Does the UPS battery need to be checked regularly?

With the extension of the use time of UPS, there will always be some batteries whose charging and discharging characteristics will gradually deteriorate, and the internal resistance will increase and the terminal voltage will drop significantly, which needs to be found and replaced in time, otherwise it will affect the use of the whole group of batteries. This kind of battery performance problem can no longer rely on the charging circuit inside the UPS to solve, if you continue to use it will have hidden dangers, maintenance personnel need to regularly measure and check the voltage and internal resistance of each single battery, and find that the performance value is out of the range of the battery to be replaced in time.

If you want to use it for a longer period of time, you need to check it, because it only works best in specific situations, and you can check against the following points.

The usage environment of the UPS.

UPS should be installed in a clean, cool, ventilated and dry place as much as possible, which can reduce the corrosion of harmful dust on the internal circuit of UPS; Also protect from sunlight, heaters (such as those used in winter), or other radiant heat sources. The UPS should be placed upright and not tilted at an angle.

Ambient temperature The ambient temperature has a greater impact on the UPS battery, the ambient temperature is too high, the battery will be overcharged and gas, and the ambient temperature is too low, which will make the battery undercharged, which will affect the service life of the battery. An ambient temperature of around 25 is ideal, which is also very suitable for computer hosts and monitors.

Charge/discharge current.

The charging and discharging current of UPS battery is generally expressed in C, and the actual value of C is related to the battery capacity. For example, if it is a 100Ah battery, then C 100A. Too much or too little charging current will affect the life of the battery.

The discharge current is generally required, and the UPS can meet this requirement in normal use, but it is also necessary to prevent the occurrence of unexpected situations, such as battery short circuits.

Charging voltage Since the UPS battery belongs to the standby working mode, the mains power is normally in the charging state, and it will only be discharged when the power is off. If the charging voltage is too high, the battery will be overcharged, and vice versa, the battery will be undercharged.

Depth of discharge The depth of discharge also has a great impact on the service life of the UPS battery, the deeper the depth of discharge of the battery, the fewer times it will be cycled, so deep discharge should be avoided when in use. Although the UPS has a battery low-potential protection function, generally when a single battery is discharged to the left and right, the UPS will automatically shut down. However, if the UPS is in a light load discharge (that is, the UPS is in the open state when the load capacity is much less than its maximum output load capacity in the case of no mains input) or the empty load discharge (that is, the UPS is in the open state without any load in the absence of mains input), it will also cause deep discharge of the battery.

I do ups.

Generally for banks.

**Inspections will be carried out only when waiting for others!!

1.Visual inspection.

If the battery is obviously swollen and leaking, the battery is generally damaged.

2.A multimeter measures the voltage of a single cell.

The critical discharge voltage of a 12V battery is 10V, and the critical discharge voltage of a 2V battery is generally damaged if it is much lower than this critical voltage. However, it is not absolute, and sometimes it can be reactivated.

There is also a situation where the battery voltage measurement is normal, generally 12V. However, it is not possible to carry the load, and the load voltage will immediately drop below the critical value, which also needs to be paid attention to.

UPS uninterruptible power supply, how to judge UPS battery failure, mainly lies in multi-analysis. Check carefully, take an example: when there is mains, the UPS output is normal, and when there is no mains, the buzzer beeps for a long time, and there is no output.

Fault analysis: Judging from the phenomenon, it is a partial fault of the battery and inverter, which can be checked according to the following procedures:

Check the battery voltage to see if the battery is undercharged, if the battery is undercharged, it is necessary to check whether the battery itself is faulty or the charging circuit fault.

If the battery working voltage is normal, check whether the inverter drive circuit is working normally, if the output of the drive circuit is normal, it means that the inverter is damaged.

If the inverter drive circuit is not working properly, check whether the waveform generation circuit has PWM control signal output, if there is a control signal output, it means that the fault is in the inverter drive circuit.

If the waveform generation circuit does not have PWM control signal output, check whether its output is blocked due to the operation of the protection circuit, and if so, find out the protection reason;

If the protection circuit is not working and the working voltage is normal, and the waveform generating circuit has no PWM waveform output, it means that the waveform generating circuit is damaged.

The above troubleshooting sequence can also be reversed, and faults can sometimes be found more quickly.

