In the past I'd used the APC SmartUPS discussed previously to handle voltage stability issues. Used the serial output as a datalogger to track the grid dips (as low as 90v on 115v mains). This was in the mid-90s; I'd expect there to be a number of other solutions today.
Scott On Tue, Sep 5, 2017 at 11:31 AM, Charlie T, K3ICH <pin...@erols.com> wrote: > I've bought some little Chicom plug-in Line Voltage monitors that are rated > to run from 80 to 300 VAC for about $5 each through eBay, free shipping/no > tax. > They are completely self-contained with the two prong standard US blade > plug > built-in. > The background illumination is blue LED and they're about 1/3 the size of a > pack of Lucky's. > The only problem I've found with them is that after about 5 years of 24/7 > use, the background illumination isn't as bright as a new one, but still > perfectly readable. > > 73, Charlie k3ICH > > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Rhodes > Sent: Tuesday, September 05, 2017 2:12 PM > To: Elecraft <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] Items you think you can depend on > > So what are people using to monitor their 120/240 mains? Just curious but > wondering if this is something I should be doing. > > Mike / W8DN > > On 9/4/2017 1:32 PM, Mel Farrer via Elecraft wrote: > > Funny you posted this. > > I monitor BOTH sides of the 110/220 VAC service and have alarms set to > trigger either line >125 or >250 VAC. Being in the country THINGS happen. > > Always expect the unusual. > > Mel, K6KBE > > > > > > From: David Robertson <kd1na...@gmail.com> > > To: Elecraft <elecraft@mailman.qth.net> > > Sent: Monday, September 4, 2017 9:39 AM > > Subject: [Elecraft] Items you think you can depend on > > > > Everyone, > > > > Over time we can grow complacent on many service items such as > > electrical power, water and other services over time. Well that can be > > concerning as many hidden changes can result in damage to your home and > equipment. > > > > Late late night I came in to my den and was closing down my ham > > station when I notice my fault light on my KPA500 linear was on. I > > powered it down and retired for the evening. This morning I powered up > > the linear (KPA500) and at once I got a fault light and had a high > > voltage alert. I powered down the linear and checked my input line > > voltage. It was 137 volts RMS! To be sure it wasn't my imagination I > > rechecked the voltage with a different meter with the same result. In > > checking the 220 volt outlet I measured 274 volts! My linear is set up > > for 220 volts operation and it was getting over > > 90 volts HV. > > > > I alerted the neighbors and cut the main breaker to the house. I then > > called the power company's service number and reported the problem. A > > short time later they called me back and reported that a regulator in > > the local sub station had "Stuck" and was reset. In rechecking my line > > voltage it was > > 118 volts on the low side and 236 volts on the high side. > > > > In the 12 years we have been at this qth we found that our town's > > locally run power company has been very reliable but this experience > > showed me that it is not a bad idea to check your line voltage every once > in a while. > > 73 > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message > delivered to pin...@erols.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to scott.sm...@gmail.com > -- Scott Small ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
