Activating disabled protections in Siprotec 7SJ62

Dear All,

I need to configure an existing Siprotec relay 7SJ62 for undervoltage protection. While configuring I found that in 'Device Configuration', Under / Overvoltage protection is disabled. How can I enable it? I have tried through DIGSI but not succeeded.

Regards,

Gaurav Tripathi

Hello,

How the voltage is measured? With three phase transformer or single phase transformer with phase to phase voltage.

Please read the attached sheet, (extracts from manual) for more information.

I finally succeeded in enabling the disabled protections in other way. I just uploaded program from another working similar siprotec relay and downloaded to required relay after hitting 'Initialize' button when prompted.

Now all required functions are enabled.

Thanks...