SIPROTEC 7SJ64
The SIPROTEC 4 7SJ64 has two uses – as a protective control and monitoring relay for distribution feeders and transmission lines of any voltage in networks that are earthed (grounded), low-resistance earthed, unearthed, or of a compensated neutral point structure. It is suited for networks that are radial or looped, and for lines with single or multi-terminal feeds.
It is also equipped with a synchronization function which provides two operation modes – synchronization check and synchronous/asynchronous switching.
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- Features “flexible protection functions”
- Up to 20 protection functions can be added if required (e.g. rate-of-frequency-change protection, reverse power protection)
- Easy-to-use local control and automatic functions
- Integrated programmable logic (CFC) allows users to implement their own functions (e.g. for the automation of switchgear – interlocking)
- Extended Central Processing Unit (CPU) power
- Enables users to generate user-defined messages
- Flexible communication interfaces are open for modern communication architectures with control systems