ＩＣ卡智能电度表及电能预收费自动化管理系统广州华海电子仪器有限公司研制开发了ＩＣ卡智能电度表及电能预收费自动化管理系统，它采用国家优选型号的感应式电度表作为电能计量的一次元件，配用国际先进的单片计算机及外围元件，利用改进后的漏电保护断路器作为自动切断... IC card smart meter and pre-charge automatic management system Guangzhou Huahai Electronic Instrument Co., Ltd. has developed IC card smart meter and pre-charge energy management system, which uses the national preferred type of inductive meter as a measure of electricity A component, equipped with internationally advanced single-chip computer and peripheral components, the use of improved leakage protection circuit breaker as an automatic cut off ...