, Leakage leads to unreasonable trips.
Due to the particularity of the LED electronic display installation site, there are many reasons such as our common wiring errors, line damage, damage to the leakage protector of the switch box, and electrical appliances not passing through the switch box. These are unavoidable misoperations and refusal to operate, and the leakage protector is not protected according to the electricity consumption, so the total leakage protector frequently trips.
2. There is no secondary or tertiary leakage protection within the protection range of the large LED screen
Many people may not know that the last-stage leakage protector in the switch box is the main protection of electrical equipment. If the last-stage leakage protector is not installed, or the type is improperly selected, or it is damaged due to careless use after installation, All may cause frequent trips. Since there are many metal conductors in the full-color display screen, and there are many wire joints, if the wire insulation is not good, it will cause frequent leakage of electricity. Some LED display manufacturers have also added sockets, in order to form an effective secondary or tertiary leakage protection mode in each protection range, so as to effectively reduce the frequent tripping of the leakage protector.
Third, the leakage protector itself has certain limitations
The current leakage protector, whether electromagnetic or electronic, uses a magnetic induction voltage transformer to pick up the leakage current in the main circuit of the electrical equipment. It is impossible to arrange three-phase or three-phase four-wire in the magnetic ring to be completely balanced. The three-phase electrical load of the LED electronic display is even more unlikely to be fully balanced. Under high current and high voltage, a certain electromotive force will be induced in the magnetic ring with high permeability. If the electromotive force exceeds a certain level, it will cause the leakage protector. Trips frequently.
In fact, the leakage protector of the LED display screen has an uncertain area between the rated leakage current and the rated leakage non-operation current. When the leakage current of the leakage protector fluctuates in this area, it is likely to cause the leakage protector to be irregular. Tripped.
Nowadays, LED display screens are still widely used in our daily life, and many enterprises and government departments will use them. Many small facades are often used to promote products. But even so, for the safety of our production and operation, the LED display must have a troubleshooting method before it is used.
