Full color LED display frequent trip? Check the three places quickly! - - - - - - Full color LED screen - knowledge

by:Xinyao LCD     2020-04-20
Full-color displays frequent trip is what causes? Investigate its reason, how to solve? The following help everyone under analysis. Hope to be able to solve the problem of full color LED display screen you trip. 1, the leakage protector layout is not reasonable due to the particularity of full color LED display installation site has, such as wiring error, the wiring is shot, switch cabinet leakage protector damage, part of the electrical appliances without switch box, as well as the leakage protector itself inevitably misoperation and refused to move, plus without according to the actual amount of electricity leakage protector for decorate, caused the leakage protector the frequent trip. In this case in addition to strengthen management, need from the perspective of technology, the protector according to the actual situation to carry on the reasonable layout. Into the line on the total power leakage protector, but mainly as a total to prevent electric fire hazards and electrical short circuit protection, and to do every small leakage protection range of backup protection, its rated leakage current action can choose between 200 ~ 500 ma, rated leakage action time can choose 0. 2 to 0. 三个。 In this way, can greatly reduce the surge voltage and surge current and electromagnetic interference effect on the total leakage protector, improve the selectivity and reliability of the total leakage protector action. If we can make each leakage protection within the scope of the secondary leakage protection under effective protection, can greatly reduce the site always leaked the protector the frequent trip. 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, if the level at the end of the leakage protector is not installed, damage or improper selection, could lead to higher leakage protector the frequent trip. Due to the metal conductor in LED full-color displays many, 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. 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, 1) 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. Due to the larger the rated current of the leakage protector with relatively large magnetic ring, the leakage magnetic flux is also relatively large, and the leakage current to overcome the circular magnetization force itself, lead to actual use electric leakage protector rated current, the greater the sensitivity is lower, miss rate. ( 2) Leakage protector in rated leakage action between the rated current and leakage current action not has a uncertain area, leakage protector of leakage current fluctuation in this area, may result in leakage protector irregular trip. The above is the major reason of LED display frequent trip. If your product trip often happen, fast after-sales service with your company! To create every exciting scene
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