Hi Scott,
Thank you so much for your quick response. I was not sure if the VTs would saturate just like the CTs do because I have seen that in the IEC world they specify a lot of protection windings class 3P, which means 3% error.
Hello all,
I have a 138kV potential transformers with two metering secondary windings 0.3WXYZ. I am wondering if there would be a problem saturating the PT's if a connect the signals to the relays as well for overvoltage and undervoltage protection.
Thank you,
-Pablo
Hello all,
I am specifying a voltage and current transformer for metering purposes on a 138kV system operation voltage under ANSI standards. I thought of specifying a 0.3WXYZ (200VA Burden) for the voltage transformer and a 0.3B1.8 (45VA Burden) for the current transformer.
As you might...
Thanks for the quick answer David.
The thing is that the line is going to end at the new substation, where we are stepping down from 138kV to 34.5kV having a switchgear in the secondary of the transformers. In this switchgear is where we are going to add loads in the future.
Like I said I...
Hello all,
I am not really that familiar with distance relays since the type of work I do is not really transmission lines, but the project that I am working on we need to add a 1/2 km 138kV transmission line that is going to feed a new substation. Originally, I was thinking on protecting this...
Hey guys, I am new to the forum so this is my first post with a question.
I am working in an industrial project where we are designing the substation, we are receiving from the utility company 115kV and we are stepping down to 13.8kV with a 18/24/30MVA transformer to a medium voltage...
