5. Maintain inspection rules Maintenance and inspection of running power equipment can avoid accidents, so it is necessary. Our company recommends that users perform the following inspections Inspections are conducted annually. The rule table performs equipment maintenance. Maintenance inspections are divided into two categories: routine inspections and annual inspections.
Routine inspections can be carried out every 3-6 months, and annual inspections serial number project name Routine inspection annual inspection Input and output wiring on the я я 1 Equipment appearance surface of the rack chassis • я Signs, signs, markings are out of • я 2 AC voltage limits, phase is missing, power outage я я 3 The output voltage set value я я 4 Load current я я 5 я battery current я я я 6 Module failure 7 Module current • я 8 AC input over or under voltage • я я Protection and Alert DC output over and under • • я voltage fuse protection and alarm 6. Analysis of common faults 1. The high-frequency rectifier module does not work. Phenomenon:
The high-frequency rectifier module does not work (the indicator light does not light up and the fan does not rotate). Solution: Check whether the AC input voltage is normal, whether there is overvoltage, undervoltage, lack of phase, etc., and whether the AC input switch and contactor are closed, intact. 2. The module works normally and the system reports undervoltage. Phenomenon: The high-frequency rectifier module works normally, but the monitoring reports bus undervoltage. Solution: Check whether the output switch of the rectifier module is closed? Whether the switch fails. 3. Monitoring reports insulation faults Solution: Check whether the output switch of the rectifier module is closed?
Whether the switch fails. Phenomenon: The high-frequency rectifier module works normally, but the monitoring reports bus undervoltage. 4. Monitoring reports feeder switch failure Phenomenon: The monitoring module reports a switch failure. Solution: Check whether the output feeder switch is tripped and whether the switch detection wiring is correct. —-11--