Qhov ntev ntawm high-voltage overhead kab yog qhov loj, thiab cov yees kuj siab. Thaum cov xov hlau raug cua muaj zog, lawv yuav muaj kev vibrations muaj zog. Thaum cov hlau vibrates, cov kev ua haujlwm ntawm cov hlau raug tshem tawm yog qhov tsis zoo tshaj plaws. Lub sij hawm ntev thiab lub sij hawm vibrations tuaj yeem ua rau qaug zog kev puas tsuaj rau cov xov hlau, ua rau cov hlua tawg thiab cov xov hlau. Qee zaum kev vibrations muaj zog tuaj yeem ua rau cov fittings thiab insulators puas.
Txhawm rau tiv thaiv thiab txo qhov kev vibration ntawm cov xov hlau, feem ntau ntawm cov khoom poob siab-absorbing hammers feem ntau ntsia ze ntawm cov hlua khi hlua khi. Thaum cov hlau vibrates, lub shock absorber kuj nce thiab nqis. Tsim ib lub zog uas yog asynchronous los yog txawm rov qab rau kev co ntawm cov hlau yuav txo tau nws amplitude thiab txawm tshem tawm nws kev co.