12V27A battery

　　UPS power supply manufacturer teaches you the process of replacing large-capacity 12V27A battery in uninterruptible power supply UPS

　　UPS power supply manufacturers teach you the process of replacing large-capacity 12V27A battery in uninterruptible power supply UPS. When the mains power supply is normal, the UPS power supply charges the UPS power supply battery and provides backup power. When the mains power supply is cut off, the UPS power supply battery starts to supply power to the equipment to ensure the normal operation of the power supply system, communication system, etc. The UPS power supply battery capacity is not up to standard, which will lead to direct power outage within the scheduled time. For this reason, the UPS power supply manufacturer teaches you the process of replacing a large-capacity battery with an uninterruptible power supply UPS.

　　Uninterruptible power supply UPS replacement process for large-capacity batteries

　　1. The construction personnel bring the installation and testing tools and arrive at the computer room construction site.

　　2. Check to confirm that the sleeve handle and wrench handle are well insulated.

　　3. Plug the generator output line into the backup power industrial connector, start the generator, and let the generator run first.

　　4. Open the battery cabinet and take photos for backup. Find the output cable connected to the UPS host and confirm the positive and negative poles.

　　5. Confirm that the generator is running stably. After measuring the normal voltage at the input end of the transfer switch in the distribution cabinet, switch the switch to the generator side, observe and confirm that the UPS host is running normally, and disconnect the battery circuit breaker in the battery cabinet.

　　6. Remove the old battery. Remove the battery from top to bottom on the battery rack. Remove one screw and wrap the connecting wire connector with electrical tape to insulate it well (this step is very important, don’t be lazy) to prevent it from being damaged. The negative pole is short-circuited and dangerous.

　　7. Remove all batteries, place them in place, and start installing new batteries.

　　8. Start from 1# according to the battery number, and start installation from the bottom layer of the battery rack. The position and direction are the same as before. The connector screws must be tightened, the connecting wires are neat, and the curvature is consistent. There must be appropriate gaps between batteries, and strict precautions must be taken during the connection process. short circuit.

　　9. After installing the battery, confirm that the positive and negative poles are correct, measure the total voltage, and confirm that the battery is installed and connected correctly.

　　10. Calculate the charging voltage based on the battery parameters, and measure the UPS output charging voltage, which meets the charging requirements of this batch of batteries. Close the battery cabinet and check the host charging menu. The battery is already charging.

　　11. Install the battery cabinet, switch the input of the UPS host back to the mains power, and confirm that the input and output voltage of the UPS uninterruptible power supply host is normal. Stop the generator, disconnect the connecting wires, pack the tools, load the old battery into the truck for transportation back, and clean up the site.

　　UPS battery power time calculation

　　The battery power supply time is mainly affected by factors such as load size, battery capacity, ambient temperature, and battery discharge cut-off voltage. Generally, to calculate the UPS battery power supply time, the battery discharge current can be calculated, and then the discharge time can be found based on the battery discharge curve. The battery discharge current can be calculated according to the following empirical formula: discharge current = UPS capacity (VA) × power factor/average battery discharge voltage × efficiency. To calculate the actual load discharge time, simply replace the UPS capacity with the actual load capacity.

　　Tips for using UPS uninterruptible power supply

　　First, there are currently two main ways to extend the power supply time of UPS uninterruptible power supply systems: external large-capacity battery packs, and external battery packs of corresponding capacity can be connected according to the required power supply time. Choosing a UPS power system with a larger capacity can not only reduce maintenance costs. Once the load equipment is expanded, the larger-capacity uninterruptible power supply system can still operate immediately.

　　Second, when switching on and off the UPS uninterruptible power supply system, the relevant skills must also be clarified. When starting up the machine for the first time, the switches should be closed in the corresponding sequence. The energy storage battery switch, automatic bypass switch, and output switch are set to the "ON" state in sequence. Press the "On" button on the UPS startup panel, and the UPS power supply system will start in sequence. The "Inverter" indicator light will light up. After a one-minute delay, the "Bypass" light will go out and the UPS power supply will switch to inverter power supply to complete the startup operation.

　　Installation and use of UPS uninterruptible power supply is also a matter of knowledge. Improper operation may cause UPS uninterruptible power supply failure or even personal safety. Therefore, the installation and use should be followed according to the instructions of relevant staff; if you have any questions about the "UPS large-capacity battery replacement process" "If you are confused about the content or are interested in UPS power products, please contact the staff for details.

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