JPS5478540A - Sheathed heater and making method thereof - Google Patents
Sheathed heater and making method thereofInfo
- Publication number
- JPS5478540A JPS5478540A JP14674977A JP14674977A JPS5478540A JP S5478540 A JPS5478540 A JP S5478540A JP 14674977 A JP14674977 A JP 14674977A JP 14674977 A JP14674977 A JP 14674977A JP S5478540 A JPS5478540 A JP S5478540A
- Authority
- JP
- Japan
- Prior art keywords
- sheathed heater
- insulating property
- insulator
- heater
- powder containing
- 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.)
- Granted
Links
Landscapes
- Resistance Heating (AREA)
Abstract
PURPOSE: To raise the insulating property, by using magnesia powder containing 1 to 30 % by weight of inorganic drying material as an insulator for the sheathed heater and by sealing up the terminal parts of the heater with varnish etc.
CONSTITUTION: The magnesia powder containing, for example, a CaO-SiO2 com- pound is used as the insulator 5 for the sheathed heater to dry moisture invading into a pipe. The terminal parts are sealed up with rubber, resin or varnish having an electric insulating property and a flame retarding property. Even under a strong electric field, hydrogen ions or hydroxyl ions are prevented from moving,. As a result, the insulating property is heightened.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14674977A JPS5478540A (en) | 1977-12-06 | 1977-12-06 | Sheathed heater and making method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14674977A JPS5478540A (en) | 1977-12-06 | 1977-12-06 | Sheathed heater and making method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5478540A true JPS5478540A (en) | 1979-06-22 |
JPS5549396B2 JPS5549396B2 (en) | 1980-12-11 |
Family
ID=15414714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14674977A Granted JPS5478540A (en) | 1977-12-06 | 1977-12-06 | Sheathed heater and making method thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5478540A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749189A (en) * | 1980-09-08 | 1982-03-20 | Matsushita Electric Ind Co Ltd | Sheathed heater and method of producing same |
JPS57202083A (en) * | 1981-06-03 | 1982-12-10 | Matsushita Electric Ind Co Ltd | Sheathed heater |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50144152A (en) * | 1974-05-10 | 1975-11-19 | ||
JPS52118299A (en) * | 1976-03-30 | 1977-10-04 | Sakai Shiyuuichi | Powder material for nonnmoistureeabsorbing electric insulato5r |
-
1977
- 1977-12-06 JP JP14674977A patent/JPS5478540A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50144152A (en) * | 1974-05-10 | 1975-11-19 | ||
JPS52118299A (en) * | 1976-03-30 | 1977-10-04 | Sakai Shiyuuichi | Powder material for nonnmoistureeabsorbing electric insulato5r |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749189A (en) * | 1980-09-08 | 1982-03-20 | Matsushita Electric Ind Co Ltd | Sheathed heater and method of producing same |
JPS6322034B2 (en) * | 1980-09-08 | 1988-05-10 | Matsushita Electric Ind Co Ltd | |
JPS57202083A (en) * | 1981-06-03 | 1982-12-10 | Matsushita Electric Ind Co Ltd | Sheathed heater |
JPH0136239B2 (en) * | 1981-06-03 | 1989-07-28 | Matsushita Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS5549396B2 (en) | 1980-12-11 |
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