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At present, in 110 kV and 35 kV middle and low voltage substations, the equipment equipped with batteries is mainly dc screen and communication device. This paper discusses the service life of dc battery. 1 The operation requirement of the
There are two types of batteries: lead-acid batteries and maintenance-free batteries. Lead-acid battery is composed of positive and negative plate, separator, shell, electrolyte and connecting pile, etc. The chemical reaction of discharge de
During the charging and discharging process of lead-acid batteries, water is usually decomposed to produce a large amount of hydrogen and nitrogen gas. If the gas does not escape in time, the spark will cause the battery to explode. There a
Now maintenance-free battery range has been very common, nursing should pay attention to the following points: (1)Keep the external battery clean and dry, positive and negative pole pile and cable connector in good contact. If the battery i
There are several classifications for lead-acid batteries： （1）According to the battery plate structure classification: formed type, paste type and tube type battery; （2）According to the battery cover and structure classification: o
