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186-9497-0015
Digital Differential Relay protection transformers with at Least 10 Current Channels and 4 Voltage Channels
RET670 transformer differential protection relay
Numerical Differential protection relay for power transformer
balance earth fault protection
differential protection of star delta transformer
power transformer differential protection
restricted earth fault protection for transformer
Swiss made RET670 relay 
Transformer differential protection 
Restricted earth fault protection






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  18694970015

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Nanjing Zhuneng Electric Co., Ltd

Mobile number: 18694970015

WeChat: power1411913

Email: sales@njzndq.com

Address: Building 16, Liandong U Valley Industrial Park, No.24 XuefuRoad, Jiangbei New District, Nanjing, Jiangsu, China

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