I installed an Accuenergy AcuRev 2100 on one of my panels. Used CT's
based on the current of the breaker. You can SNMP it, so should be able
to do general billing off it. Can do 18 channels. Read every minute, or
30 seconds, and log those.
It's a 3 phase unit, and I was retrofitting it into a panel that I
didn't want to monitor every circuit in, so I ran into some issues where
I didn't have the CT hooked up to the right Phase for monitoring when
connecting it to the Accuenergy. The Current reading was right, but it
Didn't display the other data for that circuit right like KW and KVA.
Phase A CT connects to Inputs 1,4,7, Phase B on 2,5,8 etc
On 10/1/2022 4:48 PM, Chris Fabien wrote:
Forrest, Thanks for the suggestion on egauge, that looks like a nice
solution and reasonable cost.
Trying to do multiple actual utility meters presented some hurdles in
needing a PE to stamp a design, township zoning approval (several
months), and significant timing issues from the utility who is many
months behind on service installs and availability issues on the multi
gang meter banks. Plus it complicates having two large standby
generators to A/B power all the loads, I guess you need to use
seperate transfer switches for each customer then?
Thanks,
Chris
On Sat, Oct 1, 2022, 4:34 PM Forrest Christian (List Account)
<[email protected] <mailto:[email protected]>> wrote:
Many states require revenue grade metering if you're going to be
metering via the kwh. This can get expensive.
One option is to calculate what the maximum your customer can draw
is based on 80% of the breaker size. And charge based on that.
20A breaker, maximum continuous load of 16A, 16(amps) x 120(volts)
x 24(hours) x 30(days) / 1000(kilo) = 1,382.4kwh. At 10c per kwh,
you can specify $150/ month for this circuit, and specify a
maximum continuous load of 16A.
If you're only going to have 3 or 4 tenants, I'd put a meter pack
in (like they have on apartments) and use real meters. If you do
it right, the utility company will just handle the billing.
If you really do want to go the per circuit metering route, look
at egauge.
On Sat, Oct 1, 2022, 10:43 AM Chris Fabien <[email protected]
<mailto:[email protected]>> wrote:
We are remodeling our old office building into a datacenter
with 2 or 3 tenants and a 2500 sqft general retail space. I
want to be able to sub-meter the power on a per-circuit basis,
and ideally be able to assign a group of circuits to each
tenant they serve. I have seen some inexpensive solution using
small current transformers in the panel but they are targeted
at residential. The circuits needing to be metered will be
from 20 to 200A feeds. Any solutions out there like this?
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