CH220025A - Paper for electrical capacitors. - Google Patents
Paper for electrical capacitors.Info
- Publication number
- CH220025A CH220025A CH220025DA CH220025A CH 220025 A CH220025 A CH 220025A CH 220025D A CH220025D A CH 220025DA CH 220025 A CH220025 A CH 220025A
- Authority
- CH
- Switzerland
- Prior art keywords
- paper
- electrical capacitors
- dielectric
- capacitor
- content
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229920001131 Pulp (paper) Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/485—Other fibrous materials fabric
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/52—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials wood; paper; press board
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/16—Organic dielectrics of fibrous material, e.g. paper
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Papier für elektrische Kondensatoren. Die Erfindung betrifft ein Papier, das als isolierendes Medium in elektrischen Konden satoren verwendet werden soll und bezweckt eine Verbesserung der Dielektrizitätseigen- schaften dieser Papiere.
Die Güte elektrischer Kondensatoren ist umso grösser, je geringer die dielektrischen Verluste und je unabhängiger sie von Tem peratur und Spannung sind. Da die dielek- trischen Verluste in Form von Wärmeenergie in Erscheinung treten, tritt insbesondere bei fehlender Wärmeabfuhr im Kondensator rasch eine solche Temperatursteigerung auf, dass das Isolatorpapier sich zersetzt und Durch schläge zulässt.
Dieser Nachteil wird noch verstärkt, wenn die dielektrischen Eigen schaften des Papieres so beschaffen sind, dass die dielektrischen Verluste bei höherer Tem peratur grösser als bei niedriger Temperatur sind. In diesem Falle steigern sich die dielek- trischen Verluste und die Wärmeentwicklung gegenseitig, so dass der Kondensator in Kürze infolge der auftretenden Durchschläge zer stört wird.
Die Erfindung beruht auf der Erkenntnis, dass die dielektrischen Eigenschaften von Kondensatorpapier von seiner chemischen Zusammensetzung weitgehend abhängig sind. Die Erfindung betrifft demzufolge ein Papier für elektrische Kondensatoren, dessen Kenn zeichen darin besteht,
da.ss es aus Holzzell- stoffen mit einem Alpha-Zellulosegehalt von 92 bis 98 % und geringem Aschegehalt be- steht. Ein solches Papier ergibt einen Kon densator, bei dem der dielektrische Verlust winkel (tg8) bis zu Temperaturen von 80 0 gleichbleibt oder.
unter Umständen sogar etwas abnimmt und bis 100 0 nur ganz wenig wie der ansteigt. Die tga-Temperaturkurve ver läuft also bis zu 80 0 flach und steigt bis 100 0 ganz allmählich an. Der Verlustwinkel ist dabei im Vergleich zu dem der bisher bekannten Kondensatorpapiere 10 bis 15 % kleiner, so dass der Kondensator im Betrieb an und für sich eine geringere Erwärmung erfährt.
Die beschriebenen günstigen Eigen schaften werden mit Papieren erreicht, deren Alpha-Zellulosegehalt zwischen 92 bis 98 % beträgt, also wesentlich höher als der von normalen Papieren mit 85 bis ss ;'" liegt.
Da bei den chemischen Behandlungen, die zur Anreicherung der Alpha-Zellulose im Papierstoff führen auch aschehaltige Begleit- stoffe entfernt werden, verbessern sich die dielektrischen Eigenschaften des Papieres aueli aus diesem Grunde.
Paper for electrical capacitors. The invention relates to a paper which is to be used as an insulating medium in electrical capacitors and aims to improve the dielectric properties of these papers.
The quality of electrical capacitors is greater, the lower the dielectric losses and the more independent they are of temperature and voltage. Since the dielectric losses occur in the form of thermal energy, particularly when there is no heat dissipation in the condenser, such a temperature increase quickly occurs that the insulating paper decomposes and allows breakdowns.
This disadvantage is exacerbated if the dielectric properties of the paper are such that the dielectric losses are greater at higher temperatures than at lower temperatures. In this case, the dielectric losses and the heat development mutually increase, so that the capacitor is shortly destroyed as a result of the breakdowns that occur.
The invention is based on the knowledge that the dielectric properties of capacitor paper are largely dependent on its chemical composition. The invention therefore relates to a paper for electrical capacitors, the characteristics of which is
that it is made from wood pulp with an alpha cellulose content of 92 to 98% and a low ash content. Such a paper produces a capacitor in which the dielectric loss angle (tg8) remains the same up to temperatures of 80 ° or.
possibly even decreases somewhat and increases only a little like that up to 100 0. The tga temperature curve is flat up to 80 ° and rises very gradually up to 100 °. The loss angle is 10 to 15% smaller than that of the previously known capacitor papers, so that the capacitor itself experiences less heating during operation.
The favorable properties described are achieved with papers whose alpha cellulose content is between 92 to 98%, that is, much higher than that of normal papers with 85 to ss; '".
Since during the chemical treatments that lead to the accumulation of alpha cellulose in the paper stock, ash-containing accompanying substances are also removed, the dielectric properties of the paper are improved for this reason.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH121610D DE756215C (en) | 1940-11-08 | 1940-11-08 | Dielectric paper for electrostatic capacitors |
Publications (1)
Publication Number | Publication Date |
---|---|
CH220025A true CH220025A (en) | 1942-03-15 |
Family
ID=7451533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH220025D CH220025A (en) | 1940-11-08 | 1941-04-03 | Paper for electrical capacitors. |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH220025A (en) |
DE (1) | DE756215C (en) |
FR (1) | FR871538A (en) |
-
1940
- 1940-11-08 DE DESCH121610D patent/DE756215C/en not_active Expired
-
1941
- 1941-04-03 CH CH220025D patent/CH220025A/en unknown
- 1941-04-16 FR FR871538D patent/FR871538A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR871538A (en) | 1942-04-29 |
DE756215C (en) | 1952-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH220025A (en) | Paper for electrical capacitors. | |
DE546849C (en) | Implementation through metal housings, especially for electrical capacitors | |
DE635205C (en) | Method for gluing fiber material | |
AT69634B (en) | A method for producing heat-resistant, electrically protective sheets, plates, etc. from split mica, mica waste or the like. | |
KR950026392A (en) | Manufacturing method of dietary fiber from white ginseng | |
DE4212452C2 (en) | Cold briquetted coal | |
DE466533C (en) | Electrical capacitor with a dielectric made of fiber | |
AT202667B (en) | Electric capacitor | |
DE756622C (en) | Electric capacitor | |
AT205144B (en) | Electrical capacitor with impregnated paper dielectric | |
DE857522C (en) | Method for achieving a tight winding termination of electrical capacitor windings with a thermoplastic dielectric | |
DE424247C (en) | capacitor | |
AT159255B (en) | Electrolytic capacitor. | |
DE734895C (en) | Method for the production of a sleeve for compressed yeast pieces | |
DE601593C (en) | Process for the production of building panels from pulp | |
DE510733C (en) | Putty for attaching bases to the glass tubes of electric lamps or discharge vessels | |
AT139607B (en) | Lighting system with one or more electric discharge tubes. | |
AT93752B (en) | Electrical box switch. | |
AT151319B (en) | Artificial sausage casing. | |
DE1765875A1 (en) | An impregnated paper, a liquid dielectric impregnation agent and a dielectric system containing an epoxy compound | |
US1598260A (en) | Pulp board and method of making same | |
DE467223C (en) | Process for the production of insulating materials from peat | |
CH237270A (en) | Electric capacitor. | |
AT111192B (en) | Lamp holder. | |
DE671969C (en) | Molding powder |