Check the connection point of the battery pack, whether the contact is tight, whether it is oxidized, and coated with petroleum jelly.
High-frequency online three-in and three-out UPSEH9225 series (10-30KVA)
When the UPS power supply is inspected, it is:
a. Whether there is mechanical damage, whether there are small animal carcasses in the equipment;
b. Whether there is conductive dirt or dust inside the device;
c. Whether the accumulated dust affects the heat dissipation.
Regular maintenance of UPS power:
The voltage of the battery pack and the voltage of the single battery are measured once a month. The voltage of each battery should be 1.35-1.4V. If the voltage of the battery is found to be low or uneven, timely test the simulated power failure test. :? Consciously let the battery discharge to the DC bus. After the operation is normal, immediately send the AC power. The battery should be able to automatically cut off the discharge circuit. The operation time of the test is less than 30 minutes. Because the unit and the power generation operation are extremely important, the simulation is lost. The specific time of the electrical test is preferably scheduled for downtime and is specified once a month.
The battery check capacity is once a year, and the battery check capacity has two purposes:
a. Understand the actual operating capacity of the battery;
b. The battery pack is activated once to make the battery capacity uniform.
The mains power switching device is verified every year, and the method of disconnecting the power supply 1 and the power supply 2 from the line side is adopted to check the accuracy of the operation of the incoming line switching module, and the switching operation is ensured.
Every year, all the switching modules of the UPS are periodically inspected, and the method of disconnecting the mains one, the mains, and the bypass power from the power incoming line side is adopted. When the switching function of the switching module is verified to be accurate, the inverter is also checked. Whether the function is normal. (The operation must be carried out according to the steps. When the mains and bypass are disconnected, the output power is always pressed.)
The UPS control system should be regularly checked as follows:
a. Check whether the display module of the control is consistent with the running status, and there is no black screen and garbled. If this happens, replace the display module as soon as possible.
b. Check if the control panel has abnormal noise, and if there are alarms and other abnormal phenomena, deal with it in time.
C. Check the display control panel operation button, confirm that the functions of each button are normal, switch and check related functions and parameters, and report the processing in case of abnormality.
UPS uninterruptible power supply should avoid frequent power-on and shutdown, it is best to be on for a long time. If you really need to shut down, you should turn it on again after 5 seconds or more.
Check whether the battery pack to the UPS wire is aging. If it is aging, replace the wire with the same current-carrying area in time, and try to avoid adding unnecessary wire length.
Check whether the mains supply is always in the normal power supply. If the display is always in normal operation, the UPS uninterruptible power supply will not have a chance to work, and the battery may be damaged by floating for a long time. Therefore, it is necessary to periodically perform artificial forced work on the UPS uninterruptible power supply that is not used for a long time, so that the battery can be activated, and whether the UPS uninterruptible power supply is in a normal state can be checked.
Check whether the communication is normal, the data is accurate, and the abnormal situation is processed in time.
Check the maintenance-free battery and check the specific gravity of the solution and the amount of liquid.
Make sure that the load capacity of the patch does not exceed two-thirds of the UPS power capacity.
The operation of the energy storage battery is all in the state of floating charge. It is necessary to charge and discharge periodically, and discharge once every 2 to 3 months, at least once a year. Before the discharge, the battery pack should be balanced and charged to achieve the balance of the whole battery.
It should be thoroughly cleaned every quarter. The second is to check whether the connectors and connectors are loose or not in contact when dust is removed.
When the UPS power battery system fails, find out the reason, distinguish whether it is the load or the UPS power system; whether it is the host or the battery pack, and gradually solve the problem.
Wonke Electric CO.,Ltd. , https://www.wkdq-electric.com