To judge the failure of the UPS battery, 1. You can start from the visual inspection of the battery, and use visual inspection to check whether the appearance of the battery has leakage, deformation, cracks, stains, corrosion of the pole and connecting strip, and whether the nut is loose.

2. You can buy a battery testing instrument and test it to know whether the battery is faulty.

Hope it helps.

Discharge the battery, take a fake load, or directly bring the load, turn off the mains, and see how long the battery can last.

The single-cell battery test should be tested with an instrument to measure the voltage while discharging.

Start by checking the relevant environmental requirements.

1. The ambient temperature of UPS operation is 10 35, and the ambient temperature of the battery is 20 5.

2. The minimum relative humidity of the environment ranges from 20% to 80% (no condensation) 3. The input and output terminals of the insulation resistance UPS are to the ground, and a 500V DC voltage is applied, and the insulation resistance should be greater than 2m.

4. The leakage current of the UPS chassis to the ground should not be greater than.

Second, check the basics.

1. Whether the capacitor of the main circuit has no leakage, roof and expansion, etc., 2. Whether the transformer coil and choke ring have overheating, discoloration and delamination and other phenomena, 3. Whether the cable has the outer skin, no cracks, damage, etc., and the fastened connection ends are firmly connected4. Whether the printed circuit board is clean, and the contact of the connectors on the board is firm and reliable5. The fuse is installed firmly, and the contact between the switch and the contactor is not burned, and then the circuit inspection is carried out.

1. Whether the voltage of each battery is up to standard and equal;

2. Whether the output current of the battery is correct;

3. Whether the power-off shear is normal;

4. If there is no discharge for a long time, it is necessary to disconnect the mains discharge once, about once every 3 months;

5. Check whether the load is more than 60%, it is recommended to be below 60%.

UPS uninterruptible power supply battery maintenance and maintenance.

Accumulator is. ups

An important part of the system, so we should usually use and maintain it correctly, so that it can be extended.

Longer service life, vice versa, significantly shorter service life.

Battery mounting. Batteries should be installed in a clean, cool, ventilated, dry place as much as possible, and should be protected from sunlight, heaters, or other radiations.

Effect of heat injection source. The battery should be placed upright, not tilted at an angle. The terminal connection between each battery should be firm.

Ambient temperature. The ambient temperature has a greater impact on the battery.

If the ambient temperature is too high, the battery will be overcharged and gas.

If the ambient temperature is too low, it will.

Undercharging the battery will affect the life of the battery. Therefore, it is generally required that the ambient temperature is in.

25 or so (battery.)

Optimal operating temperature).

Charging current. The battery charging current is generally based on the battery capacity.

c, for example, the present.

The capacity of the battery used by the UPS.

c=220ah, the optimal charging current of nickel-cadmium battery is.

then is. The UPS charging current is set to.

Charging voltage. Because.

The UPS battery is a standby mode of operation, and the mains power is normally in a charging state, and it will only be discharged when the power is out.

For. Extend the life of the battery, UPS

The charger is controlled by constant voltage current limiting, and the battery will be converted to a floating charge state after it is fully charged, and the floating charge voltage of each battery is set to.

The set. UPS altogether.

batteries, so the total float voltage is.

424v.Discharge voltage. The set.

UPS full load discharge backup time.

Minute. ups

There is a battery low voltage warning point (333V) set inside

Battery cut-off. Stop voltage.

318v), ie.

After the UPS is switched to battery power supply due to abnormal external mains power supply in the main circuit, the battery is discharged to the set battery low power.

pressure warning point, UPS

The operation panel will indicate that the battery is about to be discharged, and the buzzer will also sound an alarm before discharging to.

The battery cut-off voltage, if the external mains power still does not return to normal, UPS

will automatically switch to static bypass power supply (bypass electricity.

source normal); If the bypass power supply is also abnormal, UPS

The power will be shut down and the power supply will be stopped.

Regular maintenance. Exterior patrol. As.

Whether the battery is bulging, deformed, leaking or even rupturing can be judged from the appearance.

If the above situation is found, the battery should be replaced immediately.

Terminal block inspection.

Check whether the connections are loose, corroded and so on.

Yes, to give you a**:

UPS & Battery Maintenance Manual - Douding.com.

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