Circular video wall | LED electronic screen to guide traffic | stage background electronic display | LED screen broadcasting center | media LED large screen | LED display | Champs-media color | Building LED screen | display quote | Buy electronic screen | Spring Festival LED color screen | P12LED large monitor | traffic notices LED large screen | Song and Dance Ensemble Large LED display | LED large display projects | Large display features | | [stable, of course, SBC] SBC (SBC) is the main industry "LED outdoor full-color large screen" TV wall round the theme of the manufacturing sector, has entered the circular wall of television manufacturing. The main products are LED stage big screen, LED full-color advertising, LED brick screen, LED color screen, LED canopy screen, LED indoor and outdoor full color displays. Detailed consultation 800-888-0311 "training 
 In order to SBC causes hit a learning organization, we will SBC employees and customers with a number of training courses, including cultural training new staff, induction training and for the circular video wall customer training. 
 In order to SBC causes hit a learning organization, we will SBC employees and customers with a number of training courses, including cultural training new staff, induction training and for the circular video wall customer training. 
 To help new employees adapt to corporate culture, SBC staff training covering the new corporate culture, product knowledge, marketing skills and product development standards and other aspects. For different jobs and the nature of work, training time from one month to three months. 
 SBC will continue to improve in-service training program, which includes management and technical aspects. Different vocational qualifications, and staff categories have different levels of training programs, career development for each employee to provide effective help. 
 In addition to staff a variety of training resources to help them self-improvement, SBC aims to build capacity within two years and the accreditation system, skills and abilities of employees were identified. TV wall round 

 Stable brand: SBC 

 Shenzhen SBC Pure Optical Technology Co., Ltd. 
 Sales Line: 150 124 564 565 
 Project Manager: Xiao Xinyu 
 Weather hotline 8055 755 -33819999 ext. 
 Official Website: http://www.sbcled.cn 

 [News] round television wall power supply system leakage protection causes frequent tripping, 
 1, leakage protection irrational 
 As the circular video wall installation site has the particularity, 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 and the inevitable malfunction refuse to move, plus there is no electricity in accordance with the actual situation on the earth leakage protection 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. TV wall round 
 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 circular walls of the metal conductor lot of TV, cable joints more, if the wire insulation is not very good, it will lead to frequent leakage situation; some also added a number of outlets, in many cases do not install leakage protection, often resulting in 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. 
 TV wall round the 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 electromotive force to a certain level, 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. TV wall round 
 (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. 
 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) to the circular wall TV start-up current when 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. TV wall round 
 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, and can reduce the frequency leakage protection tripping, the normal to the circular wall of television work to create better supply conditions. TV wall round 
 http://www.sbcled.cn/ Shenzhen SBC pure Optoelectronic Technology Co., circular video wall