US2016155A - Electrical insulation - Google Patents
Electrical insulation Download PDFInfo
- Publication number
- US2016155A US2016155A US685423A US68542333A US2016155A US 2016155 A US2016155 A US 2016155A US 685423 A US685423 A US 685423A US 68542333 A US68542333 A US 68542333A US 2016155 A US2016155 A US 2016155A
- Authority
- US
- United States
- Prior art keywords
- copper
- conductor
- electrical insulation
- halogen
- combinations
- 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 - Lifetime
Links
- 238000010292 electrical insulation Methods 0.000 title description 3
- 229910052802 copper Inorganic materials 0.000 description 17
- 239000010949 copper Substances 0.000 description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 15
- 239000004020 conductor Substances 0.000 description 15
- 229910052736 halogen Inorganic materials 0.000 description 8
- 150000002367 halogens Chemical class 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- -1 copper halide Chemical class 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021589 Copper(I) bromide Inorganic materials 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- NKNDPYCGAZPOFS-UHFFFAOYSA-M copper(i) bromide Chemical compound Br[Cu] NKNDPYCGAZPOFS-UHFFFAOYSA-M 0.000 description 1
- 229940045803 cuprous chloride Drugs 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
- H01B3/105—Wires with oxides
Definitions
- the present invention relates to electrical insulation and more particularly to inorganically insulated electrical conductors.
- these difliculties can be avoided if the insulating coating on the copper conductor is produced directly from copper combinations. It has been shown that copper halide and its complex combinations, e. g. cuprous chloride or cuprous bromide are suitable for this purpose. They are produced either on the copper conductor or are placed on it as combinations and then fused, or are applied on the conductor in a fused state.
- copper halide and its complex combinations e. g. cuprous chloride or cuprous bromide are suitable for this purpose. They are produced either on the copper conductor or are placed on it as combinations and then fused, or are applied on the conductor in a fused state.
- the production can be carried out in a known manner by'electrolysis.
- the copper conductor is wired as anode in a bath which contains the halogen ion. It may be convenient to add acids, 6. g. phosphoric acid, or salts of acids, of which the decomposition voltage lies above the decomposition voltage of the corresponding halogen combinations, in order to keep the hydrogen ion concentration within the limits necessary for undisturbed procedure of the reaction.
- the melt container may be manufactured of copper or other copper plated material.
- the layer manufactured in accordance with the invention forms a glassy coating which is absolutely impervious. It is also possible to add filling materials such as asbestos to the insulating layer, and, for example, the deposited material which is at first porous can be mixed with as- 5 bestos and fused to a homogeneous substance at a higher temperature. Filling materials such as quartz meal, mica powder and so on can be scattered on the porous layer of insulation before heat treatment and then fusing can be done. Further, there is the possibility of placing asbestos covered wires in an electrolysis bath, producing the insulating precipitates between the covering and the conductor and fusing to a substance with the asbestos by means of suitable 15 temperature treatment. The conductor can also be exposed to the action of free halogen, e. g.
- a process for the production of electrically 3 insulated copper conductors which comprises subjecting the copper conductor to a heated gas containing halogen.
- a process for the production of electrically insulated copper conductors which comprises drawing a heated copper conductor through a cold halogen atmosphere.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Insulated Conductors (AREA)
Description
Patented Oct. 1, 1935 UNITED STATES ELECTRICAL INSULATION Robert H. Miiller, Berlin, Germany, assignor to General Electric Company, a corporation of New York No Drawing. Original application 1933, Serial No. 650,382. plication August 16, 1933,
January 6, Divided and this ap- Serial No. 685,423. In
Germany January 12, 1932 3 Claims.
The present invention relates to electrical insulation and more particularly to inorganically insulated electrical conductors.
It is often desirable to insulate copper con- 5 ductors with coatings which withstand temperatures up to 200 or 300 0. Organic varnish coat- .ings are not sufficient for this purpose. The well known insulations with aluminum oxide or zinc combinations offer great difiiculty in their pro duction on copper conductors. Further they are ordinarily porous and therefore usually guarantee no protection against moisture.
According to the invention these difliculties can be avoided if the insulating coating on the copper conductor is produced directly from copper combinations. It has been shown that copper halide and its complex combinations, e. g. cuprous chloride or cuprous bromide are suitable for this purpose. They are produced either on the copper conductor or are placed on it as combinations and then fused, or are applied on the conductor in a fused state.
The production can be carried out in a known manner by'electrolysis. The copper conductor is wired as anode in a bath which contains the halogen ion. It may be convenient to add acids, 6. g. phosphoric acid, or salts of acids, of which the decomposition voltage lies above the decomposition voltage of the corresponding halogen combinations, in order to keep the hydrogen ion concentration within the limits necessary for undisturbed procedure of the reaction.
When the fused simple or complex copper halide is used, a little copper is added to the melt, to prevent oxidation. To this end the melt container may be manufactured of copper or other copper plated material.
The layer manufactured in accordance with the invention forms a glassy coating which is absolutely impervious. It is also possible to add filling materials such as asbestos to the insulating layer, and, for example, the deposited material which is at first porous can be mixed with as- 5 bestos and fused to a homogeneous substance at a higher temperature. Filling materials such as quartz meal, mica powder and so on can be scattered on the porous layer of insulation before heat treatment and then fusing can be done. Further, there is the possibility of placing asbestos covered wires in an electrolysis bath, producing the insulating precipitates between the covering and the conductor and fusing to a substance with the asbestos by means of suitable 15 temperature treatment. The conductor can also be exposed to the action of free halogen, e. g.
in a heated gas containing halogen or by drawing the heated conductor through a cold halogen atmosphere. 20
This application is a division of my copending application, Serial No. 650,382 filed January 6, 1933.
What I claim as new and desire to secure by Letters Patent of the United States is: 1. A process for the production of electrically insulated copper conductors which comprises exposing the copper conductor to the action of free halogen.
2. A process for the production of electrically 3 insulated copper conductors which comprises subjecting the copper conductor to a heated gas containing halogen.
3. A process for the production of electrically insulated copper conductors which comprises drawing a heated copper conductor through a cold halogen atmosphere.
ROBERT H. MiiILER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US685423A US2016155A (en) | 1933-01-06 | 1933-08-16 | Electrical insulation |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US650382A US2047029A (en) | 1932-01-12 | 1933-01-06 | Electrical insulation |
| US685423A US2016155A (en) | 1933-01-06 | 1933-08-16 | Electrical insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2016155A true US2016155A (en) | 1935-10-01 |
Family
ID=27095845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US685423A Expired - Lifetime US2016155A (en) | 1933-01-06 | 1933-08-16 | Electrical insulation |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2016155A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2585037A (en) * | 1947-04-16 | 1952-02-12 | Sprague Electric Co | Insulated electrical conductor |
| US3028447A (en) * | 1958-10-22 | 1962-04-03 | Bell Telephone Labor Inc | Conductors insulated with aluminum fluoride |
| US3129124A (en) * | 1959-12-30 | 1964-04-14 | Gen Electric | Process for producing interlaminar insulation for electrical apparatus |
-
1933
- 1933-08-16 US US685423A patent/US2016155A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2585037A (en) * | 1947-04-16 | 1952-02-12 | Sprague Electric Co | Insulated electrical conductor |
| US3028447A (en) * | 1958-10-22 | 1962-04-03 | Bell Telephone Labor Inc | Conductors insulated with aluminum fluoride |
| US3129124A (en) * | 1959-12-30 | 1964-04-14 | Gen Electric | Process for producing interlaminar insulation for electrical apparatus |
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