You have to match frequency and phase too. The real low budget way for small generators was a light bulb, the bulb was connected between them and the more the mismatch, the brighter is was. When it went dark you threw the interconnect closed in a hurry before they drifted out of phase again. Joe Coquina
From: Martin DeYoung <[email protected]> Sent: Monday, November 22, 2021 2:43 PM To: Stus-List <[email protected]> Cc: Della Barba, Joe <[email protected]> Subject: Re: Stus-List Re: [EXTERNAL] Digital Panel Meter Back in the early 70’s the chief electrical engineer at our transformer design and manufacturing company related a story that detailed the disastrous results of a mismatch between the electrical grid and a small hydroelectric generator in upstate New York. IIRC it occurred between WWII and the Korean war, back when the frequencies were matched by hand. They had analog meters. As the first hand story was told to me, an inattentive tech connected the small hydro plant without precisely matching the frequency. The “small” generator (several tons in weight) was thrown off it’s mounts and out of the building in its attempt to sync with the grid. I bet there was a lot of paperwork after that screw up. Martin DeYoung Calypso 1971 C&C 43 Port Ludlow/Seattle
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