초록 ▼

An apparatus for sampling and analyzing the fluid in an electrical system such as a transformer, a circuit breaker, a reactance or another electrical apparatus using a dielectric fluid as an insulating substance is disclosed. The apparatus includes a device for attaching the apparatus to the electri

An apparatus for sampling and analyzing the fluid in an electrical system such as a transformer, a circuit breaker, a reactance or another electrical apparatus using a dielectric fluid as an insulating substance is disclosed. The apparatus includes a device for attaching the apparatus to the electrical system. That device includes at the same time an inlet portion and an outlet portion; a conduit through which the fluid can flow through the apparatus connecting the inlet portion in series to the outlet portion; a pump which can draw the fluid into the apparatus, through the apparatus and expel the fluid back into the electrical system; and a device for attaching a detector for breakdown products, moisture and other parameters indicative of any failure condition in the electrical apparatus.

대표청구항 ▼

An apparatus for sampling and analyzing a dielectric liquid in an interior of an electrical system for the presence, in the dielectric liquid, of a fault gas, moisture or a breakdown product, said apparatus comprising: a fluid conduit loop comprising a mechanical pump, a first end portion and a seco

An apparatus for sampling and analyzing a dielectric liquid in an interior of an electrical system for the presence, in the dielectric liquid, of a fault gas, moisture or a breakdown product, said apparatus comprising: a fluid conduit loop comprising a mechanical pump, a first end portion and a second end portion, said first and second end portions each having a mouth for liquid communication with said interior of the electrical system, said pump being connected in said fluid conduit loop intermediate said end portions for withdrawing dielectric liquid from said interior of said electrical system through one of said mouths, circulating dielectric liquid through said fluid conduit loop and discharging dielectric liquid back into said interior of the electrical system through the other of said mouths, and detection means for the detection of a fault gas, moisture or a breakdown product in dielectric liquid circulating in said fluid conduit loop, said apparatus being characterized in that said fluid conduit loop consists of a liquid phase conduit loop, said second end portion comprises a first member and a second member, said second member comprising the mouth of said second end portion, the first member of said second end portion is disposed within said first end portion in radially spaced relation therewith, said first and second end portions are configured for connecting said fluid conduit loop to a single dielectric liquid access opening of the electrical system such that, when the fluid conduit loop is connected to said liquid access opening, the mouths of said first and second end portions communicate with said interior of the electrical system, the second member of the second end portion projects beyond the mouth of the first end portion, and the mouth of the second end portion is disposed in said dielectric liquid remote from the mouth of the first end portion so as to inhibit the same portion of dielectric liquid being discharged back into the electrical system, from being recirculated through the fluid conduit loop, and said detection means comprises a member having a surface configured for isolating a fault gas, moisture or a breakdown product from the dielectric liquid, said surface being disposed so as to contact dielectric liquid circulating through said fluid conduit loop.