This sounds like a classic case of voltage sag, made much worse by a lagging power factor. Although not an absolute cure-all, the first thing I would do is put a couple of kVAR of capacitive reactance in place. The chances are good that the power factor is well below power-industry standards at that site. Ideally, the steady-state power factor should be above 0.9 and the target is above 0.95. Adding some capacitors across the line will improve both the voltage regulation and the power factor. Ask the utility to have a power-quality engineer evaluate this site. The national standard is 120 VAC +/- 6 VAC. Anything outside this range should be reported to the utility as unacceptable.
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Metzger Sent: Tuesday, September 04, 2007 9:05 PM To: [email protected] Subject: Re: [Repeater-Builder] An interesting observation..... I went up to a radio site Sunday, and found the AC Voltage Averaging in the 90's, peaking as high as 103, and dipping down as low as 83 volts. My customers equipment was going into convulsion. By the way, it was only about 100 degrees outside. I thought it strange when I walked into the next room, and heard the frequency at which the cooling fans spin stepping up and down. Paul Metzger K6EH On Sep 4, 2007, at 20:00, Mike Morris wrote: > From an email I received.... > >> Yup, 105.4 F heat and line voltage of 104.1 VAC. And, >> on the next day, they made an 'adjustment' in the power >> and I had 102.3 VAC with my outdoor temp of 104.3. >> It is not good when your thermometer >> reads more than the AC voltmeter.
