Anyone else in Raleigh having funky shit going on with the electricity?

10/23/2009 3:03:26 PM

WONKY SHIT IMMINENT

10/23/2009 3:03:56 PM

gonna be a brownout off kaplan when i get off work

10/23/2009 3:06:03 PM

I think SE Raleigh is experiencing a brownout.

10/23/2009 3:06:35 PM

HAHAHA TWW is going global

The disease is spreading!

10/23/2009 3:14:35 PM

power was out at home some point today (I live a little bit SE of the 70/401 split)

10/23/2009 3:15:23 PM

was happening off of Jones Franklin around 20 minutes ago. Seems to have stopped now though.

10/23/2009 3:25:39 PM

i'm not experiencing any paranormal activity

I'm AstralAdvent and i approved this message.

10/23/2009 3:56:10 PM

today would be a weird day for a brownout considering i can't see why anyone would be using AC or heat, let alone everyone

10/23/2009 4:34:31 PM

I too have browneye... outs rather.

10/23/2009 4:44:08 PM

10/23/2009 5:04:53 PM

gonna be a brownout off kaplan when i get off work

10/23/2009 7:26:57 PM

I think this was a brownout too

10/23/2009 7:36:09 PM

Do brown outs in my pants count?
/doodoo brown

10/23/2009 9:42:03 PM

Quote :

"HAHAHA TWW is going global The disease is spreading!"

TWW HAS BECOME SELF AWARE

10/23/2009 9:46:00 PM

OH SHIT! internal brown error

10/23/2009 9:50:22 PM

^ don't you mean external brown error?

10/23/2009 9:51:18 PM

Its been happening at my house for a few minutes now

10/30/2009 6:01:22 PM

yeah, power flickered here off gorman a few times too

10/30/2009 6:06:00 PM

same shit @ UWoods

10/30/2009 6:17:55 PM

what NRR said

10/30/2009 6:20:05 PM

yeah UWoods was freaking out for a bit there. All is calm now though.

10/30/2009 6:21:11 PM

yep, i thought it was my fault for running the laundry, dish washer, wii, ps3, hdtv, and 3 computers. in my defense, our breakers are very sensitive and have done that in the past.

good thing i went around the house and unplugged everything i wasnt using like a responsible person should have done in the first place

10/30/2009 6:21:12 PM

My clock is still set, and has no battery in it.

10/30/2009 6:24:23 PM

well not everything turns off, thats why its just funky brownouts...i think only my lights flickered and the tv and xbox went off but everything else stayed on

10/30/2009 6:26:55 PM

TV and digital cable box stayed on here, lights flickered. I haven't checked my desktop yet

[Edited on October 30, 2009 at 6:29 PM. Reason : FUCK, wasted my 300th post. THIS IS SPARTA]

10/30/2009 6:28:15 PM

Flickered here... I'm glad I saw this, I thought it was just my ceiling bulb.

10/30/2009 6:31:45 PM

Quote :

"well not everything turns off, thats why its just funky brownouts...i think only my lights flickered and the tv and xbox went off but everything else stayed on"

sound like a phase is dropping out

10/30/2009 6:33:26 PM

Probably not, most people have single phase power. Digital devices usually turn off/reset during power loss while lights, machines, and others will stall for a short period.

10/30/2009 6:34:56 PM

i realize that household 240 is two sides of single phase 120 on a 180 degree sine of a single transformer

i am talking about the 13.8kV feeder, one of the legs is dropping out and fucking up the load on the others

10/30/2009 6:37:50 PM

I'm not sure how that would happen...

10/30/2009 6:38:33 PM

sigh, i have to explain these things enough at work when we have issues with the load shedding system for the mill, i don't get paid to explain stuff here

10/30/2009 6:40:12 PM

Please enlighten us, oh 69.

10/30/2009 6:43:44 PM

don't indulge the idiots

10/30/2009 6:44:15 PM

Electrical equipment; especially motors and their controllers; will not operate reliably on unbalanced voltages in a 3-phase system. Generally, the difference between the highest and the lowest voltages should not exceed 4% of the lowest voltage. Greater imbalances may cause overheating of components; especially motors; and intermittent shutdown of motor controllers. Motors operated on unbalanced voltages will overheat, and many overload relays can't sense the overheating. In addition, many solid-state motor controllers and inverters include components that are especially sensitive to voltage imbalances.

How much imbalance is too much? Let's look at an example. Suppose the lowest voltage on a 3-phase circuit is 230V, while another phase is 235V, and the third phase is 240V. Is this a significant voltage imbalance? Let's use the 4% rule to see.

Four percent of the lowest voltage (230V) is 9.2V (230V24%49.2V). The difference between the highest voltage (240V) and the lowest voltage (230V) is 10V. Therefore, these voltages have too great an imbalance. Why? Because the 10V difference is greater than four percent of the lowest voltage (9.2V).

You can use a more precise procedure for calculating voltage imbalance. The first step is to calculate the average voltage by adding all three phases and dividing by 3. In our example, the average is 235V: You add the voltages to get your total. 230V`235V`240V 4705V. Then you divide by the number of phases. 705V / 34235V.

Next, add up the absolute differences between each phase voltage and the average voltage. In this case, the difference between the average voltage and 230V is 5V. The difference between the average and itself is 0V; and the difference between the average and 240V is 5V. Adding up the differences, we get 10V. And that 10V is what we call the total imbalance. Now this is a story all about how my life got twisted upside down and id like to take a minute just sit right there ill tell you how i became the prince of a town called Bel-Air In west Philadelphia born and raised on the playground my momma said most of my days chilling out, maxing and relaxing all cool and all shooting some b-ball outside of school when a couple of guys they were up to no good started making trouble in our neighborhood i got in one little fight and my mom got scared she said your moving in with your auntie and uncle in Bel-Air i whisted for a cab and when it came near the license plate said fresh and had dice in the mirror if anything i could say that this cab was rare but i thought nah, forget it yo home to bel-air! i-pulled- up tp a house about seven or eight i yelled to the cabbie yo home, smell you later looked at my kingdom i was finally thereto sit on my throne as the prince of bel-air. Now divide the total imbalance in half to get an adjusted imbalance. Half of 10V is 5V. Finally, divide the adjusted imbalance into the average voltage to get a percentage imbalance. In this case, 5V / 235V40.021. That is 2.1% imbalance.

Reliable, long-term operation of most electrical equipment requires a voltage imbalance of less than two percent; which means your system has too much imbalance.

If you find voltage imbalances in your facility, the first place to look is not the power company. Instead, look for electrical distribution systems in which one leg of a 3-phase supply powers both single-phase and 3-phase loads. You may find single phase loads not evenly balanced across the phases. Or, look for in-line reactors installed to correct imbalances. These reactors usually have taps for adjustment, and somebody may have adjusted them. Or, the imbalance they originally corrected may have shifted over time. Circuits with tapped reactors rarely stay in balance indefinitely.

10/30/2009 7:05:17 PM

bel-air

10/30/2009 7:06:20 PM

rickroll

10/30/2009 7:07:48 PM

brownout

10/30/2009 7:10:19 PM

http://ecmweb.com/mag/electric_basics_voltage_imbalance/

Please try again.

10/30/2009 7:21:23 PM

lawlz

10/30/2009 7:22:16 PM

i just took the browns to the super bowl. afterwards i needed to leave the fan running for a bit

10/30/2009 7:25:38 PM

failure to cite your source

-10

10/30/2009 7:38:24 PM