Seal lead-acid battery is widely applied on power system . The internal resistance of Valve Regulated Lead Acid battery or battery string must be increased with the time variable during the running. There is phenomenon of degenerative aging, The capacity of the battery is determined by the one in the worst condition, not the average value or rated value. When actual capacity of battery decreased below 90% of rated capacity , the battery is in the degenerating stage; When actual capacity of battery decreased below 80% of previous capacity, the battery is in the state of rapid decline. The decline stage is very short, the battery pack at that stage has a great potential accident.
Battery common fault , maintenance requirement and maintenance state.
Due to that storage battery during using is in the float charge state for a long time, it will occurs some phenomenons such as battery active substances off, battery electrolyte dry, plate deformation, grid corrosion and vulcanization, which results in battery capacity reduction or even failure. We usually find the problem that battery capacity is about 60% of its rated capacity . Those phenomenons are the most common fault of battery.
Generally , Service life of the battery should be more than 8 years, but many batteries occurs faults soon after they are put into use. Except that some of batteries in the manufacturing process are congenital defects, another main reason is the lack of necessary and scientific maintenance. If technicians can’t know the health status of backup UPS batteries in their own systems, which may cause some risks to the normal operation of UPS system.
There are relevant data shown that more than more than 90% of UPS system do not install monitoring equipment. The important component is battery pack . In the actual use process, a few users regularly check the battery capacity. In many cases, it is found that the discharge capacity of the battery can not meet the design requirements after the power failure, even some battery packs continue to work when batteries capacity is below 50% of rated capacity! There is a great risk.
In order to identify the performance state of batteries and the residual capacity of each battery, our products battery discharge charge monitor tester can solve your worries . If you have more requirements , we can offer the professional technical solutions.
Battery Monitoring Test System
Storage battery maintenance basic requirement: new batteries are put into use, it need to check the battery capacity for acceptance of project confirming whether battery capacity is consistent with rated capacity;
- After batteries put into use, it is required to keep a proper working environment temperature .
- Measure the terminal voltage of each battery periodically, when battery voltage differ is large, it is required to balance charge.
- Regularly proceed capacity test and deep discharge test , it can check the batteries performance and maintain the activation of batteries .
UPS Battery Maintenance
Storage batteries are the core of uninterruptible power supplier UPS system. If there is no batteries for UPS system , it is as CVCF (constant-voltage and constant-frequency) power supplier. UPS system can offer uninterruptible power supply by storage batteries.In the event of power failure in the power facilities, the inverter will directly transfer the chemical energy of the battery into AC electric energy ensure the running of the equipment .
Sealed lead-acid batteries widely used in small and medium-sized UPS power supplies, they are 1/4 to 1/2 of the total cost of UPS power supplies. Besides , more than 50% of UPS power failures are related to UPS batteries during the maintenance. UPS batteries fail caused by insufficient terminal voltage, insufficient capacity or transient discharge current unloading startup request.
UPS system in bank of China
UPS System with battery monitor
