Hi there,

Fistly, I have 7SD522 SIPROTEC relay and I want to change the reted current from 1A to 5A.

Thus, and as per the relay technical manual, I changed the jumpers in C-I/O-2 module to be 5A.

After that the relay ERROR LED lit continusely.

So could you please help me in this regard and upgrading the MLFB.

Your support shall be highly appreciated.

Best wishes,

Mohammad

Hi

I have done it before.

Change in setting relay : Power system data 1A to 5 A, error will gone.

Brgds.

Thanks for the valuable reply.

I tried the same and the Relay is working properly now.

The only remaining thing is that the MLFB is not matching phisically with hardware.

i.e. rated current now is 5A , but MLFB refers to 1A.

My question now is : can we upgrade/change MLFB to be 5A.

Thanks in advance