EP0096834A3 - Protective circuit arrangement, especially for electrical devices - Google Patents

Protective circuit arrangement, especially for electrical devices Download PDF

Info

Publication number
EP0096834A3
EP0096834A3 EP83105600A EP83105600A EP0096834A3 EP 0096834 A3 EP0096834 A3 EP 0096834A3 EP 83105600 A EP83105600 A EP 83105600A EP 83105600 A EP83105600 A EP 83105600A EP 0096834 A3 EP0096834 A3 EP 0096834A3
Authority
EP
European Patent Office
Prior art keywords
circuit
primary
temperature
protective
galvanically
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Withdrawn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
EP83105600A
Other languages
German (de)
French (fr)
Other versions
EP0096834A2 (en
Inventor
Manfred Rupalla
Klaus Stärk
Renate Schulz
Edward Albert Rule
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.)
Wickmann Werke GmbH
Original Assignee
Wickmann Werke GmbH
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
Priority claimed from DE19823221919 external-priority patent/DE3221919C2/en
Priority claimed from DE19823241133 external-priority patent/DE3241133A1/en
Application filed by Wickmann Werke GmbH filed Critical Wickmann Werke GmbH
Publication of EP0096834A2 publication Critical patent/EP0096834A2/en
Publication of EP0096834A3 publication Critical patent/EP0096834A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/046—Fuses formed as printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/46—Circuit arrangements not adapted to a particular application of the protective device
    • H01H85/463—Circuit arrangements not adapted to a particular application of the protective device with printed circuit fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/048—Fuse resistors
    • H01H2085/0483—Fuse resistors with temperature dependent resistor, e.g. thermistor

Abstract

Eine Schutzschaltung weist im Leistungs- oder Primär­ kreis ein Schmelzelement (2) als Kurzschlußschutz und in einem Sekundärkreis einen temperaturabhängigen Wider­ stand (7) auf, der vom Schmelzelement (2) galvanisch ge­ trennt, aber mit diesem thermisch gekoppelt ist. Wenn sich das Schmelzelement (2) unter Strombelastung, insbeson­ dere unter Überstrombelastung, im Primärkreis erwärmt, wird der temperaturabhängige Widerstand (7) aufgrund der Wärmekopplung ebenfalls erwärmt mit entsprechender Än­ derung seiner Widerstandswerte proportional zu der auf das Schmelzelement (2) im Primärkreis einwirkenden Strombelastung. Bei Erreichen bestimmter Momentanwerte des Widerstands (7), die vorbestimmten Arbeitspunkten ent­ sprechen, schaltet der Sekundärkreis den Primärkreis ab oder übt anderweitige Schutzfunktionen aus. In dieser Schutzschaltung sind das Schmelzelement (2) und der hier­ mit thermisch gekoppelte temperaturabhängige Widerstand (7) als gesondertes elektrisches Bauelement galvanisch getrennt gemeinsam an einem wärmedurchlässigen Träger (1) aus Isoliermaterial angeordnet. A protective circuit points in the power or primary circle a melting element (2) as short-circuit protection and in a secondary circuit has a temperature-dependent counter got up (7), the galvanically from the fusible element (2) separates, but is thermally coupled to it. If the melting element (2) under current, in particular those under overcurrent, heated in the primary circuit, the temperature-dependent resistor (7) due to the Coupling of heat also warmed with corresponding changes change in its resistance values proportional to that the melting element (2) acting in the primary circuit Current load. When certain instantaneous values are reached of the resistor (7), the predetermined operating points ent speak, the secondary circuit switches off the primary circuit or has other protective functions. In this Protective circuit are the fuse element (2) and the one here with thermally coupled temperature dependent resistor (7) galvanically as a separate electrical component separated together on a heat-permeable support (1) made of insulating material.

