136results about How to "Improve the insulation level" patented technology

The invention discloses a distribution network integrated lightning protection system comprising a transformer substation, and output lines led out of three phases of outlet ports of a transformer substation transformer. Each phase of line is connected in series with an overvoltage isolator. Overhead wires are formed through lead-out of the output ends of the voltage isolators to a pole tower. Pole tower insulating cross arms support the overhead wires, and power transmission wires are fixed via multifunctional wire clamps arranged on the insulating cross arms. A wave-resistant lightning rod is installed at the top end of the pole tower. A simple and rapid grounding device is embedded in the ground of the bottom part of the pole tower so that integrated lightning protection performed on the distribution network lines and the transformer substation is realized with pole tower protection acting as the center and prevention of distribution network lightning tripping and disconnection acting as the key points. Distribution network line dedicated lightning equipment like the wave-resistant lightning rod, the insulating cross arms, the multifunctional wire clamps and the simple grounding device are organically integrated by the system so that the multilayer and three-dimensional integrated lightning protection system is constructed and realized, lightning trip-out rate and disconnection rate can be substantially reduced, and maximum matching of distribution network lightning economical efficiency and effectiveness is realized.

Aiming at resolve the defects that assemblage and maintenance are not convenient of traditional isolating switch device, the invention provides an isolating switch device that the operation is simple, insulation is strong, performance is more reliable, it includes shell, operating mechanism, a isolating switch and at least one grounding switch, the isolating switch includes act end screening can and spacing movable contact, static end screening can and spacing stationary contact; the grounding switch includes grounding act contact which is on lower side wall of the shell and grounding static contact which is on lower side of the act end screening can or static end screening can. It characterized in that the spacing movable contact and spacing stationary contact are arranged in level linear type, the action direction is uniform with the axial center of shell, the act end screening can and static end screening can are separately fixed to two ends of the shell via insulated basin, the operating mechanism adopts two separated drive and connection mechanism of separating and grounding to realize the non-interference of separating switch and grounding switch.