What are the test maintenance methods for traditional UPS batteries?

　　Author ：Iflowpower – Fournisseur de centrales électriques portables

Traditional UPS battery test maintenance means generally UPS power supply requirements: satisfying a certain end voltage; the battery should have the characteristics of the large current in the start of the discharge, satisfying a certain amount of capacity to ensure the time of the inverter power supply. 1. Measure the end voltage of the battery with a multimeter, and the practice proves that measure the floating end voltage of the UPS battery is not determined whether the old battery has failed.

Because the battery is in the case of the market, the main electricity is floated by the rectifier module, and the end voltage of the battery is higher than 12V (in the 12V battery), so it is generally disconnected by the battery. Measuring the end voltage of the battery, the lowest cannot be less than 10.5V.

The battery is less than 10.5V is an undervoltage or failure. If this battery is still less than 12V in the back-end voltage of the charging or activated charging, it is a failure battery.

2. Test if the UPS battery has the characteristics of the start-up instantaneous output, the UPS power supply in the communication industry is less than 4 ms, which is less than 4 ms. This is, once the city power supply is interrupted, the UPS battery must be The current required to output the load in less than 4MS time.

Some failures of the battery can meet the requirements of the end voltage and capacity, but cannot reach the requirements of the large current less than 4ms, and it is also unqualified battery. The Characteristics of the UPS battery instantaneous output large current can only be tested in the maintenance of the mains, and there is a certain risk in the event of battery performance. The UPS battery instant can not output a sufficient large current, generally because the battery is not discharged for a long time, often discharged or periodically discharged UPS batteries substantially does not exist.

The needle-related UPS power supply is less than 4 ms, which is less than 4 ms, which is less than 4 ms, and our company tests 600 kW diesel generator set in a branch of Shanghai Unicom. The capacity of the diesel generator set is also For 420kw, in order to make the diesel generator set to power the equipment, they widen the diesel generator set control part to 7ms. When the electric stop, the diesel generator set, the UPS is charged when charging the process, in order not Let the battery discharge, do not cause communication interruption, they can only turn off some loads.

3, discriminate the capacity of the UPS battery, the method of conventional discriminating the UPS battery capacity is the same as the method of discriminating the general battery, and the set of battery packs is detached from the communication power system and the upper resistance wire, and the constant current is discharged in one hour, three hours or ten hours. , Then calculate its capacity with the discharge time and current of a single unit battery that first reaches the discharge termination voltage.