PT's fuse blown
PT's fuse blown
(OP)
Hello everybody,
We have found some PT's installed in 230 kV that apparently have no problem, however, their fuses have been blown.
I looked at their name plate data and they are no capacitive.
Based on your experiences, any clues about the possible reasson of this fault?
Best Regards
We have found some PT's installed in 230 kV that apparently have no problem, however, their fuses have been blown.
I looked at their name plate data and they are no capacitive.
Based on your experiences, any clues about the possible reasson of this fault?
Best Regards






RE: PT's fuse blown
There may have been a voltage transient which saturated the PTs resulting in overcurrent.
Loose or corroded fuse clips.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: PT's fuse blown
A mistake by someone doing some testing causing an inadvertent short?
Regards
Marmite
RE: PT's fuse blown
RE: PT's fuse blown
David Castor
www.cvoes.com
RE: PT's fuse blown
Regards
Marmite
RE: PT's fuse blown
I would carefully check the secondary circuits.
RE: PT's fuse blown
Secondary fuses are standard (or a MCB) located in a box as close to the PT as possible. The LV conductors between the PT and the box are unprotected, therefore as short as possible.
rasevskii
RE: PT's fuse blown