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Proper selection and operating maintenance of the batteries in the subway power supply system

ZHANG Kuan-fa(Operation Branch of Shenzhen Subway Co.,Ltd.,Shenzhen 518040,China)  
The batteries play an important role in the subway power supply system.They can provide standby power for various operations of equipments and emergency lighting to ensure safety and stability of the system.By analyzing the causes of battery failure,the strategy of proper selection and operating maintenance was found.
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