The reason why frequent distribution of LED full color display distribution box
1, leakage protector layout is unreasonable
As the LED full color display installation site has the particularity, such as wiring error, line damage, switch box leakage protection is damaged, some electrical appliances have not been through the switch box and other reasons, and leakage protection itself is inevitable And refused to move, plus there is no electricity in accordance with the actual situation on the leakage protection device layout, resulting in frequent leakage protector frequent trip.
For this situation to develop Pu special to strengthen management, but also from the technical point of view, according to the actual situation of the leakage protection device for a reasonable layout. The total leakage protection on the incoming power supply can be mainly used as a total protection for preventing electrical fires and electrical short circuits. It also provides the backup protection for each small leakage protection range. Its rated leakage current can be in the range of 200 ~ 500mA Between the choice of rated leakage action time can choose 0.2 ~ 0.3s. In this way, can greatly reduce the surge voltage, inrush current, electromagnetic interference on the total leakage protection, improve the overall leakage protection action selectivity and reliability. If the leakage protection within the scope of the secondary leakage protection in an effective protection of the state, you can greatly reduce the site of the total leakage protector frequent trip probability.
2, within the scope of protection did not form an effective two or three leakage protection
The last type of leakage protection in the switch box is the main protection of the electrical equipment, if the final leakage protection device is not installed, damaged or improper selection, it may lead to frequent leakage protector overload. As the LED full color display a lot of metal conductors, wire connectors are more, if the wire insulation is not very good, it will lead to frequent leakage of the situation; some also added some sockets, in many cases do not install leakage protector, often Resulting in leakage. Pioneer Ktoper reminds that only in each protection within the scope of the formation of an effective two or three leakage protection mode, in order to effectively reduce the frequent leakage of leakage protector.
3, leakage protector itself has some limitations (three-phase electricity imbalance)
The current leakage protector, whether electromagnetic or electronic type are using magnetic induction voltage transformer to pick up the main circuit in the leakage current, three-phase or three-phase four-wire in the magnetic ring can not be fully balanced layout. LED full-color electronic display of the three-phase power load can not be fully balanced, in the high current or higher over-voltage, will have a high permeability magnetic ring in the induction of a certain electromotive force, the electromotive force To a certain extent, it will lead to leakage protector tripping. As the rated current of the larger leakage protection using a relatively large magnetic ring, the leakage flux is also relatively large, and the leakage current to overcome the magnetic force of the magnetic ring itself, resulting in the actual use of the leakage current rating of the larger , The lower the sensitivity, the greater the rate of rejection.
Leakage protector in the rated leakage current and the rated leakage current does not have a movement between the uncertainty of the area, leakage current leakage in the protection of this area, may lead to leakage protection circuit without tripping.
4, leakage protector selection is unreasonable
The use of the switch box within the rated leakage current exceeds 30mA or more than twice the rated current of the electrical equipment leakage protection device, or the use of a delay with the type of leakage protection, due to the rated leakage action current improvement or protection The sensitivity of the decline, the occurrence of leakage failure, the final leakage protector no action, the higher leakage protection device may be action.
Pioneer to wake up to the LED large screen power when the start current is often relatively large, this high current may make the leakage protector tripping. Therefore, as far as possible to batches to the display of the box power. In addition, the general should be used on the over-voltage, over-current is not sensitive to the electromagnetic leakage protector; or select the rated current 1.5 to 2 times larger than the electronic leakage protection, but as the final leakage protection, rated leakage action The current should not be greater than 30mA.
In short, the development of the general analysis of the leakage protector frequent tripping is the result of a combination of various factors, the most important thing is to properly arrange the leakage protector, reduce the protection of two or three types of leakage protection, three-phase electricity distribution Uniform, the correct choice of leakage protector and wiring, so that each range of two or three leakage protector in an effective state of protection; the other is to strengthen the management of electricity and through training to improve the quality of their own people to prevent non-electrical Wiring, so that you can not only improve the safety of electricity, but also can reduce the frequent leakage of the leakage protector to the LED full color display of the normal work to create a better power supply conditions.
