LED full-color displays the reasons of frequent trip distribution box

by:GKGD     2020-04-26
There are some people always ask why LED full-color displays distribution box frequent trip? The following LED full color on full-color full color LED display screen manufacturer frequent trip to do a simple analysis. Hope to be able to solve your full color LED display screen trip distribution box. General distribution box LED full-color displays frequent trip has four factors: unreasonable layout of leakage protector, within the scope of protection without effective secondary or tertiary leakage protection, leakage protector itself has some limitations, Unbalanced three-phase electric power) , leakage protector selection is not reasonable, and so on. 1, the leakage protector layout is not reasonable due to the particularity of full color LED display installation site has inevitable misoperation and leakage protector itself and refused to move, plus without according to the actual amount of electricity leakage protector for decorate, caused the total leakage protector the frequent trip. full color LED display solution: this is in addition to strengthen management, also need to from a technical point of view, the protector according to the actual situation to carry on the reasonable layout. 2, within the scope of protection, there is no effective secondary or tertiary level at the end of the leakage protector for leakage protection switch box is the main protection of electrical equipment, due to the metal conductor in full color full color LED display screen, wire connection is more, if the wire insulation is not very good, often leads to the leakage situation; Some also add some socket, in many cases is the leakage protector, often cause leakage. LED display solution: only within the scope of each protection an effective mode of secondary or tertiary leakage protection, can effectively reduce the leakage protector the frequent trip. 3, the leakage protector itself has some limitations, Unbalanced three-phase electric power) The current leakage protector, either magnetic or electrical adopt induction voltage transformer to pick up the leakage current in main circuit, electrical equipment phase or three phase four wire can't arrangement in the circular equilibrium completely. LED full-color displays, also can't completely balanced three-phase electricity load, under the big electrical flow or higher over-voltage, induction in have a very high magnetic permeability of magnetic ring out certain electromotive force, the electromotive force big, will lead to leakage protector trip. 4, unreasonable selection leakage protection switch used in the rating of the leakage current action more than 30 ma or is more than rated current electrical equipment more than twice the leakage protector, or with the delay type leakage protector, due to the increase of leakage current action rating or a reduction in the protection sensitivity, the leakage fault occurs, the end leakage protector without action, the higher leakage protector can action. LED display solution: in full color LED display screen energized the starting current, often is larger, the large current may cause leakage protector trip. Therefore, we should as far as possible in batches to display on the case of electricity. In addition, generally should choose the surge overvoltage and overcurrent not too sensitive type electromagnetic leakage protector; Or choose 1 larger than the rated current. 5 ~ 2 times of electronic leakage protector, but as a final stage leakage protection, rated leakage current action should not be greater than 30 ma.
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