IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0889097
(2010-09-23)
|
등록번호 |
US-8097187
(2012-01-17)
|
발명자
/ 주소 |
- Rapp, Kevin J.
- Corkran, Jerry L.
- Gauger, Gary A.
- McShane, Charles Patrick
|
출원인 / 주소 |
|
대리인 / 주소 |
Shumaker & Sieffert, P.A.
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
13 |
초록
A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.
대표청구항
▼
1. An electrical device with a dielectric fluid therein, wherein the dielectric fluid comprises: (a) 1% to 50% by weight of a composition comprising:a polyol ester derived from:(1) a reaction of a polyol having two to four hydroxyl moieties with a fatty acid having 4 to 12 carbon atoms, wherein the
1. An electrical device with a dielectric fluid therein, wherein the dielectric fluid comprises: (a) 1% to 50% by weight of a composition comprising:a polyol ester derived from:(1) a reaction of a polyol having two to four hydroxyl moieties with a fatty acid having 4 to 12 carbon atoms, wherein the fatty acid is saturated or unsaturated; or(2) the transesterification of a polyol having two to four hydroxyl moieties with a methyl ester of a fatty acid having 4 to 12 carbon atoms, wherein the fatty acid is saturated or unsaturated;(b) 0.1% to 2.5% by weight of at least one additive selected from an antioxidant, an antimicrobial agent, and a pour point depressant; and(c) the balance a petroleum derived mineral oil or a petroleum derived synthetic oil. 2. The electrical device of claim 1, wherein the polyol is selected from the group consisting of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 2,3-butanediol, 2-ethyl-1,3-propanediol, 2-ethyl-2-butyl-1,3-propanediol, neopentyl glycol, 2,2,4-trimethyl-1,3-pentanediol, trimethylolpropane (TMP), pentaerythritol and dipentaerythritol. 3. The electrical device of claim 2, wherein the polyol is selected from the group consisting of neopentyl glycol, trimethylolpropane, and pentaerythritol. 4. The electrical device of claim 3, wherein the polyol is pentaerythritol. 5. The electrical device of claim 1, wherein the additive is an antioxidant. 6. The electrical device of claim 1, wherein the electrical device is a transformer. 7. The electrical device of claim 1, wherein the composition comprises 5% to 50% by weight of the dielectric fluid. 8. The electrical device of claim 1, wherein the composition comprises 5% to 25% by weight of the dielectric fluid. 9. An electrical device with a dielectric fluid therein, wherein the dielectric fluid comprises: (a) 1% to 50% by weight of a composition comprising an ester-containing compound selected from the group consisting of neopentyl glycol esters, trimethylolpropane esters, pentaerythritol esters, dipentaerythritol esters, and combinations thereof;(b) 0.1% to 2.5% by weight of at least one additive selected from an antioxidant, an antimicrobial agent, and a pour point depressant; and(c) the balance a petroleum derived mineral oil or a petroleum derived synthetic oil. 10. The electrical device of claim 9, wherein the trimethylolpropane (TMP) esters are selected from the group consisting of TMP tri(2-ethyl hexanoate), TMP triheptanoate, TMP dioctanoate, TMP trioctanoate, TMP trioleate, TMP tricaprylate, TMP tricaprate, TMP tripelargonate, TMP triisononanoate, and combinations thereof. 11. The electrical device of claim 9, wherein the pentaerythritol (PE) esters are selected from the group consisting of PE tetraisooctanoate, PE tetraoleate, PE tetrapelargonate, PE tetraoctanoate, PE tetra(2-ethyl hexanoate), PE dioctanate, PE dilaurate, and combinations thereof. 12. The electrical device of claim 9, wherein the additive is an antioxidant. 13. The electrical device of claim 9, wherein the electrical device is a transformer. 14. The electrical device of claim 9, wherein the composition comprises 5% to 50% by weight of the dielectric fluid. 15. The electrical device of claim 9, wherein the composition comprises 5% to 25% by weight of the dielectric fluid. 16. A method for retrofilling a transformer with a first dielectric fluid, comprising: removing the first dielectric fluid from the transformer; andreplacing the first dielectric fluid with the dielectric fluid of claim 1.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.