Nominal AC Mains Supply Voltage 额定交流电源电压
Heat meters designed to operate from an ac mains supply shall be wired in accordance with wiring regulations applicable.
温度传感器由AC交流电源供应，配备的电线符合电线规章。
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。
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