Dielectric, dielectric composition and use thereof, electric device, and supply method

Patent metadata

Field	Value
Publication number	US-2023037700-A1
Application number	US-202217937602-A
Country	US
Kind code	A1
Filing date	Oct 3, 2022
Priority date	Apr 10, 2020
Publication date	Feb 9, 2023
Grant date	—

Abstract

A dielectric, including a halogenated olefin having from 2 to 4 carbon atoms, and having a water content of 6000 ppm or less in terms of mass.

First claim

What is claimed is:

1 . A dielectric, comprising a halogenated olefin having from 2 to 4 carbon atoms, and having a water content of 6000 ppm or less in terms of mass.

2 . The dielectric according to claim 1 , wherein the halogenated olefin comprises at least one selected from the group consisting of (E)-1-chloro-2,3,3,3-tetrafluoropropene, (Z)-1-chloro-2,3,3,3-tetrafluoropropene, (E)-1, 1,1,4,4,4-hexafluorobut-2-ene, (Z)-1,1,1,4,4,4-hexafluorobut-2-ene, (E)-1-chloro-3,3,3-trifluoropropene, (Z)-1-chloro-3,3,3-trifluoropropene, 1,1-difluoroethylene, (Z)-1,2-difluoroethylene, (E)-1,2-difluoroethylene, trifluoroethylene, 2,3,3,3-tetrafluoro-1-propene, (E)-1,3,3,3-tetrafluoropropene, and (Z)-1,3,3,3-tetrafluoropropene

3 . The dielectric according to claim 1 , wherein the halogenated olefin comprises at least one of (E)-1-chloro-2,3,3,3-tetrafluoropropene or (Z)-1-chloro-2,3,3,3-tetrafluoropropene.

4 . A dielectric composition, comprising: a halogenated olefin having from 2 to 4 carbon atoms; and a diluent gas, the diluent gas comprising carbon dioxide, and a water content of the dielectric composition being 6000 ppm or less in terms of mass.

5 . The dielectric composition according to claim 4 , wherein a content of the halogenated olefin in a gaseous state is 70% by volume or less.

6 . The dielectric composition according to claim 4 , wherein:
the halogenated olefin comprises at least one of (E)-1-chloro-2,3,3,3-tetrafluoropropene or (Z)-1-chloro-2,3,3,3-tetrafluoropropene; and a total content of (E)-1-chloro-2,3,3,3-tetrafluoropropene and (Z)-1-chloro-2,3,3,3-tetrafluoropropene when the dielectric composition is in a gaseous state 70% by volume or less.

7 . The dielectric composition according to claim 4 , having a condensation temperature of 0° C. or lower.

8 . The dielectric composition according to claim 4 , wherein a water content of the diluent gas is from 2.0 ppm to 6000.0 ppm in terms of mass.

9 . An electrical insulating medium, comprising the dielectric composition according to claim 4 .

10 . An electric arc extinguishing medium, comprising the dielectric composition according to claim 4 .

11 . An electric device comprising: an electric component; and a closed vessel housing the dielectric composition according to claim 4 .

12 . The electric device according to claim 11 , which is a circuit breaker, a current breaker, a gas-insulated transmission line, a gas-insulated transformer, a gas-insulated substation, a gas-insulated switch, a gas-insulated breaker, or a gas-insulated load-break switch.

13 . A supply method, comprising supplying the dielectric composition according to claim 4 to a closed vessel in an electric device that is a circuit breaker, a current breaker, a gas-insulated transmission line, a gas-insulated transformer, a gas-insulated substation, a gas-insulated switch, a gas-insulated breaker, or a gas-insulated load-break switch.

14 . A dielectric composition, comprising: a halogenated olefin having from 2 to 4 carbon atoms; and a diluent gas, the diluent gas comprising air, and a water content of the dielectric composition being 800 ppm or less in terms of mass.

15 . The dielectric composition according to claim 14 , wherein a content of the halogenated olefin in a gaseous state is 70% by volume or less.

16 . The dielectric composition according to claim 14 , wherein:
the halogenated olefin comprises at least one of (E)-1-chloro-2,3,3,3-tetrafluoropropene or (Z)-1-chloro-2,3,3,3-tetrafluoropropene; and a total content of (E)-1-chloro-2,3,3,3-tetrafluoropropene and (Z)-1-chloro-2,3,3,3-tetrafluoropropene when the dielectric composition is in a gaseous state 70% by volume or less.

17 . The dielectric composition according to claim 14 , having a condensation temperature of 0° C. or lower.

18 . The dielectric composition according to claim 14 , wherein a water content of the diluent gas is from 2.0 ppm to 6000.0 ppm in terms of mass.

19 . An electrical insulating medium, comprising the dielectric composition according to claim 14 .

20 . An electric arc extinguishing medium, comprising the dielectric composition according to claim 14 .

21 . An electric device comprising: an electric component; and a closed vessel housing the dielectric composition according to claim 14 .

22 . The electric device according to claim 21 , which is a circuit breaker, a current breaker, a gas-insulated transmission line, a gas-insulated transformer, a gas-insulated substation, a gas-insulated switch, a gas-insulated breaker, or a gas-insulated load-break switch.

23 . A supply method, comprising supplying the dielectric composition according to claim 14 to a closed vessel in an electric device that is a circuit breaker, a current breaker, a gas-insulated transmission line, a gas-insulated transformer, a gas-insulated substation, a gas-insulated switch, a gas-insulated breaker, or a gas-insulated load-break switch.

Assignees

• Agc Inc

Inventors

• Hayamizu Hiroki
• Chinsoga Tamaki
• Fukushima Masato
• Nakamura Masahiko

Classifications

• H01B3/56 Primary

  gases · CPC title

• H02B13/055

  Features relating to the gas · CPC title

• C08L27/12 Primary

  containing fluorine atoms · CPC title

• H01H33/22

  Selection of fluids for arc-extinguishing · CPC title

• H01H2033/566

  Avoiding the use of SF6 · CPC title