126kV-252kV Insulated crank arm 126kV-252kV Isoladong crank arm

Ang 126kV -252kV na insulate switch arm usa ka importante nga komponente sa high-voltage electrical equipment sama sa gas insulated metal enclosed switchgear (GIS), gamiton pangunahan aron matransmit ang mechanical force ug maabot ang insulation function. Ania ang pipila ka pagpahayag mahitungod nian:
structural characteristics
Material: Kasagaran gamiton ang high strength insulation materials sama sa epoxy resin glass fiber composite materials, nga may maayo nga insulation performance ug mechanical strength. Ang pipila ka insulated toggle arms usab gihimo sa metal materials sama sa aluminum alloy, ug gamiton kasama sa insulated components, sama sa 7A04-T6 aluminum alloy toggle arm, nga lightweight ug easy to install.
Connection method: Kasagaran gigamit ang pin shafts, splines, ug uban pang methods aron iconnect ang insulated crank arm sa mga komponente sama sa insulated pull rods ug transmission shafts. Sa 252kV sealed vacuum circuit breaker, ang bottom end sa insulation rod iconnect sa inner crank arm pinaagi sa rod joint, ug ang inner crank arm iconnect sa outer crank arm. Ang inner ug outer crank arms iconnect sa transmission housing sa mechanism box pinaagi sa transmission shaft, ug ang outer crank arm usab iconnect sa circuit breaker mechanism pinaagi sa pin shaft ug main rod.
working principle
Sa GIS isolation switches, ang movable contacts, clamps, ug connecting arms iconnect isip usa aron makabuo og movable part sa sulod sa isolation switch. Kapag ang mechanism moghatag og closing operation command, ang connecting mechanism sa mechanism magdrive sa shaft seal ug insulation rod para mohugno, aron mapadli ang crank arm. Ang crank arm magpush sa fork ug moving contact para mobati sa static conductor, aron makompleto ang closing operation. Kapag ang switch gibukas, ang mechanism magdrive sa shaft seal ug insulation rod pinaagi sa opposite direction, ug ang connecting arm usab moghugno pinaagi sa opposite direction, magpull sa fork ug moving contact balik aron makamplete ang switch.
Performance Requirements
Insulation performance: Kinahanglan na ma-fulfill ang insulation requirements sa voltage level sa 126kV -252kV, ug makapakighubad sa corresponding power frequency withstand voltage, lightning impulse withstand voltage, ug uban pang tests aron masiguro nga wala'y insulation breakdown, flashover, ug uban pang phenomena sa high voltage environments.
Mechanical performance: Kinahanglan na adunay sufficient nga mechanical strength ug stiffness aron makapakighubad sa mechanical stresses nga gimugna sa operasyon sa switchgear, sama sa tension, compression, bending, ug uban pa. Sa parehas nga oras, kinahanglan usab nga adunay good fatigue resistance ug makapabilin stable ang mechanical performance sa long-term ug frequent operation.
effect
Transmitting mechanical force: Transmitting the mechanical motion of the operating mechanism to the moving contacts of the switchgear, achieving the opening and closing operation of the switch, and ensuring the normal operation of the switchgear.
Insulation isolation: As an insulating component, the insulation crank arm can ensure electrical insulation between components with different potentials while transmitting mechanical force, preventing electrical short circuits and other faults, and ensuring the safety of equipment and personnel.

Note: Customization with drawings is available