DS5 40.5kV 72.5kV 126kV High voltage disconnect switch

Nkàm:

Siri DS5 nke disconnector na-enwe akụkọ double-column horizontal V-type rotation structure, ebe ọ bụghị ihe dị ka three unipolar and operating mechanism. Ọtụtụ mgbe ahụ site na ọkachamara, ọkachamara insulator, ma ọ bụ conducting part. Rotating pillar insulator dị na azụzọ mgbe ahụ, ma contact arm and contact arm of the main electrical part na-ekwupụta na isi pillar insulator.

Operating mechanism na-ekwuokwu otu ụlọ pillar insulator ịbụ, ma na-ekwuokwu isi pillar insulator ịdị 90° maka cross connecting rod, mana conductive knife ga-eru n'akụkọ horizontal plane ịbụrụ disconnector opening and closing. Nke a na-eweta horizontal insulation fracture.

Nke Oké:

•  Conductive arm na-enwe rectangular aluminum alloy tube or aluminum alloy plate, high strength, light weight, large heat dissipation area, good anti-corrosion performance;

• Contact part of the conductive arm na-enye external pressure plate spring structure. Plate spring na-enwe alloy material with good elasticity, e nwere ike ịkọwa contact pressure stable for a long time and overcome the drawbacks of the spring internal pull structure.

Technical parameter:

Gini bụ nke oké nke disconnector?

Na enweghị mgbalị nke isolator switch. Ụfọdụ mgbe na-enyere maintenance or inspection on electrical equipment, isolator switch na-ekwupụta ịbụrụ clear break point between the equipment and the power supply. Insulation distance at this break point must meet relevant standards to ensure that no voltage from the power side is applied to the equipment side, thus ensuring the safety of the operators and the equipment. For example, when inspecting a transformer in a substation, the isolator switch connected to the transformer is first opened to isolate the transformer from the grid, before proceeding with subsequent maintenance work.

Auxiliary Function in Switching Operations：

In switching operations in substations and other electrical systems, isolator switches are used in conjunction with circuit breakers and other switching devices. Although isolator switches cannot interrupt normal load currents or short-circuit currents, they can be used to change the connection configuration of the circuit after the circuit breaker has already interrupted the circuit. For instance, they can be used to switch a line from one busbar to another. However, these operations must be performed strictly according to the operating procedures, as incorrect operation sequences can lead to serious electrical accidents.

Opening and Closing Small Current Circuits；

Isolator switches can be used to open and close small current circuits, such as the no-load currents of voltage transformers and surge arresters, and capacitive currents. However, they cannot be used to open and close normal load currents or short-circuit currents because they lack arc-quenching devices (or have very weak arc-quenching capabilities). Attempting to open or close large currents can result in intense arcs, damaging the isolator switch and potentially causing electrical fires or other accidents.