User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0
Matthew.
Neither, actually.
The OP had a problem with his Variac and (3) NST main power supply
blowing 20 amp fuses on powerup. This was probably due to excessive
inrush current.
He thought that adding PFC caps might solve his problem. They probably
would not. Several alternatives for a resistive inrush current limiter
were suggested.
I suggested that he use a current transformer to measure the actual
current in his power line circuit, as his DVM was not rated sufficiently
to measure the current in the system.
Current transformers of the sort that I suggested do not have a high
enough frequency response to measure primary or secondary currents. You
need Pearson - type current transformers of high ratings to do that ($$$).
Dave
On 9/5/2015 2:19 AM, Matthew Sweeney wrote:
Can someone explain the purpose of these discussions on power factor? Are
we trying to read primary currents or how well the primary and secondary
are exchanging energy?