An electrical energy transmission device for the transmission of electrical energy has a fluid-holding chamber. An electrically insulating fluid is contained in the fluid-holding chamber. The electrically insulating fluid is, at least in part, air-drawn from the surroundings of the electrical energy transmission device. The insulating fluid is used for insulating phase conductors in order to avoid short circuit conditions.

A camera is usable to observe a switched position of a switch contact of a switchgear apparatus. In an embodiment, the camera includes a light source to illuminate the switch contact, an image sensor, and a lens to focus light beams emanating from the switch contact onto the image sensor. In an embodiment, the camera additionally includes an elastic light protection cap to seal off a beam path, from the lens to the image sensor, from the light source in a lightproof manner.

Provided is a lubricant for a gas insulated switchgear, with which properties of a base oil such as heat resistance, evaporation loss, fluidity under a low temperature, and chemical stability (oxidation resistance and HF resistance) are balanced at a level higher than the conventional level, and long service life and high reliability of the gas insulated switchgear are achieved. A lubricant for a gas insulated switchgear according to the present invention, contains: a base oil containing a polyalphaolefin having a kinematic viscosity at 40° C. of 50 mm.sup.2/s or more; and a thickener containing bisamides.

Provided is a lubricant for a gas insulated switchgear, with which properties of a base oil such as heat resistance, evaporation loss, fluidity under a low temperature, and chemical stability (oxidation resistance and HF resistance) are balanced at a level higher than the conventional level, and long service life and high reliability of the gas insulated switchgear are achieved. A lubricant for a gas insulated switchgear according to the present invention, contains: a base oil containing a polyalphaolefin having a kinematic viscosity at 40° C. of 50 mm.sup.2/s or more; and a thickener containing bisamides.

The present invention relates to an electrical apparatus having an insulating space which contains a dielectric insulation fluid comprising an organofluorine compound. At least one solid component of the apparatus that is directly exposed to the insulation fluid contains a basic body made of a first material and a protective layer made of a second material different from the first material, the protective layer being directly or indirectly applied on the basic body and having a thickness of at least 50 μm. The organofluorine compound is selected from the group consisting of: fluoroethers, fluoroketones, fluoroolefins, fluoronitriles, and mixtures thereof, and the first material comprises or consists of a material selected from the group consisting of: a polymeric material, a ceramic, a composite material, and mixtures or combinations thereof.

The present invention relates to an electrical apparatus having an insulating space which contains a dielectric insulation fluid comprising an organofluorine compound. At least one solid component of the apparatus that is directly exposed to the insulation fluid contains a basic body made of a first material and a protective layer made of a second material different from the first material, the protective layer being directly or indirectly applied on the basic body and having a thickness of at least 50 μm. The organofluorine compound is selected from the group consisting of: fluoroethers, fluoroketones, fluoroolefins, fluoronitriles, and mixtures thereof, and the first material comprises or consists of a material selected from the group consisting of: a polymeric material, a ceramic, a composite material, and mixtures or combinations thereof.

Disclosed is a gas insulated substation cabinet for precise air supply control, comprising: cabinet doors arranged at one side of a cabinet body, a sealing mechanism arranged between a frame of the cabinet doors and a frame of the cabinet body, a supporting mechanism arranged in the cabinet body, a plurality of guiding mechanisms fixedly connected with the cabinet body inside along a vertical direction at equal intervals, electronic components respectively arranged in the guiding mechanisms, an air inlet device including a communicated pipeline, an air inlet mechanism on a top of communicated pipeline, an external air conditioner, and a filter mechanism at a bottom of the communicated pipeline, an air collecting device arranged at a bottom of an inner cavity of the cabinet and two air outlet devices respectively arranged on both sides of a bottom of the cabinet body.

Disclosed is a gas insulated substation cabinet for precise air supply control, comprising: cabinet doors arranged at one side of a cabinet body, a sealing mechanism arranged between a frame of the cabinet doors and a frame of the cabinet body, a supporting mechanism arranged in the cabinet body, a plurality of guiding mechanisms fixedly connected with the cabinet body inside along a vertical direction at equal intervals, electronic components respectively arranged in the guiding mechanisms, an air inlet device including a communicated pipeline, an air inlet mechanism on a top of communicated pipeline, an external air conditioner, and a filter mechanism at a bottom of the communicated pipeline, an air collecting device arranged at a bottom of an inner cavity of the cabinet and two air outlet devices respectively arranged on both sides of a bottom of the cabinet body.

An electrical energy transmission device for the transmission of electrical energy has a fluid-holding chamber. An electrically insulating fluid is contained in the fluid-holding chamber. The electrically insulating fluid is, at least in part, air-drawn from the surroundings of the electrical energy transmission device. The insulating fluid is used for insulating phase conductors in order to avoid short circuit conditions.

A camera is usable to observe a switched position of a switch contact of a switchgear apparatus. In an embodiment, the camera includes a light source to illuminate the switch contact, an image sensor, and a lens to focus light beams emanating from the switch contact onto the image sensor. In an embodiment, the camera additionally includes an elastic light protection cap to seal off a beam path, from the lens to the image sensor, from the light source in a lightproof manner.