eemamedo
Member
- Location
- Moscow, Russi
I was looking at some manuals online and I was wondering what do we need Ik" value for? And when it comes to withstand rating of the equipment, do we use Ip value or Ik"? Thank you.
Ik" vs. Ip in short circuit current
- Thread starter eemamedo
- Start date
- Status
Julius Right
Senior Member
- Occupation
- Electrical Engineer Power Station Physical Design Retired
I agree with rian0201 :happyyes:.According to IEC 60909-0 ch.4.3 Peak short-circuit current ip, 4.3.1 Three-phase short-circuit 4.3.1.1 Short circuits in non-meshed networks, formula ( 54):
the contribution to the peak short-circuit current from each branch can be expressed by:
Ip=sqrt(2)*K *I"k where K=1.02 + 0.98*exp(-3R/X)
I”k= the initial symmetrical short-circuit current
R and X are the parameters of the system viewed from the short-circuit location.
the contribution to the peak short-circuit current from each branch can be expressed by:
Ip=sqrt(2)*K *I"k where K=1.02 + 0.98*exp(-3R/X)
I”k= the initial symmetrical short-circuit current
R and X are the parameters of the system viewed from the short-circuit location.
- Status