Effect of connected burden on CT performance
Effect of connected burden on CT performance
(OP)
We have specified CTs with 40VA rated burden for both metering as well as protection cores, whereas the connected load is less than 10VA.
My question is whether this will have any adverse effect on the connected relays / meters? Any precaution to be taken while specifying ISF / ALF?
Regards,
SKM
My question is whether this will have any adverse effect on the connected relays / meters? Any precaution to be taken while specifying ISF / ALF?
Regards,
SKM






RE: Effect of connected burden on CT performance
Not sure what this means: "Any precaution to be taken while specifying ISF / ALF?".
RE: Effect of connected burden on CT performance
ISF - instrument security factor.
ALF - accuracy limit factor.
Check the replies of scottf in Thread238-113320:
Protection - last paragraph of his first reply.
Metering - His reply to stevenal.