DE854388C - Switching device - Google Patents

Switching device

Info

Publication number
DE854388C
DE854388C DEA1312D DEA0001312D DE854388C DE 854388 C DE854388 C DE 854388C DE A1312 D DEA1312 D DE A1312D DE A0001312 D DEA0001312 D DE A0001312D DE 854388 C DE854388 C DE 854388C
Authority
DE
Germany
Prior art keywords
voltage
switching device
dependent
resistance
impedances
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
DEA1312D
Other languages
German (de)
Inventor
Hans Thommen
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.)
BROWN AG
BBC Brown Boveri France SA
Original Assignee
BROWN AG
BBC Brown Boveri France SA
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 BROWN AG, BBC Brown Boveri France SA filed Critical BROWN AG
Priority to DEA1312D priority Critical patent/DE854388C/en
Application granted granted Critical
Publication of DE854388C publication Critical patent/DE854388C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H01H2033/146—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc using capacitors, e.g. for the voltage division over the different switches

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

Schalteinrichtung Das Hauptpatent betrifft einen Druckgasschalter mit Mehrfachunterbrechung und mit einer dazu in Reihe liegenden Trennschaltstelle für die Spannungsisolation, bei welchemdeneinzelnenLeistungsunterbrechungsstellen Impedanzen parallel geschaltet sind, die so bemessen sind, daB die Spannung auf alle Leistungsunterbrechungsstellen gleichmäßig verteilt wird und derReststrom durch einen Schalter abgeschaltet werden kann, der ohne Druckgas isoliert. Als Impedanzen dienen neben Kondensatoren auch Widerständen in bestimmter Anordnung.Switching device The main patent relates to a gas pressure switch with multiple interruption and with an isolating switch point in series for the voltage isolation, in which the individual power interruption points Impedances are connected in parallel, which are dimensioned so that the voltage on all power interruption points are evenly distributed and the residual current through a switch can be turned off that isolates without compressed gas. As impedances In addition to capacitors, resistors are also used in a certain arrangement.

Gegenstand vorliegender Erfindung ist eine Verbesserung von Schalteinrichtungen dieser Art, welche darin besteht, daB als Impedanzen in an sich bekannter Weise spannungsabhängige Widerstände dienen, d. 1i. solche, die ihren Widerstandswert inlt wachsender Spatmutig verringern. Für die spannungsabhängigen Widerstände kommen alle in der Elektrotechnik bekannten Widerstände dieser Art in Betracht, wie z. B. Silit, Karborund usw., welche ihren Stromwert nicht linear mit der Spannung ändern, sondern mit wachsender Spannung ihren Widerstand verringern. Das ergibt dann den Vorteil, daß mit der Höhe der Spannung der Widerstandswert kleiner wird und so der Ausbildung der Überspannung entgegenwirkt; dies hat wiederum zur Folge, daß der durch den Widerstand begrenzte Reststrom so klein bleibt, daß ein einfacher Trennschalter für seine Abschaltung nach der öffnung des Leistungsschalters genügt. Versuche haben gezeigt, daB es bei Verwendung spannungsabhängiger Widerstände möglich ist, mit viel höheren Ohmwerten eine gleich günstige Verteilung der Spannung auf die verschiedenen Unterbrechungsstellen des Leistungsschalters zu erzielen, als bei Verwendung nicht spannungsabhängiger Widerstände. Dieser höhere Ohmwert ergibt einen entsprechend kleineren Reststrom für die Unterbrechung durch den Serielufttrenner und entsprechend geringere Abmessungen für diesen, also eine Verbilligung der Schalteinrichtung.The present invention is an improvement of switching devices of this kind, which consists in that as impedances in a manner known per se voltage-dependent resistances are used, d. 1i. those that their resistance value inlt growing Spatidity decrease. Come for the voltage dependent resistors all resistors of this type known in electrical engineering can be taken into account, e.g. B. Silite, Carborundum, etc., which do not change their current value linearly with the voltage, but decrease their resistance as the tension increases. That then results in the The advantage is that the higher the voltage, the lower the resistance, and so does the Counteracts the formation of overvoltage; this in turn has the consequence that the The residual current limited by the resistor remains so small that a simple disconnector is sufficient to switch it off after the circuit breaker has been opened. Have attempts has shown that it is possible to use voltage-dependent resistors with much higher ohmic values an equally favorable distribution of the voltage among the various Interruption points of the circuit breaker than with Use of non-voltage dependent resistors. This higher ohmic value makes one correspondingly smaller residual current for the interruption by the series air separator and correspondingly smaller dimensions for this, that is, a cheaper switchgear.

Claims (3)

PATENTANSPROCHE: i. Schalteinrichtung nach Patent .767 058, dadurch gekennzeichnet, daB als Impedanzen spannungsabhängigeWiderständedienen, welche ihren Widerstandswert mit wachsender Spannung verringern. PATENT CLAIM: i. Switching device according to patent .767 058, characterized in that voltage-dependent resistances are used as impedances, which reduce their resistance value with increasing voltage. 2. Schalteinrichtung nach Anspruch i, dadurch gekennzeichnet, daB parallel zu dem spannungsabhängigen Widerstand ein gewöhnlicher Widerstand ,geschaltet ist. 2. Switching device according to claim i, characterized in that parallel to the voltage-dependent Resistance an ordinary resistance that is connected. 3. Schalteinrichtung nach Anspruch i, dadurch gekennzeichnet, daB parallel zu -dem spannungsabhängigen Widerstand ein Kondensator geschaltet ist.3. Switching device according to Claim i, characterized in that parallel to -the voltage-dependent resistor a capacitor is connected.
DEA1312D 1938-05-27 1940-01-30 Switching device Expired DE854388C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA1312D DE854388C (en) 1938-05-27 1940-01-30 Switching device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE210130X 1938-05-27
CH2292252T 1940-01-23
DEA1312D DE854388C (en) 1938-05-27 1940-01-30 Switching device
CH2331441X 1940-06-08
CH2340827X 1941-09-27
CH577502X 1942-12-21

Publications (1)

Publication Number Publication Date
DE854388C true DE854388C (en) 1952-11-04

Family

ID=32097161

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA1312D Expired DE854388C (en) 1938-05-27 1940-01-30 Switching device

Country Status (1)

Country Link
DE (1) DE854388C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052500B (en) * 1956-03-19 1959-03-12 Asea Ab High-voltage compressed air switch with several circuit breakers connected in series

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052500B (en) * 1956-03-19 1959-03-12 Asea Ab High-voltage compressed air switch with several circuit breakers connected in series

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