Claims
- 1. A partial discharge (PD) coupler for coupling electrical machinery to partial discharge analysis testing equipment, the PD coupler comprising:
- at least one capacitor capable of withstanding high voltages;
- potting material surrounding the at least one capacitor for providing flashover protection;
- an adhesion promoting material situated between the at least one capacitor and the potting material; and
- a fuse for protecting the electrical machinery, the fuse physically and electrically connected in series to the at least one capacitor, the at least one capacitor and the fuse capable of passing high frequency partial discharges with minimal attenuation.
- 2. The PD coupler of claim 1, further including a housing surrounding the at least one capacitor, the potting material, and the fuse.
- 3. The PD coupler of claim 2, wherein the housing comprises a polycarbonate tube.
- 4. The PD coupler of claim 3, wherein the housing further includes two end caps, each end cap attached to a respective end of the polycarbonate tube and including a mounting terminal.
- 5. A partial discharge (PD) coupler for coupling electrical machinery to partial discharge analysis testing equipment, the PD coupler comprising:
- at least one ceramic capacitor capable of withstanding high voltages;
- a fuse for protecting the electrical machinery, the fuse physically and electrically connected in series to the at least one capacitor, the at least one capacitor and the fuse capable of passing high frequency partial discharges with minimal attenuation,
- potting material surrounding the at least one capacitor and the fuse for providing flashover protection.
- 6. The PD coupler of claim 5, wherein the potting material is a thermoset material or an elastomeric material.
- 7. A partial discharge (PD) coupler for coupling electrical machinery to partial discharge analysis testing equipment, the PD coupler comprising:
- at least one capacitor capable of withstanding high voltages;
- a fuse for protecting the electrical machinery, the fuse physically and electrically connected in series to the at least one capacitor, the at least one capacitor and the fuse capable of passing high frequency partial discharges with minimal attenuation; and
- potting material including an elastomeric portion surrounding the at least one capacitor and a thermoset portion surrounding the fuse.
- 8. A partial discharge (PD) coupler for coupling electrical machinery to partial discharge analysis testing equipment, the PD coupler comprising:
- at least two cylindrically-shaped ceramic capacitors physically and electrically connected in series, the ceramic capacitors capable of withstanding high voltages;
- silicone potting material surrounding the ceramic capacitors for providing flashover protection;
- a fuse for protecting the electrical machinery, the fuse physically and electrically connected in series to the ceramic capacitors, the ceramic capacitors and the fuse capable of passing high frequency partial discharges with minimal attenuation; and
- a tubular housing surrounding the ceramic capacitors, the potting material, and the fuse.
- 9. A method for fabricating a partial discharge (PD) coupler for coupling electrical machinery to partial discharge analysis testing equipment, the method comprising:
- physically and electrically connecting at least one capacitor capable of withstanding high voltages in series with a fuse for protecting the electrical machinery, the at least one capacitor and the fuse capable of passing high frequency partial discharges with minimal attenuation; and
- surrounding the at least one capacitor with elastomeric potting material for providing flashover protection and accommodating thermal expansion changes, the potting material capable of withstanding voltages of the at least one capacitor.
- 10. The method of claim 9, wherein the step of surrounding the at least one capacitor with elastomeric potting material comprises surrounding at least one ceramic capacitor with silicone potting material.
- 11. The method of claim 9, further including, prior to surrounding the at least one capacitor with elastomeric potting material, situating the at least one capacitor and the fuse in a housing.
- 12. The method of claim 9, wherein the step of surrounding the at least one capacitor with elastomeric potting material includes surrounding the fuse with elastomeric potting material.
- 13. A method for fabricating a partial discharge (PD) coupler for coupling electrical machinery to partial discharge analysis testing equipment, the method comprising:
- physically and electrically connecting at least one capacitor capable of withstanding high voltages in series with a fuse for protecting the electrical machinery, the at least one capacitor and the fuse capable of passing high frequency partial discharges with minimal attenuation;
- applying an adhesion promoting material on the at least one capacitor, and
- surrounding the at least one capacitor and the adhesion promoting material with elastomeric potting material for providing flashover protection and accommodating thermal expansion changes, the potting material capable of withstanding voltages of the at least one capacitor.
- 14. A method for fabricating a partial discharge (PD) coupler for coupling electrical machinery to partial discharge analysis testing equipment, the method comprising:
- physically and electrically connecting at least one capacitor capable of withstanding high voltages in series with a fuse for protecting the electrical machinery, the at least one capacitor and the fuse capable of passing high frequency partial discharges with minimal attenuation;
- surrounding the at least one capacitor with elastomeric potting material for providing flashover protection and accommodating thermal expansion changes, the potting material capable of withstanding voltages of the at least one capacitor; and
- surrounding the fuse with thermoset potting material.
Parent Case Info
This application is a Continuation-in-part of Application Ser. No. 08/603,300, filed Feb. 20, 1996 now abandoned.
US Referenced Citations (15)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
603300 |
Feb 1996 |
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