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壓力開關(guān)的高低壓保護
不是所有的壓力開關(guān)都可以進行高低壓保護的，在此，小編今天要告訴大家什么是壓力開關(guān)的高低壓保護，并且該如何進行接線。
何謂：高低壓保護，簡單點說就是指既可以進行高壓保護，也可以進行低壓保護。當(dāng)壓力低于設(shè)定的下限值時，壓力開關(guān)便會自動斷開，起到低壓保護的作用，需接常開端；當(dāng)壓力開關(guān)高于設(shè)定的上限值時，壓力開關(guān)便會自動切斷回路，從而起到高壓保護的作用，需接常閉端。這種壓力開關(guān)與可調(diào)型壓力開關(guān)的區(qū)別在于，可調(diào)型壓力開關(guān)是當(dāng)壓力低于下限設(shè)定值時，壓力開關(guān)會重新恢復(fù)工作狀態(tài)，當(dāng)達(dá)到壓力上限值時，則會自動斷開回路，系統(tǒng)停止運行。
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