What preparations are required before street lamp maintenance

What preparations are required before street lamp maintenance
1 Check the electrical circuit diagram of the station before the street lamp maintenance, and find the street lamp circuit to be repaired. 1.2 Street lamps The street lamps in the station are generally divided into two types according to their heights. One is 8-meter-high street lamps that require a lifting platform, and the other is 3.5-meter-high street lamps. Bamboo ladders for climbing are required for maintenance. 1.3 The specific operation steps for the maintenance of 8-meter-high street lamps are as follows: 1.3.1 First listen to the description of the operating personnel about the failure of the street lamps, and generally make a preliminary judgment on the failure of the street lamps; 1.3.2 Come to the power distribution room, find the street lamp control switch, Turn on the street light switch to see which street lights are bad. Turn off the street light switch, turn on the street lights of each phase in turn, and determine which line the faulty street light is on; 1.3.3 After finding the faulty line and the faulty street light, come to the work site; 1.3.4 Operation of the underground part: After entering the work site, The person in charge of the site must get off the vehicle to observe the situation on the site, and then direct the operating members to divide the work, and at the same time place warning signs, delineate the scope of work, and the guardian of the operation will supervise; One must check the support of the outriggers. The support should be stable, firm, and free from subsidence, and check that the footboards of the operating platform are intact; 1.3.6 Maintenance personnel first check whether the light bulb is glowing and whether the light is normal before repairing. If it emits dazzling white light, the voltage may be too high; if it glows dimly, the voltage may be too low. At this time, use a multimeter to measure whether the cable voltage of the junction box is normal; 1.3.7 For street lights with the rectifier at the bottom, first open the junction box of the street lamp to see if the trigger is cracked, whether the rectifier has insulating medium overflowing, and whether the capacitor is cracked or burnt. If the above situation occurs, disconnect the power supply and replace the prepared trigger, rectifier or capacitor
1.3.8 If the bulb of the street lamp does not light up, check whether the down-lead of the cable and the connectors of the insurance and neutral wires are in good condition, and whether there are signs of discharge or burnt. Gently shake the wiring at all the joints below to see if there is any discharge phenomenon; 1.3.9 Use a test pen to test whether the two ends of the insurance are charged, and the electricity is normal. If there is no electricity, measure the voltage of the cable; replace the fuse, if the fuse burns at this time, it means that there is a short circuit in the front of the rectifier, and you can replace the light wire; If the power is normal, restore the wiring. If there is no electricity or low voltage is displayed by induction, it means open circuit in the middle, and the lamp line should be replaced; 1.3.11 The rectifier is 8 meters high at the lamp head of the street lamp, which needs to be operated at heights; 1.3.12 High-altitude part: the driver of the climbing vehicle operates the folding arm of the aerial work vehicle Before the on-site work, the person in charge of the on-site work must check or inquire about the condition of the driver's folding arm; check the surrounding overhead lines, structures and other high-altitude conditions; check and urge the climbers to wear safety helmets, labor protection suits, insulating gloves, fasten seat belts, and wear necessary repairs. Lamp tools and materials, the four climbing brackets of the vehicle are erected before carrying out the climbing operation; 1.3.13 After the maintenance personnel ascend the height, firstly observe whether the mirror surface of the bulb glass bulb is white, whether there is black precipitation, whether the thread at the bottom of the bulb is cracked, and look inside the lamp cap. Whether the spring is in poor contact due to loss of elastic surface, whether there is discharge phenomenon, and see if the trigger is cracked. See if the rectifier has overflow of insulating medium, whether it does not match the power of the bulb used. Check whether the capacitor is cracked or burnt 1.1 Check the electric circuit diagram of the station before maintenance, and find the street lamp circuit to be repaired. 1.2 There are generally two types of street lamps in the station according to their heights. One is 8-meter street lamps that require a lifting platform, and the other is 3.5-meter street lamps. Bamboo ladders for climbing are required for maintenance. 1.3 The specific operation steps for the maintenance of 8-meter-high street lamps are as follows: 1.3.1 The street lamp first listens to the operator's description of the street lamp not working, and generally makes a preliminary judgment on the street lamp not working; .3.2 Come to the power distribution room, find the street lamp control switch, Turn on the street light switch to see which street lights are bad. Turn off the street light switch, turn on the street lights of each phase in turn, and determine which line the faulty street light is on; 1.3.3 After finding the faulty line and the faulty street light, come to the work site; 1.3.4 Operation of the underground part: After entering the work site, The person in charge of the site must get off the vehicle to observe the situation on the site, and then direct the operating members to divide the work, and at the same time place warning signs, delineate the scope of work, and the guardian of the operation will supervise; One must check the support of the outriggers. The support should be stable, firm, and free from subsidence, and check that the footboards of the operating platform are intact; 1.3.6 Maintenance personnel first check whether the light bulb is glowing and whether the light is normal before repairing. If it emits dazzling white light, the voltage may be too high; if the light is dim, the voltage may be too low. At this time, use a multimeter to measure whether the cable voltage of the junction box is normal; 1.3.7 For street lights with the rectifier at the bottom, first open the junction box of the street lamp to see if the trigger is cracked, whether the rectifier has insulating medium overflowing, and whether the capacitor is cracked or burnt. If the above situation occurs, disconnect the power supply and replace the prepared trigger, rectifier or capacitor; 1.3.8 If the bulb does not light up, check whether the cable down-lead and insurance and neutral connectors are well connected and whether there is discharge , Scorch marks. Gently shake the wiring at all the joints below to see if there is any discharge phenomenon; 1.3.9 Use a test pen to test whether the two ends of the insurance are charged, and the electricity is normal. If there is no electricity, measure the voltage of the cable; replace the fuse, if the fuse burns at this time, it means that there is a short circuit in the front of the rectifier, and you can replace the light wire; If the power is normal, restore the wiring. If there is no electricity or low voltage is displayed by induction, it means open circuit in the middle, and the upper lamp line should be replaced; 1.3.11 The rectifier is 8 meters high at the lamp head of the street lamp, which needs to be operated at height; In front of the arm, the person in charge of on-site work must check or ask the driver about the condition of the folding arm; check the surrounding overhead lines, structures and other high-altitude conditions; check and urge the climbers to wear safety helmets, labor protection suits, insulating gloves, fasten seat belts, and wear necessary equipment. Tools and materials for repairing lamps, and the four climbing brackets of the vehicle are erected before carrying out the climbing operation; 1.3.13 After the maintenance personnel ascend the height, firstly observe whether the glass bulb mirror surface is white, whether there is black precipitation, whether the thread at the bottom of the bulb is cracked, and look at the lamp cap. Whether the inner spring is in poor contact due to loss of elastic surface, whether there is discharge phenomenon, and see if the trigger is cracked. See if the rectifier has overflow of insulating medium, whether it does not match the power of the bulb used. See if the capacitor is cracked or burnt