Freja application

Status
Not open for further replies.
I have an attachment with the drawing ?. Kindly do answer .
If the PT connections are isolated using FT switches and if the freja is connected to the Va and Vc of the voltage transducer,then what is the voltage I will have to inject to get an output as 1 mA?
1 question:: is it correct that we install a 150 V/0-1 mA transducer or do we have to install a 115 V/0 ? 1 mA transducer as per the fig. having a PT windings as 115KV/115V(PH-PH)?
question 2:: what is the voltage that I will have to inject from the freja to get 1mA -is it 115 or 86.60 (150/rt 3) or 66.4(115/ rt 3). kindly explain the answer that's been told.
Question 3:: what will be the value of phase voltage and line voltage?
 

jim dungar

Moderator
Staff member
Location
Wisconsin
Occupation
PE (Retired) - Power Systems
This sounds like it is a homework problem?

If you want to be able to detect an overvoltage, you need a transducer that has a range above your nominal voltage.
 
Status
Not open for further replies.
Top