fr
Inventor
Karl-Heinz Stich
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 AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT83111737T priority Critical patent/ATE27748T1/de
Publication of EP0113025A1 publication Critical patent/EP0113025A1/fr
Application granted granted Critical
Publication of EP0113025B1 publication Critical patent/EP0113025B1/fr
Expired legal-status Critical Current

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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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part

Definitions

  • the invention relates to the use of a residual current circuit breaker.
  • Residual current circuit breakers which are equipped with a tripping device common today, work with a holding magnet and are set to an operating frequency of 50 Hz. If such residual current circuit breakers are to protect consumers in networks with a different frequency, the frequency dependency of the holding magnet system interferes. Standard holding magnets are most sensitive at 50 Hz and since their tripping range increases to lower tripping currents at lower frequencies and especially at higher frequencies, special precautions are necessary to ensure tripping at required values.
  • Residual current circuit breakers that work with a tripping device designed as a blocking magnet were used in earlier years (Siemens-Zeitschrift, 1960, pp. 229 to 231). Such residual current circuit breakers have only been used in the usual frequency range of 50 Hz.
  • the invention has for its object to provide a residual current circuit breaker which is frequency-independent in the frequency range of the technically used frequencies, which in other words can trigger safely at these frequencies without changes in adaptation and protect consumers.
  • a blocking magnet device is arranged, as a frequency-independent residual current circuit breaker in a frequency range of about 16 2/3 Hz to 400 Hz.
  • Such a residual current circuit breaker triggers reliably with alternating residual currents up to frequencies of about 400 Hz.
  • the residual current circuit breaker can also detect residual currents with DC components.
  • the summation current transformer can be manufactured in a manner known per se (DE-B-20 44 302) from a core material with an F characteristic. Ultraperm 80 m from Vacuumschmelze, for example, is suitable for this.
  • a triggering device 4 with a blocking magnet is arranged in the secondary circuit of the summation current transformer. It is in operative connection with a switch lock 5, which can open the switch contacts 6.
  • a capacitor 7 is connected in a row arrangement in the secondary circuit of the summation current transformer 3. It is tuned to the frequency of the voltage at least approximately to resonance, which induces a fault current containing direct current components flowing in the primary circuit on the secondary side of the summation current transformer 3.
  • the capacitor 7 according to FIG. 2 is switched on in a parallel arrangement in the secondary circuit.
  • Such residual current circuit breakers respond not only to AC residual currents but also to those residual currents which contain DC components in which conventional residual current circuit breakers cannot respond.
  • the residual current circuit breakers according to FIGS. 1 to 3 also have the advantage that they trip reliably as long as residual currents pose a risk to the consumer, since they are network-independent for their operation.
  • Other known electronic residual current circuit breakers require an intact network in order to be able to work.
  • Residual current circuit breakers of this type do not require a test circuit that is specially matched to the operating frequency when using approximately 16 2/3 Hz to 400 Hz.
  • Residual current circuit breakers of this type with a blocking magnet and, moreover, the training that is customary today for use at 50 Hz are therefore suitable for an application range from approximately 16 2/3 Hz to beyond that for the frequency of up to 400 Hz that occurs in common technical networks.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Fish Paste Products (AREA)
  • Breakers (AREA)

Claims (1)

  1. Utilisation d'un disjoncteur de protection à courant de défaut dont le circuit secondaire d'un transformateur de sommation (3) à nombre de spires primaires suffisant à 50 Hz comporte un verrou électrique (4), en tant que disjoncteur de protection à courant de défaut indépendant de la fréquence, dans une plage de fréquences d'environ 16 2/3 Hz à 400 Hz.
EP83111737A 1982-12-02 1983-11-23 Disjoncteur de protection contre les courants de défaut Expired EP0113025B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83111737T ATE27748T1 (de) 1982-12-02 1983-11-23 Fehlerstromschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823244637 DE3244637A1 (de) 1982-12-02 1982-12-02 Fehlerstromschutzschalter
DE3244637 1982-12-02

Publications (2)

Publication Number Publication Date
EP0113025A1 EP0113025A1 (fr) 1984-07-11
EP0113025B1 true EP0113025B1 (fr) 1987-06-10

Family

ID=6179645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111737A Expired EP0113025B1 (fr) 1982-12-02 1983-11-23 Disjoncteur de protection contre les courants de défaut

Country Status (3)

Country Link
EP (1) EP0113025B1 (fr)
AT (1) ATE27748T1 (fr)
DE (2) DE3244637A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19634438A1 (de) * 1996-08-26 1998-03-05 Siemens Ag Fehlerstromschutzeinrichtung oder Differenzstromschutzeinrichtung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS, Band 51, Nr. 10, Mai 1978, New York (US), A. LLOYD: "Low-cost actuator responds to pulses lasting only 100muS", Seite 5E *
SIEMENS-ZEITSCHRIFT, Heft 4, April 1960, Berlin (DE), R. SCHERBAUM et al.: "Fehlerstrom-Schutzschalter mit Kurzschlussschaltvermögen", Seiten 229-231 *

Also Published As

Publication number Publication date
ATE27748T1 (de) 1987-06-15
EP0113025A1 (fr) 1984-07-11
DE3372037D1 (en) 1987-07-16
DE3244637A1 (de) 1984-06-07

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