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频率继电器频率监视器频率控制器​​频率保护器​专业生产厂家频率监控范围在42~68Hz范围内可以灵活设置,分辨率高达0.2Hz​产品采用32位ARM处理器作为主控芯片性能稳定可靠_上海讯琅电气有限公司

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>  Time relays

>  Phase sequence/absence relays 

>  Three-phase monitoring relays

>  Two-phase monitoring relays  

>  Single-phase monitoring relays

>  Current monitoring relays

>  Frequency monitoring relay

>  Vol./Cur./Freq. all-in-one

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Tel: (+86) 21-51113137

Mobile: (+86) 18616396303

E-mail: sales@sieland-electric.com

Address:  933 West Zhongshan Road Room 517, Shanghai, China


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