DE125827C - - Google Patents
Info
- Publication number
- DE125827C DE125827C DE1901125827D DE125827DD DE125827C DE 125827 C DE125827 C DE 125827C DE 1901125827 D DE1901125827 D DE 1901125827D DE 125827D D DE125827D D DE 125827DD DE 125827 C DE125827 C DE 125827C
- Authority
- DE
- Germany
- Prior art keywords
- dynamo
- operating voltage
- house
- voltmeter
- network
- 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
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Ein kleiner, für die Betriebsspannung gebauter Gleichstrom-; Wechselstrom- oder Mehrphasenstrommotor wird mit einer gut isolirten kleinen Dynamomaschine direct gekuppelt. Die Dynamomaschine ist im Stande, die für die Messung . erforderliche Betriebsspannung zu liefern. In der beiliegenden Zeichnung bedeutet M den Motor, D die Dynamomaschine, F das Strafsenleitungsnetz, S die Hausanschlufssicherungen, H die Leitungen des Hausanschlusses. Nachdem die Leitungen H des Hausanschlusses von den Anschlufssicherungen S abgeschaltet sind, wird an dieselben der kleine, besonders gesicherte Motor M angeschlossen, der die Dynamomaschine D antreibt. Ein Voltmeterumschalter U gestattet, in einer Stellung die Spannung der Dynamomaschine mit Hülfe des aperiodischen Voltmeters V zu messen, in der anderen den negativen Pol der Dynamomaschine mit der zu messenden Leitung, den anderen mit Erde zu verbinden. Der Isolationswiderstand ergiebt sich alsdann aus der FormelA small direct current built for the operating voltage; AC or polyphase current motor is directly coupled to a well-insulated little dynamo machine. The dynamo is capable of making the measurement. to supply the required operating voltage. In the accompanying drawing, M denotes the motor, D the dynamo, F the penalty line network, S the house fuses, H the house connection lines. After the lines H of the house connection have been disconnected from the connection fuses S , the small, specially protected motor M , which drives the dynamo D, is connected to them. A voltmeter switch U allows the voltage of the dynamo to be measured in one position with the aid of the aperiodic voltmeter V , in the other to connect the negative pole of the dynamo to the line to be measured, and the other to earth. The insulation resistance is then obtained from the formula
in der W den Widerstand des Mefsgeräthes und α, und <j2 die Voltmeterangaben in den verschiedenen Stellungen des Voltmeterumschalters bedeuten.in the W denotes the resistance of the measuring device and α, and <j 2 denote the voltmeter data in the various positions of the voltmeter switch.
Claims (1)
Verfahren zur Messung der Isolation einzelner Hausanschlüsse eines im Betriebe befindlichen elektrischen Leitungsnetzes mit Betriebsspannung, dadurch gekennzeichnet, dafs eine kleine Dynamomaschine, welche von einem vom Netz gespeisten Motor angetrieben wird, die zur Messung erforderliche Betriebsspannung liefert.Patent claim:
Method for measuring the insulation of individual house connections of an in-house electrical line network with operating voltage, characterized in that a small dynamo, which is driven by a motor fed by the network, supplies the operating voltage required for the measurement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE125827T | 1901-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE125827C true DE125827C (en) | 1901-12-07 |
Family
ID=33426549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1901125827D Expired DE125827C (en) | 1901-04-03 | 1901-04-03 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE125827C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6406676B1 (en) | 1999-06-01 | 2002-06-18 | Boliden Mineral Ab | Method of purifying acid leaching solution by precipitation and oxidation |
-
1901
- 1901-04-03 DE DE1901125827D patent/DE125827C/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6406676B1 (en) | 1999-06-01 | 2002-06-18 | Boliden Mineral Ab | Method of purifying acid leaching solution by precipitation and oxidation |
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