1, leakage protector layout is unreasonable
As the LED full color display installation site has the particularity, such as wiring error, line damage, switch box leakage protection is damaged, some electrical appliances have not been through the switch box and other reasons, and leakage protection itself is inevitable And refused to move, plus there is no electricity in accordance with the actual situation on the leakage protection device layout, resulting in frequent leakage protector frequent trip.
For this situation to develop Pu special to strengthen management, but also from the technical point of view, according to the actual situation of the leakage protection device for a reasonable layout. The total leakage protection on the incoming power supply can be mainly used as a total protection for preventing electrical fires and electrical short circuits. It also provides the backup protection for each small leakage protection range. Its rated leakage current can be in the range of 200 ~ 500mA Between the choice of rated leakage action time can choose 0.2 ~ 0.3s. In this way, can greatly reduce the surge voltage, inrush current, electromagnetic interference on the total leakage protection, improve the overall leakage protection action selectivity and reliability. If the leakage protection within the scope of the secondary leakage protection in an effective protection of the state, you can greatly reduce the site of the total leakage protector frequent trip probability.
2, within the scope of protection did not form an effective two or three leakage protection
The last type of leakage protection in the switch box is the main protection of the electrical equipment, if the final leakage protection device is not installed, damaged or improper selection, it may lead to frequent leakage protector overload. As the LED full color display a lot of metal conductors, wire connectors are more, if the wire insulation is not very good, it will lead to frequent leakage of the situation; some also added some sockets, in many cases do not install leakage protector, often Resulting in leakage. Pioneer Ktoper reminds that only in each protection within the scope of the formation of an effective two or three leakage protection mode, in order to effectively reduce the frequent leakage of leakage protector.
3, leakage protector itself has some limitations (three-phase electricity imbalance)
The current leakage protector, whether electromagnetic or electronic type are using magnetic induction voltage transformer to pick up the main circuit in the leakage current, three-phase or three-phase four-wire in the magnetic ring can not be fully balanced layout. LED full-color electronic display of the three-phase power load can not be fully balanced, in the high current or higher over-voltage, will have a high permeability magnetic ring in the induction of a certain electromotive force, the electromotive force To a certain extent, it will lead to leakage protector tripping. As the rated current of the larger leakage protection using a relatively large magnetic ring, the leakage flux is also relatively large, and the leakage current to overcome the magnetic force of the magnetic ring itself, resulting in the actual use of the leakage current rating of the larger , The lower the sensitivity, the greater the rate of rejection.
Leakage protector in the rated leakage current and the rated leakage current does not have a movement between the uncertainty of the area, leakage current leakage in the protection of this area, may lead to leakage protection circuit without tripping.
4, leakage protector selection is unreasonable
The use of the switch box within the rated leakage current exceeds 30mA or more than twice the rated current of the electrical equipment leakage protection device, or the use of a delay with the type of leakage protection, due to the rated leakage action current improvement or protection The sensitivity of the decline, the occurrence of leakage failure, the final leakage protector no action, the higher leakage protection device may be action.
Pioneer to wake up to the LED large screen power when the start current is often relatively large, this high current may make the leakage protector tripping. Therefore, as far as possible to batches to the display of the box power. In addition, the general should be used on the over-voltage, over-current is not sensitive to the electromagnetic leakage protector; or select the rated current 1.5 to 2 times larger than the electronic leakage protection, but as the final leakage protection, rated leakage action The current should not be greater than 30mA.
In short, the development of the general analysis of the leakage protector frequent tripping is the result of a combination of various factors, the most important thing is to properly arrange the leakage protector, reduce the protection of two or three types of leakage protection, three-phase electricity distribution Uniform, the correct choice of leakage protector and wiring, so that each range of two or three leakage protector in an effective state of protection; the other is to strengthen the management of electricity and through training to improve the quality of their own people to prevent non-electrical Wiring, so that you can not only improve the safety of electricity, but also can reduce the frequent leakage of the leakage protector to the LED full color display of the normal work to create a better power supply conditions.