electrofelon
Senior Member
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- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
reading voltage regulator
- Thread starter electrofelon
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That would be my guess
Correct. And from what I can see this one maxed out to 16 raise at some point.
in the control box is a switch to reset the drag hands
that looks like an old Allis unit(Siemens)
there are two knobs on either side of the clockface that limit the steps from 10% down to 5%.
looks like the one on the right needs to be adjusted to 8 1/4
in the control box is a switch to reset the drag hands
that looks like an old Allis unit(Siemens)
there are two knobs on either side of the clockface that limit the steps from 10% down to 5%.
looks like the one on the right needs to be adjusted to 8 1/4
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
Looks like some sort of upgrade might be in order soon if this thing went to the top. This is a 4800v line.
does it feed small wire for a long distance?
it generally works out to .75V per step on a 120V scale, so this one went up 8V
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electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
I got a picture of the controller dataplate but its too fuzzy to make out. Ill go back with a ladder sometime
. Wow .75V per step, I didnt realize it would be such a small increment.Im not sure what the wire size is, looks "normal". #2? This is the line that feeds me. Im about 3 miles way from that regulator. Regulator is 6.5 mile from substation, but line starts at 7.62/13.2 and is stepped down to 4800 at mile #5, 1.5 mi from regulator. A GC I work for is the very last customer on the line on one road, about 4.5 miles past me, but the line splits and goes up some other roads and I have never followed those out.
Does your POCO do CVR? (Conservation through voltage regulation).I got a picture of the controller dataplate but its too fuzzy to make out. Ill go back with a ladder sometime
Im not sure what the wire size is, looks "normal". #2? This is the line that feeds me. Im about 3 miles way from that regulator. Regulator is 6.5 mile from substation, but line starts at 7.62/13.2 and is stepped down to 4800 at mile #5, 1.5 mi from regulator. A GC I work for is the very last customer on the line on one road, about 4.5 miles past me, but the line splits and goes up some other roads and I have never followed those out.
we do that through SCADA software at any regulators we have comms with. Line regulators we do not have communication set up with at this time. It’s coming...
when the program is ran, the line regulators step up because there isn't a program telling them to stay low, and they “see” the low voltage, and raise to correct it.
I have limited the raise on some to let the CVR at the station drag the voltage down across the line regulators creating more savings.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
interesting. I was not aware that was a thing. I dont know for sure, but I would guess no for this POCO. at least in my area. what is a typical figure for the percentage that demand can be lowered for a sub by reducing voltage?
Got any numbers at all on the data plate? Normally there is a number somewhere like lower right side with data plate number. The data plates are stamped out, and when one is built they ask for the data plate part number to get the correct schematic and P2U2 voltages.
On our peaking demand in the winter, our system can see a 50G savings, PER EVENT. Yep, that’s right...
an event normally runs for three or four hours. Sometimes we can run them three or four times a week. More if it gets real cold and we are drawing more from peaking plants.
believe it or not, with CVR event and solar on a circuit, our station trend can get real flat.
ill see if I have a graph handy
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
This is the best I could do. I could do much better with a 6 foot ladder, its not that high.
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That’s a good pic, it told me everything I needed to know. What else you want to gain from a better picture?
are you having voltage issues?
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
No just curious. So is it like you though with .75 V per step @ 120? So that means it changes taps every 30V at 4800?
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
Very cool, thanks for that. I am surprised peak is so early at 7:30. IS that typical?
People getting up for work and school, cranking the heat up along with lights, hot water for showers, etc..
our winter CVR events run from 6-9 AM.
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Very fascinating. Since you can only estimate what the CVR savings is for each event, do you just use historical data to come with what the load would have been without CVR? Or is there something else? I'm curious how you know how effective it was for a given day.
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