[Scan-DC] Dominion Virginia Power

[Albert LaFrance]

The designation "642R30" refers to a device on a primary line.  Primary
lines are high-voltage distribution lines, as opposed to secondary lines
which carry the lower voltages normally delivered to customer meters
(usually 120/240 for houses, or 120/208 or 277/480 three-phase for
commercial/industrial facilities).

In this case, "642" is the circuit number, "R" means "recloser" (a circuit
breaker which can automatically reset itself a programmed number of times,
after short delays, in an attempt to restore service after temporary shorts
or "faults" caused by tree limbs hitting the line, etc.), and "30" is just a
unique identifier for the device.  The designation is shown on the pole with
metal markers like house numbers, arranged vertically.

Other letters you might see in a designation are "S" for "switch", "D" for
"disconnect", and "X" for "sectionalizer". 

All of this is unique to Virginia Power - different utilities have their own
practices.

Albert
         

-----Original Message-----
From: scan-dc-bounces at mailman.qth.net
[mailto:scan-dc-bounces at mailman.qth.net] On Behalf Of Andrew Clegg
Sent: Monday, July 04, 2011 8:59 AM
To: Stephen Platt; Scan DC mail list
Subject: Re: [Scan-DC] Dominion Virginia Power

I recorded the Alexandria-Arlington frequency (451.525) last night (I'm in 
Arlington). What I captured was only one legitimate transmission, with a 
unit reporting that "642R30 was clear of tree limbs and was OK to go hot." 
There was a periodic Morse code ID of KLC836, which is registered in the ULS

database to VEPCO with a Seminary Road (Alexandria) transmitter site. There 
was also a weaker signal on the same frequency that occasionally ID'd as 
KJE520, which also comes back to VEPCO, in Haynesville VA (?), but not 
licensed for that frequency. My receiver does not have tone capability, so I

don't know if the two signals were using different squelch tones.

Given the storms last night, I would have expected more activity, but it 
seems that VEPCO (Dominion) is still using the frequency in 
Alexandria/Arlington, at least a little bit. I'll keep recording over the 
next couple of days to see what I get.

Happy 4th to all.

Andy

--------------------------------------------------
From: "Stephen Platt" <sdplatt at cox.net>
Sent: Sunday, July 03, 2011 7:24 PM
To: "Scan DC mail list" <scan-dc at mailman.qth.net>
Subject: [Scan-DC] Dominion Virginia Power

> Has there been any changes in freqs in the Northern Division? Here's my 
> list:
>
>      451.100 Warrenton District
>      451.225 Woodbridge District
>      451.275 Fredericksburg District
>      451.375 Herndon District
>      451.425 System Operator
>      451.475 Division Operator
>      451.525 Alexandria-Arlington District
>      451.575 Springfield District
>      451.625 Fairfax District
>      451.675 Leesburg District
>
>
> Another scannist on RadioReference says he isn't recieving anything and 
> that he was told they are using a new system (unmonitorable) in Fairfax 
> and Loudon Counties. If that's true, then it would stand to reason the 
> entire division has changed over. If so, it has me wondering if the 
> eastern and central divisions have followed suit.
>
>
>
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