RRaghunath
Electrical
- Aug 19, 2002
- 1,733
AREVA make MiCOM P120 relay can be used for REF protection of transformer windings. I have come across recently a calculation for Stability voltage, which shows the formula as:
Vs = 40 + 0.05xRst + 0.04x(If/N)x(Rct+2Rl)
This seems very different from the formula we normally use, Vs = (If/N)x(Rct+2Rl)
Any experience/explanation!
Thanks in anticipation.
Vs = 40 + 0.05xRst + 0.04x(If/N)x(Rct+2Rl)
This seems very different from the formula we normally use, Vs = (If/N)x(Rct+2Rl)
Any experience/explanation!
Thanks in anticipation.