1. Choose the installation location reasonably

A good installation location is very important. The place where the UPS power supply is placed must have good ventilation, keep it away from water, flammable gas and corrosives, and keep the ambient temperature between 0-40℃. If disassembly and assembly are performed at low temperatures. In use, there may be condensation of water droplets. Once the ambient temperature exceeds 25 degrees, the battery life will be shortened by half for every 10 degrees increase. At present, the batteries used in UPS are generally maintenance-free sealed lead-acid batteries, and the design life is generally 5 years.

UPS power supply should not be placed on its side. Keep the air inlet and outlet unobstructed; when the load is connected to the UPS power supply, turn off the load first, connect the wires, and then turn on the load one by one. It is strictly forbidden to connect inductive loads such as electric motors and copiers. UPS, so as not to cause injury. When connecting the UPS to a special socket with an overcurrent protection device, the power socket used should be connected to the protective ground terminal; regardless of whether the input power cord is plugged into the mains socket, the UPS output may be live. To make the UPS have no output, turn off the switch first, and then cancel the mains supply.

2, the first charge has skills

After purchasing a new UPS power supply, plug the UPS into the 220V mains grid and charge it for at least 12 hours to ensure that the battery is fully charged. Otherwise, the actual available capacity of the battery will be much lower than the nominal capacity of the battery. If the UPS power supply is not used for a long time. It should be turned on for 24 hours every 2 to 3 months to allow it to be fully charged, and the UPS power supply should be in the inverter working state for 2 to 3 minutes to ensure the normal life of the battery. Once the UPS power is connected to the mains, it will start charging the battery pack. Press and hold the power button for more than 1 second to turn on the inverter to turn on the inverter.

3. UPS cannot be idle for a long time

Excessive discharge of the battery and long-term open circuit of the battery can increase the internal resistance of the battery and deteriorate the charge and discharge performance. For UPS power supplies that have not been used for a long time, before restarting, let the UPS power supply use the charging circuit in the machine to charge for 12 hours before connecting to the load. For backup UPS power supplies, it is best to keep the UPS power supply in the inverter every other month. Work in the state for 2 to 3 minutes to activate the battery. In addition, it is necessary to strictly control the charging current of the battery not to exceed the maximum allowable charging current of the battery. Because the excessive charging current will shorten the service life of the battery.

Frequently asked questions about UPS power installation

4. The startup and shutdown sequence when using UPS power supply

The correct startup and shutdown sequence should be to turn on the UPS to supply power first, and then turn on each load, so as to avoid the damage caused by the instantaneous current impact to the UPS during startup. The order when shutting down is the opposite. Each load should be turned off first. Finally shut down the UPS. When the utility power is interrupted by the UPS, you should save your data and information as soon as possible and then turn off the computer. Otherwise, using the UPS power supply for work may cause the UPS to over discharge, thereby shortening the service life of the UPS.

5. Avoid overloading using UPS

When using the UPS, it is necessary to calculate the size of the load. To avoid the load being too large or too small, too large a load will make the UPS work in an overload state for a long time and shorten the service life of the UPS; if the load is too small, The working circuit of the UPS has been working in an abnormal state for a long time, which is also harmful to the UPS. A reasonable load should be controlled between 50% and 80%. Practice has proved that the UPS output load control is the best at about 60%, and the reliability is the best. When the UPS is overloaded or the inverter fails, it will switch to bypass mode. At this time, the UPS does not have a backup function, and the power supply used by the load is directly supplied through the power system.

6. The use of AC voltage stabilizer

After using the UPS power supply, there is no need to add an AC voltage stabilizer. If it must be added, it should be added to the front stage of the UPS, that is, the mains first passes through the AC voltage stabilizer, then passes through the UPS, and then to the load.

7. Skills in battery equalization charging

Currently, valve-regulated lead-acid batteries (VRLA) used in many UPS power supplies have been called maintenance-free batteries from the beginning. This gives users a misunderstanding that they are durable and require no maintenance at all. Under this misleading, many users have basically not carried out maintenance and management since they installed the battery. When the battery in the UPS power supply encounters the following conditions, the battery should be charged with equalization: when the over-discharge causes the terminal voltage to be lower than the rated voltage of the battery. For a 12V small sealed lead-acid battery, its discharge calibration voltage is 10.5V; for a 24V battery pack, its final discharge voltage is 21V; for a 96V battery pack, its discharge calibration voltage is 85V. The battery is not charged in time after discharging; the battery has not been used for a long time. The utility power is interrupted, and the continuous floating battery discharges nearly half of the capacity of the battery.