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What are the two devices under the capacitors?
2

What are the two devices under the capacitors?

What are the two devices under the capacitors?

(OP)
Thanks.

RE: What are the two devices under the capacitors?

Lineman beer refrigerators.

Due to the visible wiring my guess is just more caps.

Keith Cress
kcress - http://www.flaminsystems.com

RE: What are the two devices under the capacitors?

Probably VTs for voltage control of the capacitors. Sort of weird looking VTs, though.

RE: What are the two devices under the capacitors?

(OP)
Jghrist,

There's no control cabinet below and no switches above. It's a fixed bank.

itsmoked,

Series capacitors on two phases only seems unlikely. It would be unbalanced.

RE: What are the two devices under the capacitors?

Yeah, I was having a bit of trouble with that too.

Where is this? Town?

Keith Cress
kcress - http://www.flaminsystems.com

RE: What are the two devices under the capacitors?

They kind of look like capacitors. I wondered if there is a 3rd one behind the pole, but at the picture angle it just doesn't seem likely without being partly visible.

If the wires went to them first then I'd guess reactors.

I'd have also guessed PT's, but there doesn't appear to be any secondary connection points which rules that out. No real reason for them either.

I do like how the fuses are on one side and the caps are on the other side so the wires have to go around the pole.

RE: What are the two devices under the capacitors?

Just a guess, but in some places they tried distribution power line carrier (PLC) for several reasons over the years.
The problem is if they used distribution capacitors that would short the PLC signal to ground, so a filter would be needed to keep that from happening.

As I said, just a guess.

RE: What are the two devices under the capacitors?

(OP)
The screenshot is from Street View, and I can assure you I looked at all sides and there is no third device. I don't think I'll mention the town. This one is east of town, another similar installation is south of town. Wouldn't reactors or filters be installed in groups of three on a three phase grounded wye cap bank? I suppose they could be series connected between wye point and ground.

RE: What are the two devices under the capacitors?

(OP)
The zoom level I used didn't capture the telco line below. Series connected harmonic suppression reactors to prevent telephone noise? See Link page 29.

RE: What are the two devices under the capacitors?

From that picture, I can tell it's a Y capacitor bank, but I can't tell if or how it's grounded or how the conductors on the lower boxes are connected. They could be reactors in series with the ground connection.

RE: What are the two devices under the capacitors?

stevenal,

You're right. I'll have to go along with Lineman beer refrigerators.

RE: What are the two devices under the capacitors?

Do you have a screenshot from a different angle that shows whether the wye point is directly earthed? Or perhaps it attaches to the small bushings on the unknown devices?

RE: What are the two devices under the capacitors?

(OP)
bacon4life,

That's the best view I could get. The cap bushings on the front connect to the cutouts, so the boxes must connect to the neutral side.

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