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Differential relay / security / distance / relay - 1/3 x 19 - 2/1 x 19 in | 7SL87
The combined differential and distance protection 7SL87 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Due to its high flexibility, it is suitable as selective protection equipment for overhead lines and cables with single- and multiended infeeds of all lengths with up to 6 ends. Transformers and compensating coils in the protection zone are also possible. The device is delivered with the aforementioned number of analog and binary inputs and outputs. Apart from that, the device supports all SIPROTEC 5 system characteristics. It enables futureoriented system solutions with high investment security and low operating costs.