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          電氣成套設備越級跳閘的主要情況如何?

          發布時間:2022-04-25 來源:http://www.8477k.com/ 瀏覽量:

            電氣成套設備的使用避免不了問題的出現,提前做好預防工作有利于減少問題的出現,我們需要知道有哪些故障問題會出現,比如電氣成套設備越級跳閘的主要情況如何?
            The use of electrical complete equipment can not avoid the emergence of problems, do a good job of prevention in advance to reduce the emergence of problems, we need to know what fault problems will appear, such as the main situation of electrical complete equipment trip?
            主開關負載容量小于分開關負載總和的容量;主開關有漏電保護裝置然而分開關沒有,當用電器漏電大于等于30毫安時主開關跳閘;兩級電氣成套設備保護不匹配,盡量使用同品牌的電氣成套設備;經常帶負荷操作主開關導致觸電碳化接觸不良后電阻增大電流升高發熱跳閘;下級電氣成套設備配置的保護無法正確判斷故障;電氣成套設備老化導致分勵脫扣時間變長,要更換一個分勵脫扣時間小于上一級開關的分開關。
            The load capacity of the main switch is less than the total load capacity of the separate switches. The main switch has leakage protection device but not separated off, when the use of electrical leakage is greater than or equal to 30 ma when the main switch trip; Two levels of complete electrical equipment protection does not match, try to use the same brand of complete electrical equipment; Often with load operation of the main switch lead to electric carbonization contact poor resistance increases current increases heat trip; Failure can not be correctly judged by the protection of subordinate complete electrical equipment configuration; The aging of the complete electrical equipment causes the shunt trip time to be longer. Replace a shunt trip whose time is shorter than the split switch of the previous level.
            如發生上級電氣成套設備越級跳閘,若查明有分路保護動作,但該分路電氣成套設備未跳閘,則分斷該級電氣成套設備,然后恢復上級電氣成套設備;若查明各分路保護均未動作,則應檢查停電范圍內設備有無故障,若無故障可合上上級電氣成套設備,并逐一試送各分路電氣成套設備。當送到某一分路時電源電氣成套設備又再跳閘,則可判明該電氣成套設備為故障電氣成套設備,可對該線路進行隔離維修更換。
            In case of grade-exceeding trip of superior complete electrical equipment, if it is found that there is shunt protection action, but the shunt complete electrical equipment does not trip, the electrical complete set of the same level shall be cut off, and then the superior complete electrical equipment shall be restored; If it is found that none of the shunt protection works, it should be checked that there is no fault within the scope of power failure. If there is no fault, the superior electrical complete set of equipment can be closed and each shunt complete set of electrical equipment can be tried one by one. When the power electrical complete set of equipment is sent to a branch and then trips again, it can be determined that the electrical complete set of equipment is faulty electrical complete set of equipment, and the line can be isolated, repaired and replaced.
            電氣成套設備要跳閘須符合兩個條件,一是故障電流大小達到設定值,二是故障電流持續時間達到設定的時間長度,所以要確保電氣成套設備不越級跳閘須在電流設定值和時間設定值上配合好。要確保不越級跳閘須用繼保設備測試電氣成套設備的實際動作時間總長,用實際試驗結果的時間長度來確保配合的正確。
            Tripping of complete electrical equipment must meet two conditions, one is the fault current reaches the set value, the other is the fault current duration reaches the set time length, so to ensure that the complete electrical equipment does not skip the trip, it must cooperate well in the current set value and time set value. To ensure that there is no leap-step trip, it is necessary to test the total actual operation time of complete electrical equipment with follow-up equipment, and ensure the correct coordination with the time length of actual test results.
            電氣成套設備越級跳閘的主要情況如何?以上便是問題的相關解答了,如果您對此有疑問的話可以通過網站www.8477k.com聯系到我們,專業人員在線為您解惑!
            What is the main situation of grade-jumping trip of complete electrical equipment? The above is the relevant answer to the question, if you have any questions about this, you can contact us through the website www.8477k.com, professional online for you to solve the doubts!
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