don93s
Member
Offline
Gender: 
View
Posts
View Gallery
|
| I don't know if it does this every night because tonight, for example, nothing changed (stayed at 123v). However, quite often while I sit at my computer, the lights will suddenly change in brightness and I can almost hear an audible 'click'. I will look at the computer clock and it will say 12:01am. Recently, I did have my Fluke RMS meter ready and it went from 125v to 120v in that instant. Must be an automatic voltage adjustment from the power company for night time demand. Just wondered if anyone else noted something similar.
|
|
|
|
Logged
|
|
Solanaceae
Member
Offline
Gender:
View
Posts
View Gallery
All photos are brought to you by Bubby industries.
   
|
| I never heard of that, at least here. A few consecutive mornings last December I heard a buzz followed by a slight dimming of lights. I didn't have a meter so I couldn't measure.
|
|
|
|
Logged
|
Me💡Irl
My LG Gallery
My GoL Gallery
|
Ash
Member
Offline
View
Posts
View Gallery
|
| Substation transformer changing taps depending on load..
Have not noticed anthing like that here. It moves around 235V..240V through the day and thats it
|
|
|
|
Logged
|
|
dor123
Member
Offline
Gender:
View
Posts
View Gallery
Other loves are printers/scanners/copiers, A/Cs
|
| Sometimes my UPS make a ticking noise, and its voltage display, changes from 215-220V to 238-241V and the opposite.
|
|
|
|
Logged
|
I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.
I only working with the international date format (dd.mm.yyyy).
I lives in Israel, which is a 220-240V, 50hz country.
|
funkybulb
Member
Offline
Gender:
View
Posts
View Gallery
|
| Here in the winter time when. People fired up there 10 15! KW. Central heat in south. Texas, the the electric
Goes all over the place. Nothing stays contant
It will bounce around. 112 under severe loads
Up to 127 volts. Randomly. Though out night
When All power plants get nearly. Maxed to
It limits.
|
|
|
|
Logged
|
No LED gadgets, spins too slowly. Gotta love preheat and MV. let the lights keep my meter spinning.
|
ace100w120v
Member
Offline
Gender:
View
Posts
View Gallery
|
| Interesting! It might be something switching at a substation, something else in your house turning on (Do you have electric heat of any kind on a time-programmed thermostat or something like that? Maybe one of your neighbors on the same transformer does).
Or maybe the power company sends pules along the mains for stuff like turning off A/C for a few minutes at peak demand times, etc...I've heard of this kind of thing being done in other countries with 220v/230v/240v/50Hz mains).
FunkyBulb, I can imagine!
|
|
|
|
Logged
|
|
hannahs lights
Member
Offline
Gender: 
View
Posts
View Gallery
|
| Every evening around ten past six our voltage dips down to about 243 volts stays that way for a few minutes then goes back to around 248 volts in the mornings its around 255 volts and in the afternoons when everyone's cooking and the local kids are watching TV it goes down obviously here in the UK with our cold dark winters its more pronounced than somewhere with a decent climate
|
|
|
|
Logged
|
|
RCM442
Administrator
Member
Offline
Gender:
View
Posts
View Gallery
|
| Every morning, around here, my lights will sort of pulse, at a few second interval. Every morning at the same time, affecting the LEDs in my bedroom AND the incandescents/halogens elsewhere in the house, it's too quick for my cheapo meter to pick up though
|
|
|
|
Logged
|
LEDs need to stop taking over everything
Administrator #4
Need help with something on the site? Let me know!
|
Mercurylamps
Member
Offline
Gender:
View
Posts
View Gallery
240V 50Hz
|
Or maybe the power company sends pules along the mains for stuff like turning off A/C for a few minutes at peak demand times, etc...I've heard of this kind of thing being done in other countries with 220v/230v/240v/50Hz mains). We get this system here. The power company sends 1050Hz frequency morse-code like pulses along the power lines that control relays for off peak systems, street lighting etc. These 1050Hz frequencies can cause interference in many devices as well like ceiling fans giving off a morse-code style humming. It's known as the 'Zellweger ripple system' by the company Zellweger Uster. |
|
|
|
Logged
|
|
hannahs lights
Member
Offline
Gender:
View
Posts
View Gallery
|
| A couple of years ago every evening around 4:30pm we would get a pulsing effect on our supply it lasted for several minutes in the end I called the power company to have a whinge about it its never happened since
|
|
|
|
Logged
|
|
marcopete87
Member
Offline
Gender:
View
Posts
View Gallery
|
Every evening around ten past six our voltage dips down to about 243 volts stays that way for a few minutes then goes back to around 248 volts in the mornings its around 255 volts and in the afternoons when everyone's cooking and the local kids are watching TV it goes down obviously here in the UK with our cold dark winters its more pronounced than somewhere with a decent climate
https://en.wikipedia.org/wiki/Mains_electricity#Voltage_levels |
|
|
|
Logged
|
|
rapidstart
Member
Offline
Gender:
View
Posts
View Gallery
Mazda Torch Candle
|
We get this system here. The power company sends 1050Hz frequency morse-code like pulses along the power lines that control relays for off peak systems, street lighting etc. These 1050Hz frequencies can cause interference in many devices as well like ceiling fans giving off a morse-code style humming. It's known as the 'Zellweger ripple system' by the company Zellweger Uster.
Our off-peak hot water storage tank is controlled by this. The ripple pulses causes fluctuations to those cheap 3-stage touch lamps and to the newest dimmer switch. I have an APC brand UPS that would go ballistic when the ripple pulses came through. I had to stop using it as the constant clicking of its relay and alarm became annoying. The problem times seemed to be around 5pm and again from 10pm. |
|
|
|
Logged
|
Say 'O' for an Osram, think about tonight today (old advertising jingle)
|
Mercurylamps
Member
Offline
Gender:
View
Posts
View Gallery
240V 50Hz
|
Our off-peak hot water storage tank is controlled by this. The ripple pulses causes fluctuations to those cheap 3-stage touch lamps and to the newest dimmer switch. I have an APC brand UPS that would go ballistic when the ripple pulses came through. I had to stop using it as the constant clicking of its relay and alarm became annoying. The problem times seemed to be around 5pm and again from 10pm.
I remember when I was a kid, the house I grew up in had a electromechanical ripple switch that had a wheel that spins round when it received the signals. I could remember the clicking and humming noises from the meter box everytime the signal was being received.  I love falling asleep everynight to the ripple signals coming through my fan every 15-30 minutes.  |
|
|
|
Logged
|
|
Solanaceae
Member
Offline
Gender:
View
Posts
View Gallery
All photos are brought to you by Bubby industries.
|
| Mercurylamps: where do you live? This isn't a thing here In Illinois, USA.
|
|
|
|
Logged
|
Me💡Irl
My LG Gallery
My GoL Gallery
|
Mercurylamps
Member
Offline
Gender:
View
Posts
View Gallery
240V 50Hz
|
Mercurylamps: where do you live? This isn't a thing here In Illinois, USA.
I live in Australia. Here is a Wikipedia article on the subject we are talking about.  |
|
|
|
Logged
|
|
