What LED display frequent tripping why, in the face of the display trip how to do?
First, the layout of the leakage protection caused by unreasonable tripping.
Full color LED display installation site has the particularity, such as wiring errors, damaged lines, switchgear leakage protector damage, part of the electrical appliances did not go through the switch box and other reasons, as well as leakage protection itself inevitable malfunction And refuse to move, plus not in accordance with the actual situation of electricity leakage protective device for the layout, resulting in frequent leakage protector frequent trips.
Second, the LED display in the protection of the region did not form an effective secondary or tertiary leakage protection.
The last stage leakage protection in the switch box is the main protection of the electric equipment. If the last stage leakage protection is not installed, damaged or improperly selected, the upper stage leakage protection may frequently trip. As the full-color LED display a lot of metal conductors, wire connectors more, if the wire insulation is not very good, it will lead to frequent leakage of electricity; some also added some outlets, in many cases do not install leakage protector, often Cause leakage. Only in each protection within the formation of an effective secondary or tertiary leakage protection mode, in order to effectively reduce the leakage protector frequent tripping.
Third, LED display leakage protector itself has some limitations.
The current leakage protector, whether electromagnetic or electronic type, adopts a magnetic induction voltage transformer to pick up the leakage current in the main circuit of the electric equipment, and the three-phase or three-phase four-wire can not be completely balanced in the magnetic ring. Full-color LED display of three-phase power load can not be completely balanced, under high current or high over-voltage, will have a high magnetic permeability induces a certain electromotive force, the electromotive force is large To some extent, it will lead to leakage protection tripping. As the larger the rated current leakage protector using a relatively large magnetic ring, the resulting leakage flux is relatively large, and the leakage current to overcome the magnetic ring itself magnetization, resulting in the actual use of the leakage current protection device, the greater the rated current , The lower the sensitivity, the greater the rejection rate.
Fourth, full-color LED display leakage protector in the rated leakage current and rated leakage current does not have a period of action between the uncertainty of the area, leakage protection leakage current fluctuations in this area may lead to leakage protector Regular trip.
LED display in the economic life of the application is very wide, many companies and government departments and public institutions will be used. In order to production and business safety, LED display application unit should also have the necessary LED display failure solution.
