DE334794C - Relay for automatic overcurrent switch - Google Patents

Relay for automatic overcurrent switch

Info

Publication number
DE334794C
DE334794C DENDAT334794D DE334794DD DE334794C DE 334794 C DE334794 C DE 334794C DE NDAT334794 D DENDAT334794 D DE NDAT334794D DE 334794D D DE334794D D DE 334794DD DE 334794 C DE334794 C DE 334794C
Authority
DE
Germany
Prior art keywords
relay
overcurrent switch
automatic overcurrent
linkage
current
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
DENDAT334794D
Other languages
German (de)
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.)
WILHELM SCHRADER DIPL ING
Original Assignee
WILHELM SCHRADER DIPL ING
Publication date
Application granted granted Critical
Publication of DE334794C publication Critical patent/DE334794C/en
Expired legal-status Critical Current

Links

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
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay

Landscapes

  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Transmission Device (AREA)

Description

In dem Patent 334793 tritt das Überstromrelais nur dann in Wirksamkeit, wenn bei zunehmendem Strome die Spannung ^erheblich abnimmt. Dieselbe Wirkung kann mit der vorliegenden weiteren Ausbildung jener Erfindung erzielt werden.In the patent 334793 the overcurrent relay only comes into effect when increasing Currents the voltage ^ decreases considerably. The same effect can be achieved with the present further embodiment of that invention can be achieved.

Die vom Stromsystem (in der Zeichnung nicht dargestellt) ausgeübte Kraft wird, wie im genannten Patent erwähnt wurde, jeweilig durch eine Feder fx aufgehoben. Die Bewegungen des Gestänges α werden durch eine Dämpfung verlangsamt. Die Spannungsspule Sp bewirkt hier aber nicht durch Bremsung oder Drosselung die Auslösung, sondern in anderer Weise, wie sie ähnlich für Relaisarten bekannt ist, die nicht mit Stromsystemen arbeiten, die sich der Stromstärke entsprechend verschieden einstellen. Bei hoher Betriebsspannung wird nämlich das Getriebe b durch die Spannungsspule Sp außer Verbindung mit der Triebstange des Gestänges a gehalten. Bei sinkender Betriebsspannung zieht die Feder f 2 das Getriebe b an das Gestänge a heran, und die sich infolge des Überstromes abwärts bewegende Stange α drückt den Hebel c gegen den Auslösekontakt d. The force exerted by the current system (not shown in the drawing) is, as mentioned in the cited patent, canceled in each case by a spring f x. The movements of the linkage α are slowed down by damping. The voltage coil Sp does not cause the triggering by braking or throttling, but in a different way, as is similarly known for types of relays that do not work with current systems that adjust differently according to the current strength. When the operating voltage is high, the transmission b is kept out of connection with the drive rod of the linkage a by the voltage coil Sp . When the operating voltage drops, the spring f 2 pulls the gear b to the linkage a , and the rod α , which moves downwards as a result of the overcurrent, presses the lever c against the release contact d.

Solange also die Betriebsspannung hoch ist, können die Stromschwankungen beliebige Höhe haben, ohne daß eine Auslösung bewirkt wird. Die Wirkung tritt erst mit abnehmender Betriebsspannung ein.So as long as the operating voltage is high, the current fluctuations can be of any magnitude without triggering. The effect only occurs with decreasing operating voltage a.

Eine wichtige Bedingung für das richtige Arbeiten des Relais ist aber die gute Wirkung der Dämpfung, weil unter der Kraft des Stromsystems beim Eintritt des plötzlichen Kurzschlusses die Feder fx nicht früher in die Grenzlage gebracht werden darf, welche dem betreffenden Kurzschluß entspricht, als das Triebwerk b durch den Spannungsrückgang eingeschaltet ist. Der Spannungsrückgang aber tritt erst ein, wenn der plötzliche Kurzschluß in den stationären Kurzschluß übergegangen ist. Die Dämpfung muß also die Bewegung des Gestänges α so stark verzögern, daß der stationäre Kurzschluß vorher eintreten kann.An important condition for the correct operation of the relay, however, is the good effectiveness of the damping, because under the force of the current system when the sudden short circuit occurs, the spring f x must not be brought into the limit position earlier than the engine that corresponds to the short circuit in question b is switched on by the voltage drop. The voltage drop, however, only occurs when the sudden short circuit has changed into the stationary short circuit. The damping must therefore delay the movement of the linkage α so much that the stationary short circuit can occur beforehand.

Claims (1)

-Anspruch:-Claim: Relais für selbsttätige Überstromschalter nach Patent 334793, dadurch gekennzeichnet, daß die Kraftwirkung des Stromsystems eine durch eine Dämpfung verzögerte Bewegung seines Gestänges (a) gegen eine Gegenkraft (^1) herbeiführt und die Auslösevorrichtung (b, c, ä) durch den vom Überstrom hervorgerufenen Spannungsabfall (mittels Sp, f„) mit dem vom Strom bewegten Gestänge (a) gekuppelt wird — anstatt durch Bremsung dieses Gestänges in Gang gesetzt zu werden. 'Relay for automatic overcurrent switches according to patent 334793, characterized in that the force effect of the current system causes a movement of its linkage (a) against a counterforce (^ 1 ), which is delayed by damping, and the release device (b, c, ä) by the one caused by the overcurrent Voltage drop (by means of Sp, f ") is coupled to the rod (a) moved by the current - instead of being set in motion by braking this rod. ' Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT334794D Relay for automatic overcurrent switch Expired DE334794C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE334794T

Publications (1)

Publication Number Publication Date
DE334794C true DE334794C (en) 1921-03-22

Family

ID=6218609

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT334794D Expired DE334794C (en) Relay for automatic overcurrent switch

Country Status (1)

Country Link
DE (1) DE334794C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119393B (en) * 1959-01-28 1961-12-14 Merlin Gerin Circuit breaker with electromagnetic release and delayed tripping process
EP0350826A2 (en) * 1988-07-15 1990-01-17 Asea Brown Boveri Aktiengesellschaft Delaying device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119393B (en) * 1959-01-28 1961-12-14 Merlin Gerin Circuit breaker with electromagnetic release and delayed tripping process
EP0350826A2 (en) * 1988-07-15 1990-01-17 Asea Brown Boveri Aktiengesellschaft Delaying device
EP0350826A3 (en) * 1988-07-15 1991-09-18 Asea Brown Boveri Aktiengesellschaft Delaying device

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