I spent some time researching power monitoring equipment for a commercial project earlier this year - a short list of the ones I found interesting follows:
http://www.powerlogic.com/index.cfm http://www.dentinstruments.com/ http://www.elkor.net/ http://www.veris.com/ http://www.accuenergy.com/ http://www.electroind.com/ http://www.electrex.it/eng/home.php Most of these are quite expensive at around $1,000 for a 3-phase monitor. Almost all of them have EIA485 ModBus outputs and could easily be linked to a BAS or microcontroller for alarming & logging. Electro Industries' Shark line is quite affordable (~$350-$550 depending on featureset) and some have Ethernet or WiFi options. On Apr 13, 2010, at 13:16 , Peter Parrish wrote: > I am joining this thread a little late, so I may have missed a bifurcation > into a related area. > > We have need for a DAS system that does the following: > > (1) Monitors inverter output, including some bigger commercial sized > inverters from Satcon and SMA (100 kW to 500 kW) > (2) Monitors utility input at service panel > (2) Monitors several loads (up to five) via the service panel > (3) Irradiance and temperature would be great but not absolutely necessary > (4) Some sort of alarm system that would trigger at a programmable kW > threshold for the utility input. > > What we are trying to do is monitor not only the PV system but the utility > demand and key loads as well, and to come up with a strategy for shedding > load to keep the demand below a certain amount. > > I know this is a fairly tough spec, and we may have to do some customization > and/or programming to get what we want. > > - Peter > > > Peter T. Parrish, Ph.D., President > California Solar Engineering, Inc. > 820 Cynthia Ave., Los Angeles, CA 90065 > CA Lic. 854779, NABCEP Cert. 031806-26 > [email protected] > Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
