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 [Stable, of course, SBC] Stage Background LED color screen prices, stable performance of the stage background color LED screen manufacturer Shenzhen SBC Pure Optical Technology Co., Ltd. is a professional Xuancheng stage background color LED screen R & D, production, sales and engineering installation and after-sales services for the integrated operating company. Our LED stage background color screen stable, three-year warranty, LED stage background color in the selection screen manufacturers worth a visit and study time. SBC LED stage background color screen and offer reliable service! We provide long-term good for our customers the stage background color LED screen prices, engineering design, construction and installation. SBC stage background color LED screen has been successfully used in 68 countries worldwide. Stage Background LED color screen 

 Stable brand: SBC 

 Shenzhen SBC Pure Optical Technology Co., Ltd. 
 Sales Line: 150 124 564 565 
 Project Manager: Xiao Xinyu 
 Weather hotline 8233 755 -33819999 ext. 
 Official Website: http://www.sbcled.cn 

 [News] stage background color LED power supply system leakage screen protector frequent reason for trip 
 1, leakage protection irrational 
 Background-color LED screen because the stage has the particularity of the installation site, such as wiring errors, line breakage, leakage protection switch box is damaged, some electrical appliances without switch boxes and other reasons, and leakage protection device itself is inevitable malfunction and refuse to move, plus there is no electricity in accordance with the actual situation on the earth leakage protection devices for layout, resulting in frequent tripping of total leakage protection. 
 In this case in addition to strengthening the management, but also from a technical point of need, according to the actual situation on the earth leakage protection devices for a reasonable arrangement. The total power into the line on the earth leakage protection devices, can be mainly used as fire hazards and prevent electrical short-circuit the total electrical protection, leakage protection cater to every small range of backup protection, it's rated residual operating current of at 200 ~ 500mA Choose between the rated residual operating time may choose 0.2 ~ 0.3s. This can greatly reduce the surge voltage, surge current, electromagnetic interference on the impact of the total leakage protection, the total leakage protection actions to improve the selectivity and reliability. If you can make within each of the secondary leakage protection leakage protection in the effective protection of the state, the site can greatly reduce the total leakage protection frequent tripping probability. 
 2, within the scope of protection does not form an effective two or three leakage protection 
 The final stage of switch box leakage protection of electrical equipment is the main protection, if not the last stage leakage protection equipment, damaged or improper selection, may lead to higher leakage protection device trips frequently. As the stage background color LED screen a lot of metal conductors, wires and connectors more, if the wire insulation is not very good, it will often lead to leakage of the situation; some also added a number of outlets, in many cases do not install leakage protection, often cause leakage. Only within the scope of protection in each of two or three to form an effective leakage protection mode, in order to effectively reduce the frequency leakage protection tripping. 
 3, leakage protection device itself has some limitations 
 (1) current leakage protection, whether electromagnetic or electronic type are used magnetic voltage transformer electrical equipment picked up the leakage current of the main circuit, three-phase or three-phase four-wire arrangement of the magnetic ring is not possible to completely balance. 
 Stage Background LED color screen three-phase power load can not be completely balanced, the high current or voltage is too high, will have a high permeability of the magnetic force in a certain sense, the large force to a certain extent, it will lead to leakage protection tripping. 
 As the rated current greater leakage protection a relatively large magnetic ring, resulting in the leakage flux is relatively large, and the leakage current to overcome the magnetic power of their magnetization, resulting in the actual use of the greater leakage protection device rated current , the lower the sensitivity, the greater the rate of tripping. 
 (2) leakage protection device at the rated residual operating current and the rated residual operating current not there is a movement between the uncertainty, leakage protection device leakage current fluctuations in this region may lead to leakage protection without the law of the trip. Stage Background LED color screen 
 4, selection of unreasonable leakage protection 
 (1) switch box using the rated residual operating current of 30mA or more than exceeded the electrical equipment more than twice the rated current leakage protection, or selected with the time delay of the leakage protection device, as rated residual operating current increase or decrease the sensitivity of protection, the occurrence of leakage failure, the last stage there is no leakage protection action, the higher leakage protection device may be action. 
 (2) LED color screen to stage the background when the starting current power is often relatively large, the large current may cause leakage protector trip. Therefore, as far as possible in batches to display box to power. In addition, the general should be used for surge over voltage, over current less sensitive to the electromagnetic leakage protection device; or use than the rated current 1.5 to 2 times the electronic earth leakage protection devices, but as the last stage leakage protection, rated residual operating current should not exceed 30mA. 
 In short, frequent tripping earth leakage protection device is the combined result of various factors, the most important is to make reasonable arrangements leakage protection, two or three narrow scope of protection of leakage protection, leakage protection and the correct choice of connection, so that each within two or three leakage protection in the effective protection of the state; the other hand is to strengthen the management of electricity and power through training to improve their own quality, to eliminate non-electrical wiring, so that you can not only improve the security of electricity, they can reduce the frequent tripping earth leakage protection devices, LED stage background color to the normal work screen to create better supply conditions. 

 http://www.sbcled.cn/ Shenzhen SBC pure Optoelectronic Technology Co., LED stage background color screen