network analyzer

[Dave A]

imagine if all us contractors joined togeter and opened our own wholesaler bussiness and got the prices they did

A co-op...

Works in agriculture quite well, you know.

[bergie]

just an update and a question . andy ,i installed a zaptronix energy analyser,the same model as you suggested. its a nice meter,but the software is a bit complicated. i got everything working,but when i download the load profile it says"meter read error".everything else downloads.
it also seems to under read the kwh,s. i checked the c.t. connections and ct ratio which you program in to the meter.i first had the c.t.s upside down.it read everything,but the kwh,s didnt increment.i bought it direct from zaptronix in montague gardens ,but their technician is in joburg,so its lots of calls up and down.
any ideas before i kick some ass at zaptronix

[AndyD]

Ooh,it's a while since I've used meterview. When you got your download error was it whilst using a USB opto-coupler? It's important to set the meter to log all the perameters when you start a recording session and the CT's deffo need to be correctly orientated otherwise it will confuse it into thinking you're exporting power on some phases and consuming power on others. This would have a knock-on effect through all your load profiling. Also when entering the CT info you just give a ratio, not actual values.

I've attached an xls document you're welcome to use, myself and an acquaintance knocked it together to graph the various perameters you can record. I've left data in there from one of our logging sessions also using a Zaptronix meter but you can paste your own raw data from meterview into the 'Load Profile' page and it sorts the rest out for you. The converted data page is generated from the raw data, it just reformats it into figures that are graphable, for example the time/date stamps in the raw data are in ORBIS compliant format as per ISO metering requirements, the converted data splits the time and date info and puts it into a Windoze compliant format for graphing. I have a more complex version aswell but this one is a good intro and it will give you a foundation and save you some time if you want to develope your own spreadsheet.

Power Report.xls

Please note the attached document is supplied under the beerware licensing terms and is vootstoets for education/entertainment only, I'm not guaranteeing it's accuracy. I left it wide open so you can check all formulas etc.

[bergie]

hi andy thanks for the reply.that power report makes interesting viewing.i am using a usb opto coupler and the meter is set to read most of the parameters. some we dont need.i entered 160 as the ratio. 800:5 c.t.s. will go there again today and see what i can figure out.

[bergie]

i see theres a local company manufacturing a meter that connects to the internet. you can keep track of your usage. kwh,kva,pf,etc
you can log on to their site,but you have to pay a small subscription every month. more for industrial customers.

[AndyD]

i see theres a local company manufacturing a meter that connects to the internet. you can keep track of your usage. kwh,kva,pf,etc
you can log on to their site,but you have to pay a small subscription every month. more for industrial customers.

This is the core business of Zaptronics. Link

[murdock]

elster is sold by electromechnica...we had dealings with zaptronic...and decided to move to elster...the people from zaptronic dont seem to have a backup service...my money would still be on landis and gyr...when it comes to metering...more expensive but...you get what you pay for.

this could be the company refered to.

http://www.ekhwesienergy.co.za/