DE840568C - Auxiliary converter for transmission ratio meter for power transformers - Google Patents
Auxiliary converter for transmission ratio meter for power transformersInfo
- Publication number
- DE840568C DE840568C DEH293A DEH0000293A DE840568C DE 840568 C DE840568 C DE 840568C DE H293 A DEH293 A DE H293A DE H0000293 A DEH0000293 A DE H0000293A DE 840568 C DE840568 C DE 840568C
- Authority
- DE
- Germany
- Prior art keywords
- auxiliary converter
- transmission ratio
- power transformers
- ratio meter
- converter
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Ac-Ac Conversion (AREA)
Description
Das Patent 684 052 betrifft eine Einrichtung zur Bestimmung des Übersetzungsverhältnisses von Leistungstransformatoren bis zu den höchsten üblichen Nennspannungen mit Niederspannung in einer Kompensationsschaltung. Bei den Übersetzungsverhältnismessern nach dem Hauptpatent erfolgt die E(ompensation durch Vergleich der Spannungen zwischen dem Abgriff des parallel zu der Hochspannungsseite des zu untersuchenden Transformators gelegten Spannungsteilers und der Sekundärwicklung eines an die Niederspannungswicklung angeschlossenen Hilfswandlers mit veränderlichem Übersetzungsverhältnis. Die wesentlichsten Bestandteile dieses Obersetzungsverhältnismessers sind der Ohmsche Spannungsteiler, das Nullinstrument und der Hilfswandler. Die Erfindung befaßt sich mit dem Hilfswandler. Infolge der vielen Anforderungen, welche an diesen Hilfswandler gestellt werden (vernachlässigbar kleiner Eigenverbrauch bei höchster Genauigkeit und einer großen Anzahl von Übersetzungsverhältnissen), stellt er den wertvollsten Teil der Einrichtung dar und bestimmt im wesentlichen mit ihren Preis. Seine Vereinfachung ist daher v<)n ausschlaggebender Bedeutung. The 684,052 patent relates to a device for determining the gear ratio from power transformers to the highest common nominal voltages with low voltage in a compensation circuit. With the transmission ratio meters according to The main patent is compensated by comparing the tensions between the Tapping of the parallel to the high-voltage side of the transformer to be examined connected voltage divider and the secondary winding one to the low-voltage winding connected auxiliary converter with variable transmission ratio. The most essential Components of this transmission ratio meter are the ohmic voltage divider, the zero instrument and the auxiliary converter. The invention is concerned with the auxiliary converter. As a result of the many requirements that are placed on this auxiliary converter (negligibly small own consumption with the highest accuracy and a large one Number of gear ratios), it represents the most valuable part of the facility and essentially determines its price. Its simplification is therefore v <) n crucial importance.
Da die Hilfswandler als stoßfugenfreie Wandler ausgeführt werden müssen, sind die Kosten für die Aufbringung der Wicklungen das Ausschlaggebende. Eine wesentliche Vereinfachung wird erzielt, wenn man gemäß der vorliegenden Erfindung den Wandler in Sparschaltung ausführt. Es entfällt dann die Sekundärwicklung, die z. B. in der Praxis ein Drittel der Gesamtwicklung eines Wandlers in der bisherigen Ausführungsform mit zwei Wicklungen ausmacht. Ein weiterer damit verbundener Vorteil ist die Verringerung des Eigenverbrauchs des Hilfswandlers und damit eine Verkleinerung der Belastung des Prüflings bei der Prüfung seines Leerlaufübersetzungsverhältnisses. Because the auxiliary converters are designed as butt joint-free converters the cost of applying the windings is crucial. A substantial simplification is achieved when following the present invention carries out the converter in economy circuit. The secondary winding is then omitted z. B. in practice a third of the total winding of a converter in the previous one Embodiment with two windings makes up. Another related benefit is the reduction of the self-consumption of the auxiliary converter and thus a reduction in size the load on the test object when testing its idle gear ratio.
In der Abbildung ist der Anschluß eines derartigen Hilfswandlers dargestellt. I ist der Spannungsteiler, 2 das Meßinstrument und 3 der Hilfswandler, der, wie dargestellt, als Spartransformator mit entsprechenden Abgriffen ausgebildet ist. The illustration shows the connection of such an auxiliary converter shown. I is the voltage divider, 2 the measuring instrument and 3 the auxiliary converter, which, as shown, is designed as an autotransformer with appropriate taps is.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH293A DE840568C (en) | 1949-10-29 | 1949-10-29 | Auxiliary converter for transmission ratio meter for power transformers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH293A DE840568C (en) | 1949-10-29 | 1949-10-29 | Auxiliary converter for transmission ratio meter for power transformers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE840568C true DE840568C (en) | 1952-06-03 |
Family
ID=7142085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH293A Expired DE840568C (en) | 1949-10-29 | 1949-10-29 | Auxiliary converter for transmission ratio meter for power transformers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE840568C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4525665A (en) * | 1982-08-06 | 1985-06-25 | Smalley Daniel S | Induction furnace monitor |
US4612498A (en) * | 1982-08-06 | 1986-09-16 | Smalley Daniel S | Induction furnace fault locator |
-
1949
- 1949-10-29 DE DEH293A patent/DE840568C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4525665A (en) * | 1982-08-06 | 1985-06-25 | Smalley Daniel S | Induction furnace monitor |
US4612498A (en) * | 1982-08-06 | 1986-09-16 | Smalley Daniel S | Induction furnace fault locator |
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