DE423719C - Current measurement using a single ammeter for switching devices - Google Patents

Current measurement using a single ammeter for switching devices

Info

Publication number
DE423719C
DE423719C DEV19902D DEV0019902D DE423719C DE 423719 C DE423719 C DE 423719C DE V19902 D DEV19902 D DE V19902D DE V0019902 D DEV0019902 D DE V0019902D DE 423719 C DE423719 C DE 423719C
Authority
DE
Germany
Prior art keywords
ammeter
coils
switching devices
current measurement
yoke
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
DEV19902D
Other languages
German (de)
Inventor
Peter Claas V D Sterr
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.)
Voigt and Haeffner AG
Original Assignee
Voigt and Haeffner 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 Voigt and Haeffner AG filed Critical Voigt and Haeffner AG
Priority to DEV19902D priority Critical patent/DE423719C/en
Application granted granted Critical
Publication of DE423719C publication Critical patent/DE423719C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
    • G01R19/20—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers using transductors, i.e. a magnetic core transducer the saturation of which is cyclically reversed by an AC source on the secondary side

Description

Strommessung mittels eines einzigen Strommessers für Schalteinrichtungen. Verwendet man Transformatoren o. dgl., bei denen zwecks Erhaltung anderer Spannungs-oder Strombereiche eine Umschaltung der einzelnen Spulen mittels Umschalter in den verschiedensten Schaltungen vorgenommen wird, so kann man nach der Erfindung eine Einrichtung treffen, bei der mittels eines einzigen Strommessers unter Verwendung eines einzigen Stromwandlers die Messung für alle Meßbereiche vorgenommen werden kann. Dies wird dadurch bewirkt, daß alle Rückleitungen durch das Joch des einzigen Stromwandlers hindurchgeführt werden. Hierdurch wird erreicht, daß das Joch stets die gleiche Amperewindungszahl besitzt, unabhängig davon, wie die einzelnen Spulen geschaltet sind. Der an diesem Joch angelegte Strommesser braucht nur einen ganz bestimmten Meßbereich zu haben. Je nachdem die Sekundärspulen in Serie, parallel oder in einer kombinierten Schaltung angeordnet sind, wird die durch den Strommesser angezeigte Stromstärke mit einer festgelegten Verhältniszahl multipliziert, um die wahre Stromstärke zu erhalten. Diese Anordnung hat den Vorteil, daß z. B. bei Eicheinrichtungen für den Transport nur ein Strommesser und ein Meßwandler mitzuführen sind, die evtl. in die Eicheinrichtung eingebaut werden können.Current measurement using a single ammeter for switching devices. If you use transformers o. The like. In which to maintain other voltage or Current ranges a switchover of the individual coils by means of a switch in the most diverse Circuits is made, one can make a device according to the invention, by means of a single ammeter using a single current transformer the measurement can be carried out for all measuring ranges. This is done by that all return lines passed through the yoke of the single current transformer will. This ensures that the yoke always has the same number of ampere-turns owns, regardless of how the individual coils are switched. The one attached to this yoke Ammeter only needs to have a very specific measuring range. Depending on the Secondary coils arranged in series, in parallel or in a combined circuit the amperage displayed by the ammeter is set at a specified value Ratio multiplied to get true amperage. This arrangement has the advantage that, for. B. with calibration facilities for the transport only one ammeter and a transducer must be carried, which may be built into the calibration device can be.

Die Abbildung zeigt beispielsweise das Schaltungsschema einer solchen Eicheinrichtung für zwei Sekundärspulen. a ist die Primärwicklung des Eichtransformators, b1, b2 die einzelnen Spulen der Sekundärwicklung. c ist ein Stromwandlerjoch, durch das alle Hin- oder Rückleitungen der Sekundärspulen hindurchgeführt sind. Durch den Umschalter d können die Spulen parallel oder hintereinander geschaltet werden. e ist ein zu prüfendes Relais, f der Strommesser. Je nachdem die Sekundärspulen in Reihe oder parallel geschaltet sind, ist die durch den Strommesser angezeigte Stromstärke mit einer Verhältniszahl zu multiplizieren, um die wahre Stromstärke zu erhalten.The figure shows, for example, the circuit diagram of such a system Calibration device for two secondary coils. a is the primary winding of the calibration transformer, b1, b2 the individual coils of the secondary winding. c is a current transformer yoke, through that all the outgoing and return lines of the secondary coils are passed through. By the changeover switch d enables the coils to be switched in parallel or in series. e is a relay to be tested, f the ammeter. Depending on the secondary coils connected in series or in parallel is the one indicated by the ammeter Amperage to be multiplied by a ratio to get the true amperage to obtain.

Claims (1)

PATENTANSPRUCH: Strommessung mittels eines einzigen Strommessers für Schalteinrichtungen, bei denen Spulen durch vorhandene Einrichtungen in beliebiger Serienparallelschaltung geschaltet werden können, dadurch gekennzeichnet, daß alle Hin- oder Rückleitungen dieser Spulen ein Stromwandlerjoch passieren, so daß trotz Änderung der Schaltung dieser Spulen die Amperewindungszahl im Joch die gleiche bleibt, also ohne Ver-endung von anderen Strommessern oder -wandlern die Bestimmung der Stromstärke durch ein einziges Instrument erfolgt. Claim: Current measurement by means of a single ammeter for switching devices, in which coils can be switched by existing devices in any series parallel connection, characterized in that all forward or return lines of these coils pass through a current transformer yoke, so that despite the change in the circuit of these coils, the number of ampere turns in the yoke the same remains, i.e. the determination of the current intensity is carried out by a single instrument without the use of other ammeters or transformers.
DEV19902D 1925-02-08 1925-02-08 Current measurement using a single ammeter for switching devices Expired DE423719C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV19902D DE423719C (en) 1925-02-08 1925-02-08 Current measurement using a single ammeter for switching devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV19902D DE423719C (en) 1925-02-08 1925-02-08 Current measurement using a single ammeter for switching devices

Publications (1)

Publication Number Publication Date
DE423719C true DE423719C (en) 1926-01-09

Family

ID=7578168

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV19902D Expired DE423719C (en) 1925-02-08 1925-02-08 Current measurement using a single ammeter for switching devices

Country Status (1)

Country Link
DE (1) DE423719C (en)

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