1. Reasonable selection of installation position

A good installation position is very important. The place where UPS is placed must have good ventilation effect, away from water, combustible gas and corrosive agent, and the ambient temperature should be kept between 0 ~ 40 ℃. If the UPS is disassembled and used at low temperature, there may be water droplets condensation. Once the ambient temperature exceeds 25 degrees, the battery life will be shortened by half for every 10 degrees increase. At present, the storage batteries used in ups are generally maintenance free sealed lead-acid batteries, and the design life is generally 5 years.
The UPS power supply should not be placed on the side, and the air inlet and outlet holes should be kept unobstructed. When the load is connected with the UPS power supply, the load must be turned off first, then the wiring is connected, and then the load is opened one by one. It is strictly forbidden to connect the electric load, copier and other inductive loads into the ups to avoid injury. When the UPS is connected to a special socket with over-current protection device, the power socket used should be connected to the protective grounding end; whether the input power line is inserted into the utility socket or not, the ups output may be charged. In order to make UPS without output, it is necessary to turn off the switch first, and then cancel the power supply.


2. Skills of first charging

After the new UPS power supply is purchased, the ups should be inserted into the 220 V municipal power grid for at least 12 hours to ensure that the battery is fully charged. Otherwise, the actual usable capacity of the battery will be much lower than the nominal capacity of the battery. If UPS is not used for a long time. The ups should be started for 24 hours every 2-3 months to make it fully charged, and the UPS power supply should be kept in the inverter working state for 2-3 minutes to ensure the normal life of the battery. Once the UPS power supply is connected to the mains power supply, it starts to charge the battery pack. Press the power on key for more than 1 second to start the inverter.


3. UPS should not be idle for a long time

The excessive discharge and long-term open circuit idle of the battery can increase the internal resistance of the battery and deteriorate the charging and discharging performance. For long-term idle UPS power supply, before restarting, make the UPS power supply use the charging circuit in the machine to charge for 12 hours, and then connect the load. For the backup UPS power supply, it is better to keep the UPS power in the inverter state for 2-3 minutes every other month to activate the storage battery. In addition, it is also necessary to strictly control the charging current of the battery to not exceed the maximum allowable charging current of the battery. Because excessive charging current will shorten the service life of the battery.


4. Startup and shutdown sequence when using UPS

The correct startup and shutdown sequence should be to turn on the ups to supply power to it, and then turn on each load, so as to avoid the damage to UPS caused by the instantaneous current impact when starting. The sequence of power-off is just the opposite. Each load should be shut down first and then the ups should be turned off. When the power supply is interrupted by UPS, you should save your own data and data as soon as possible, and then turn off the computer. Otherwise, the use of UPS power supply may cause excessive discharge of UPS, thus shortening the service life of ups.


5. Avoid overload

When using UPS, the size of the load should be calculated to avoid the load being too large or too small. Too large load will make ups work in overload state for a long time, so as to shorten the service life of ups. If the load is too small, the working circuit of ups will work in abnormal state for a long time, which is also harmful to UPS. Reasonable load should be controlled between 50% and 80%. Practice has proved that the best output load control of UPS is about 60%, and the reliability is the best. In case of overload or inverter failure, ups will switch to bypass mode. At this time, UPS has no backup function, and the power supply for load is directly supplied by power system.


HP9335C Plus 10-30KVA High Frequency Intelligent UPS

1.True double-conversion
2.DSP technology guarantees high performance
3.Output power factor 0.9
4.Wide input voltage range (110-300 VAC)
5.Active power factor correction in all phases
6.50Hz/60Hz frequency converter mode
7.ECO mode operation for energy saving
8.Accepts dual-mains inputs
9.Emergency power off function (EPO)
10.Generator compatible
11.SNMP+USB+RS-232 multiple communications
12.3-stage extendable charging design for optimized battery performance
13.Adjustable battery numbers
14.Maintenance bypass available
15.Optional N+X parallel redundancy
16.Optional isolation transformer offers full isolation and complete common mode noise rejection

Learn More

HP9335C Plus 10-30KVA High Frequency Intelligent UPS