There are many of these here (Greece, Crete, Iraklion Prefecture) at first I thought they were circuit breakers, but then saw one of them wired in delta, and that's defintely not a way to wire a circuit breaker!and of course circuit breakers don't need potential transformers, they need current transformers! I will post a link to a photo as long as I can take a photo of one of them! (they're only at rural areas!)
self-regulating line capacitor at 20 kV with potential transformer?
Apr 22, 2022
Last reply: πριν 3 χρόνια
2 Replies
I'm curious to see that! Please share with us. Good to see something real in these engineering newsgroups. They're totally empty or else it's spam. :(
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's not a self-regulated capacitor as I first thought, it's a sulfur hexafluoride (SF 6) circuit breaker and the potential transformer is supllying the auxilliary voltage! I suppose they installled them (there are LOTS of them)so as easily to disconnect a part of the line. before that theu had to open the circuit breaker all the way upstream to the
150/20 kV substation, open the disconnect switch, which would disconnect the line downstream, and then reclose the circuit breaker. closing again the disconnect switch would cause no problems. you can see here upstream a disconnect switch.
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