Preface: Driven by social and economic development, my country's street lamp service facilities have been further improved, and the corresponding street lamp maintenance work has also increased. Street lights play an indispensable role in people`s daily lives. Providing basic lighting services for people on the road at night is also an important part of the basic service system of modern cities. But if you want to better play its service role, you must focus on doing Good maintenance and maintenance work, take corresponding measures based on the actual situation of the region, formulate practical and reliable maintenance plans in accordance with unified standards, improve the overall maintenance management efficiency and quality, and reduce unnecessary problems.
Existing problems and solutions:
Causes of failure and maintenance measures when street lights are off and voltage is normal
1) Street lights are naturally aging. During the long-term use of the street lamp, the electrode emission material will gradually decrease. With the prolonged use of the street lamp, it will eventually be exhausted, and this material will remain in the arc tube, and these residual impurities will continue to deflate. The starting voltage of the
street lamp will be greatly increased, making it more and more difficult to start the street lamp. If it is serious, it will not be able to start. This will bring inconvenience to people`s travel. When solving this problem, the best way is Replace with new street lights.
2) The outer glass shell of the street lamp is damaged or leaking. Street lights are mostly continuously illuminated at night, and the external environment is changeable. In case of bad weather, it will inevitably affect the normal performance of the street lights. This requires a glass shell outside the street lights. For example, a high-pressure sodium lamp, if it is damaged or leaks during use, its getter mirror will gradually become milky white, and there will be obvious oxide layers on both ends of the arc tube, which will affect the lighting effect. It is necessary to strengthen protection in daily management and replace new bulbs when necessary.
3) Street lights start slowly. Street lighting is too slow when starting, which is also a common fault. There are many reasons for this failure, such as insufficient electrode emission, insufficient output pulse amplitude, and low power supply voltage. Failures caused by different reasons have different solutions. If the electrode emission is insufficient, you need to replace the street lamp; if the output pulse amplitude is not enough, you need to replace the electronic trigger; or the power supply voltage is too low, you need to increase it appropriately Power supply voltage improves the quality of power supply.
4) The starting device is damaged. The starting device contains an auxiliary starting conductor. Once the position of this conductor changes or the heating wire inside the street lamp is burned by high temperature, the starting device inside the street lamp will be damaged, and it will not start normally, and the lighting function of the street lamp will be difficult to achieve. For this situation, the only solution is to replace the new street lights.
5) The problem of the lead wire of the street light. There are many leads inside the street light bulb, and these leads are connected by welding. If some of the leads are unsoldered or the lamp cap is loose, it will easily cause a short circuit or open circuit in the internal leads of the street light, which will make the street light difficult to normally illuminate. It must be discovered, resolved, and dealt with in time.
6) Street lights go out intermittently. Street lamp bulbs contain more sodium substances. This sodium substance is the key to the normal function of street lamp lighting. With the prolonged use of street lamps, this sodium substance will gradually decrease, so that the voltage will increase and street lamps will appear. If the situation is intermittently extinguished, it is necessary to replace a new street light bulb and ensure sufficient sodium. In addition, if the intermittent extinguishing problem is caused by the decrease of the capacitor capacity, the capacitor needs to be carefully inspected and replaced if necessary; if it is caused by the high temperature of the lighting environment, ventilation and heat dissipation must be done.
Causes and solutions of the failure when the bulb is off and the voltage is abnormal
1) Fuse. The failure of the fuse is generally caused by loose or poor contact of the porcelain insert. If the problem persists after it is secured, a new fuse device must be replaced. In addition, the overload of the street lamp power supply line will also cause the fuse to fail. This requires technicians to use professional testing equipment to inspect the power supply line and formulate a solution based on the severity. In this process, ensure that the fuse The specifications and models of the equipment meet actual needs.
2) Ballast. Under normal circumstances, the failure of the ballast is nothing more than three conditions, namely, open circuit, burn out and short circuit between turns. When the ballast device is in an open circuit state, its input terminal will have current and voltage, but the output terminal does not exist. If the winding coil has poor contact or is burned, you need to replace the new ballast device . Once the ballast equipment is burned out, its winding coil will be burnt if the temperature is too high, and there will be a strong scorching smell, and the ballast equipment must be replaced with a new one. In addition, the phenomenon of inter-turn short circuit will greatly reduce the line impedance, which will cause the voltage of the street lamp to increase, and the increase of the line current value, which reduces the service life of the street lamp, and needs to be replaced at this time.
3) Electronic trigger failure. If a
street lamp has an electronic trigger failure, the most obvious consequence is that the street lamp is burned out, and once the street lamp is burned, not only the shell will be deformed, but the output pulse will also be seriously affected. At this time, the technician must replace the equipment in time. It should be noted that if the model of the electronic trigger is inconsistent with the ballast equipment, its output pulse amplitude will be seriously lower than the actual set standard value, which will cause the street light to be difficult to start normally, and a new electronic trigger needs to be replaced.
4) The street lamp circuit is faulty. The fault of the street lamp circuit is mostly caused by the intensive connection error of the circuit. At this time, technicians are required to use professional equipment to check the circuit connection parts to ensure that the current value of the circuit connection parts is constant and meets safety standards. When the live wire and the lamp holder chip are connected, the ballast is indispensable, and the length of the circuit at the lamp holder must be moderate and not too long. In addition, once the wire insulation layer of the street lamp circuit is damaged, or its withstand voltage performance is reduced, it will also affect the starting pulse and must be replaced.
5) Compensation capacitor failure. During the use of street lamps, once the compensation capacitor fails, the most common cause is improper selection of capacitors. The type and specifications of the capacitors are inconsistent with the requirements of the street lamps, and the internal voltage of the street lamps will therefore be in an abnormal state, and the street lamps are also difficult to provide For normal lighting functions, at this time, the compensation capacitor should be replaced according to the technical standards of street lamp engineering maintenance. When replacing, ensure that the specifications and capacity of the equipment are consistent.
6) The voltage of the street lamp power supply is unstable. Unstable voltage will cause the street lamp to flicker. If the voltage of the street lamp power supply is above 240 V for a long time, the street lamp will be in an over-powered working state, which will greatly shorten the service life. If the power supply voltage fluctuates too much, it will make it difficult to start the street lamp, and it is difficult to start the lighting function in the first time. Therefore, it is necessary to strengthen the inspection of the street lamp power supply voltage to maintain the voltage stability.
to sum up:
With the acceleration of urbanization, urban infrastructure has become more and more complete, and urban functions have become more abundant. As a basic component of urban functions, street lamps are closely related to people`s travel. Strengthening street lamp management and improving the efficiency of
street lamp repair and maintenance are issues that must be paid attention to in current urban development. In view of the current problems in urban street lamp repair and maintenance work It is necessary for the city management department to combine its own reality and take corresponding countermeasures to achieve efficient management of street lights, reduce unnecessary problems, and provide basic guarantee for people's lives and work.
