Digital Electric Meter

[Npstewart]

Good afternoon,

I visited an existing site for a small renovation we are doing. I noticed there are two existing ground mounted transformers at the site (one small, one large) right next to each other. The service is a 800A 3 phase service. The arrangement looks like a high leg delta service so I called the POCO to confirm but the problem is that my POCO never calls me back and when they do its usually 3 days later. Is there anyway to tell from the meter? The meter says 240v above the 3 phases so I figured that may be a hint but then again that may just be the highest voltage allowed on that meter...Anyone know? My guess is probably not but I figured it couldnt hurt to ask. Either way I will confirm eventually.

Thanks!

 

[qcroanoke]

This is a PDF link to it.

https://www.itron.com/na/PublishedContent/100196SP-08 SENTINEL Multimeasurement Meter.pdf

I think< the number I could make out from your photo is ss4s1d.

Also from what I could see it shows 4W W/D which I take as 4 wire wye/delta 120-480 vac

 

[Rampage_Rick]

Generally speaking these Itron meters will indicate the line voltage on the LCD. If it says 240V then there's a good chance that's what you're working with. I'm not sure how it works with a high-leg though. Another possibility is that they're using PTs to drop the voltage (up here in Canada we have 600V service, but the Itron meters only go to 480V)

 

[texie]

Good afternoon,

I visited an existing site for a small renovation we are doing. I noticed there are two existing ground mounted transformers at the site (one small, one large) right next to each other. The service is a 800A 3 phase service. The arrangement looks like a high leg delta service so I called the POCO to confirm but the problem is that my POCO never calls me back and when they do its usually 3 days later. Is there anyway to tell from the meter? The meter says 240v above the 3 phases so I figured that may be a hint but then again that may just be the highest voltage allowed on that meter...Anyone know? My guess is probably not but I figured it couldnt hurt to ask. Either way I will confirm eventually.

Thanks!

One large and one small pad mount xformer would be a good indication of a 240/120 4 wire service. But 800 amp? That is pretty large for a POCO to do this. But then again, maybe the xformers are unrelated-hard to tell with pad mount at a glance.
Can't you just check the voltages to confirm?
You mention that the POCO is hard to communicate with. I find this very troubling and more and more the norm. They are becoming like the Federal Government and could care less about the customer or contractor. I'm lucky in that I regularly work with a very large investor owned POCO that does not have this attitude. I can call them and get an answer from someone in authority without delay.

 

[resistance]

Here is what the meter spec says in short: Voltage Input Rating

• Automatic voltage-sensing power supply,available in single-phase or three-phase
• Single-phase power supply operatesover a voltage input range of 120-480 V

 

[Npstewart]

I just got the POCO on the phone after calling them repeatedly and they confirmed it it a 240-3 delta service.

If I would have waited for them to call me back it would have taken over 3 days.

I am assuming that the large numbers indicate the peak demand kW? I always wondered that too.

 

[fmtjfw]

I just got the POCO on the phone after calling them repeatedly and they confirmed it it a 240-3 delta service.

If I would have waited for them to call me back it would have taken over 3 days.

I am assuming that the large numbers indicate the peak demand kW? I always wondered that too.

The large number displayed in your picture is running kWh -- the number of kilowatts Hours since the meter was installed (perhaps to be multiplied by the ratios of PTs and CTs).

A smaller number probably displayed with kVA is peak demand. It will contain a decimal part.

It's a class 200 meter so it is unlikely to be associated with PTs or CTs