Air Core Current Limitimg Reactor 1

[kingi]

The reactor is 12.9 kV; 600 amp; (13.4 MVA) X=5% I would like to obtain a typical X/R ratio, but could not find an answer anywhere. Could someone please help me.

Thank You

 

[pie314]

Kingi

In the IEEE standard C57.16 - 1996 Paragraph 10.2.2 it states that the standard multiplier K is 2.55. If you now look at the chart you will see that this value requires an R/X ratio of .07. of course this value will vary between manufacturers however if you are looking for a typical number this should suffice.

Note: This makes the X/R = 1/.07 = 14.28

 

[jack6238]

The X/R ratio of an air core reactor at this voltage, and 600 amp rating is about 60.Of course it can be higher.. Reference "A Practical Guide to Short-Circuit Calculations" by Conrad St. Pierre... chapter 5 pg 110 and page A-189.

Jack