EP83105600A 1982-06-11 1983-06-08 Protective circuit arrangement, especially for electrical devices Withdrawn EP0096834A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3221919 1982-06-11
DE19823221919 DE3221919C2 (en) 1982-06-11 1982-06-11 Monitoring element for power circuits
DE19823241133 DE3241133A1 (en) 1982-11-08 1982-11-08 Protection circuit for electrical systems and apparatuses
DE3241133 1982-11-08

Publications (2)

Publication Number Publication Date
EP0096834A2 EP0096834A2 (en) 1983-12-28
EP0096834A3 true EP0096834A3 (en) 1985-10-30

Family

ID=25802361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105600A Withdrawn EP0096834A3 (en) 1982-06-11 1983-06-08 Protective circuit arrangement, especially for electrical devices

Country Status (1)

Country Link
EP (1) EP0096834A3 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632413A1 (en) * 1986-09-24 1988-03-31 Demetron METHOD FOR THE PRODUCTION OF FLINKING MELTFUSE
GB2205455A (en) * 1987-05-29 1988-12-07 Crystalate Electronics Thermal fuse
US5097247A (en) * 1991-06-03 1992-03-17 North American Philips Corporation Heat actuated fuse apparatus with solder link
JP3067011B2 (en) * 1994-11-30 2000-07-17 ソニーケミカル株式会社 Protection element and method of manufacturing the same
US5712610C1 (en) * 1994-08-19 2002-06-25 Sony Chemicals Corp Protective device
DE19744765A1 (en) * 1997-10-10 1999-04-15 Daimler Chrysler Ag Fuse element circuit for automobile electrics
DE19754415A1 (en) * 1997-12-09 1999-06-10 Wickmann Werke Gmbh Electrical equipment protection circuit e.g. for automobile electric's
FR2994892B1 (en) * 2012-09-06 2014-10-03 Valeo Systemes Thermiques ELECTRIC FLUID HEATING DEVICE FOR MOTOR VEHICLE, HEATING CIRCUIT, AND HEATING AND / OR AIR CONDITIONING APPARATUS THEREOF
DE102014215279A1 (en) * 2014-08-04 2016-02-04 Phoenix Contact Gmbh & Co. Kg Fuse for a device to be protected

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614345A (en) * 1969-11-17 1971-10-19 Zyrotron Ind Inc Thermal sensing device
US3843949A (en) * 1971-10-01 1974-10-22 K Eastwood Electrical relay
DE2611819A1 (en) * 1976-03-19 1977-09-29 Siemens Ag Voltage dependent resistor - with conductor between resistance layers on substrate mounted between contacts with terminals fused through
EP0026571A1 (en) * 1979-08-16 1981-04-08 RAYCHEM CORPORATION (a California corporation) Protection of electrical systems using PTC devices
FR2494900A1 (en) * 1980-11-27 1982-05-28 Wickmann Werke Ag FUSE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614345A (en) * 1969-11-17 1971-10-19 Zyrotron Ind Inc Thermal sensing device
US3843949A (en) * 1971-10-01 1974-10-22 K Eastwood Electrical relay
DE2611819A1 (en) * 1976-03-19 1977-09-29 Siemens Ag Voltage dependent resistor - with conductor between resistance layers on substrate mounted between contacts with terminals fused through
EP0026571A1 (en) * 1979-08-16 1981-04-08 RAYCHEM CORPORATION (a California corporation) Protection of electrical systems using PTC devices
FR2494900A1 (en) * 1980-11-27 1982-05-28 Wickmann Werke Ag FUSE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PHILIPS RESEARCH REPORTS, Band 22, 1967, Seiten 170-177, Eindhoven, NL; K. VAN TEENSEL u.a.: "Thin-film switching elements of VO2" *

Also Published As

Publication number Publication date
EP0096834A2 (en) 1983-12-28

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19851107

17Q First examination report despatched

Effective date: 19870116

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870527

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STAERK, KLAUS

Inventor name: RUPALLA, MANFRED

Inventor name: RULE, EDWARD ALBERT

Inventor name: SCHULZ, RENATE