The power supply of the system is provided by the batteries being measured and the standby batteries, solving the problem associated with AC mains turning off during battery discharging.
该装置不需外接电源，而是利用被测电池加备用电池提供系统电源，解决了由于放电阶段停电而引起的问题。
2
This makes sure the battery will automatically supply power to the standby buses if the ac buses have no power.
这会确保如果交流汇流条没有电的情况下电瓶会自动向备用汇流条供电。
3
Standby power supply to ensure that the power supply when the door is not working properly, you should configure the standby power supply.