I've seen lots of discussion about the
harmonics and other issues from HID lamps (or
more properly, tehir power supplies).
When I was working at an ISP I noticed some very
headachey readings when looking at the supply
and neutrals for the racks, but we were well
below the current ratings so left things as is.
Anyway... I know just enough about this to realize
I don't know enough, so I figured I'd better ask
a couple of questions even if they sound foolish.
In my residential building complex we've got
about 1,000 apartments, and I doubt there's
enough usage of CFLs or HIDs or switching power
supplies to be a major issue.
However, we have a standalone muliti-story garage, which is
illuminated 24 hrs/day by about 35 kw of high pressure
sodium luminaires (with another 5 kw or so at night) getting
fed via 3 phase AC. There's perhaps one or two addiotional
kw of demand for some office equipment and (fluorescent)
lighting. And a short occassional kw when opening/closing
the garage doors.
This building is separately metered.
If I ask the utilty if the wave forms are screwing
up the meter readings, would they laugh me out
of the room? Is there any valid issue here?
Knowledge may be power, but communications is the key
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