Systems, devices, and methods for drain cleaning using high voltage, high frequency AC electrical power supplied through a video push-cable are disclosed. In one embodiment, a drain cleaning system may include a cable for carrying electrical control and/or data signals as well as alternating current (AC) power at a high voltage and high frequency relative to AC mains frequencies.

Systems, devices, and methods for drain cleaning using high voltage, high frequency AC electrical power supplied through a video push-cable are disclosed. In one embodiment, a drain cleaning system may include a cable for carrying electrical control and/or data signals as well as alternating current (AC) power at a high voltage and high frequency relative to AC mains frequencies.

Systems and methods of fabricating electrodes, including thin metallic films, include depositing a first metallic layer on a substrate and passivating the deposited layer. The processes of deposition and passivation may be done sequentially. In some embodiments, a plurality of substrates may be coated with a metallic layer and further processed at a later time, including passivation and disposal of additional layers as discussed herein.

An apparatus and method for flame sensing within a turbine. A sensor assembly, an electrical assembly and a cable assembly extending therebetween. A photodiode generates an electrical signal and the electrical assembly determines a characteristic. An inner conductor electrically connects the photodiode to the electrical assembly. A first insulating layer, with mineral insulation material, surrounds the inner conductor. An inner sheath, with electrically conductive material, surrounds the first insulating layer. A second insulating layer, with mineral insulation material, surrounds the inner sheath. An outer sheath, with an electrically conductive, metal material, surrounds the second insulating layer. The cable assembly is configured for use up to about 300 degrees Celsius or greater. The portions of the cable are constructed and configured, and connected between the sensor assembly and the electrical assembly, to enclose the inner conductor such that the inner conductor is not exposed outside of confines of the cable.

An apparatus and method for flame sensing within a turbine. A sensor assembly, an electrical assembly and a cable assembly extending therebetween. A photodiode generates an electrical signal and the electrical assembly determines a characteristic. An inner conductor electrically connects the photodiode to the electrical assembly. A first insulating layer, with mineral insulation material, surrounds the inner conductor. An inner sheath, with electrically conductive material, surrounds the first insulating layer. A second insulating layer, with mineral insulation material, surrounds the inner sheath. An outer sheath, with an electrically conductive, metal material, surrounds the second insulating layer. The cable assembly is configured for use up to about 300 degrees Celsius or greater. The portions of the cable are constructed and configured, and connected between the sensor assembly and the electrical assembly, to enclose the inner conductor such that the inner conductor is not exposed outside of confines of the cable.

A feed-through element for harsh environments is provided that includes a support body with at least one access opening, in which at least one functional element is arranged in an electrically insulating fixing material. The electrically insulating fixing material contains a glass or a glass ceramic with a volume resistivity of greater than 1.010.sup.10 cm at the temperature of 350 C. The glass or a glass ceramic has a defined composition range in the system SiO.sub.2B.sub.2O.sub.3-MO.

A feed-through element for harsh environments is provided that includes a support body with at least one access opening, in which at least one functional element is arranged in an electrically insulating fixing material. The electrically insulating fixing material contains a glass or a glass ceramic with a volume resistivity of greater than 1.010.sup.10 cm at the temperature of 350 C. The glass or a glass ceramic has a defined composition range in the system SiO.sub.2B.sub.2O.sub.3-MO.

A feed-through element for harsh environments is provided that includes a support body with at least one access opening, in which at least one functional element is arranged in an electrically insulating fixing material. The electrically insulating fixing material contains a glass or a glass ceramic with a volume resistivity of greater than 1.010.sup.10 cm at the temperature of 350 C. The glass or a glass ceramic has a defined composition range in the system SiO.sub.2B.sub.2O.sub.3-MO.

A cable includes a first insulated conductor, a first dielectric tape and a second insulated conductor. The first insulated conductor is twisted with the second insulated conductor with the first dielectric tape residing between the first insulated conductor and the second insulated conductor to form a first twisted pair. The first dielectric tape has at least one strength member embedded therein. A separator may of the cable may also have at least one strength member embedded therein, and serve to separate twisted pairs from each other within the cable.

A cable includes a first insulated conductor, a first dielectric tape and a second insulated conductor. The first insulated conductor is twisted with the second insulated conductor with the first dielectric tape residing between the first insulated conductor and the second insulated conductor to form a first twisted pair. The first dielectric tape has at least one strength member embedded therein. A separator may of the cable may also have at least one strength member embedded therein, and serve to separate twisted pairs from each other within the cable.