jan63
Electrical
- Aug 4, 2009
- 46
I am working in power station where the switchyard was built in 1977.
Due to expanding network the new fault level calculated over the next few years is 63 kA(old 30 kA).
We have started replacement of equipment like breakers,disconnect,lightning arrestors etc.
The question is do we need to replace the concrete foundations for these equipment.
The old one in my opinion(since Air blast circuit breakers were installed) will with stand the new equipment(SF6 breakers being much lighter).
Does fault levels have direct affect on foundations.
Due to expanding network the new fault level calculated over the next few years is 63 kA(old 30 kA).
We have started replacement of equipment like breakers,disconnect,lightning arrestors etc.
The question is do we need to replace the concrete foundations for these equipment.
The old one in my opinion(since Air blast circuit breakers were installed) will with stand the new equipment(SF6 breakers being much lighter).
Does fault levels have direct affect on foundations.